Magnesium Containing Patents (Class 420/532)
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Publication number: 20090068056Abstract: The incorporation of calcium and at least one member selected from the group consisting of vanadium and scandium into an aluminum lithium alloy containing: lithium, copper, magnesium, zirconium, beryllium, titanium, nickel, manganese, gallium, zinc, and sodium provides an aluminum lithium alloy that: 1) exhibits improved ductility; 2) exhibits improved processability resulting in the capability to obtain higher yields of semi-finished products; 3) provides the ability to fabricate thin sheets, thin walled sections and forgings, all while preserving the inherent strength and operating characteristics of such alloys when applied to semi-finished products and parts thereof demanded by structural applications in these fields.Type: ApplicationFiled: March 7, 2007Publication date: March 12, 2009Inventors: Valeriy I. Popov, Boris V. Ovsyannikov, Victor M. Zamyatin
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Publication number: 20090053098Abstract: An extruded product includes a 7000-series aluminum alloy, the 7000-series aluminum alloy having an excess Mg content or an excess Zn content of less than 0.5 mass % with respect to a stoichiometric composition shown by MgZn2.Type: ApplicationFiled: October 20, 2008Publication date: February 26, 2009Applicant: AISIN KEIKINZOKU CO., LTD.Inventors: Tomoo YOSHIDA, Arata YOSHIDA, Shinji MAKINO
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Publication number: 20090028746Abstract: A series of inventions leading to the production of specific aluminum alloys (especially aluminum beverage can sheet product) through novel approach of introducing, selectively partitioning and managing alloying elements. This invention also enables manufacturing practices to enhance the performance characteristics of aluminum alloys produced. The selected elements can be derived from carbon anodes made from calcined petroleum coke with high metallic contents (such as nickel and vanadium). Alloying elements can also be introduced and managed from other raw material such as alumina and bath constituents added during aluminum smelting process. Additionally, cell operating parameters, such as cell temperature, off gas flow rate, aluminum tapping rate and impurity partition characteristics can also be manipulated to produce low cost aluminum alloys and facilitate utilization of high metallic content calcined petroleum coke.Type: ApplicationFiled: July 21, 2008Publication date: January 29, 2009Inventors: Gyan Jha, Frank R. Cannova, Subodh K. Das, Barry A. Sadler
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Publication number: 20090010798Abstract: An aluminum-copper-magnesium alloy having ancillary additions of lithium. The alloy composition includes from about 3 to about 5 weight percent Cu, from about 0.5 to about 2 weight percent Mg, and from about 0.01 to about 0.9 weight percent Li. The combined amount of Cu and Mg is maintained below a solubility limit of the aluminum alloy. The alloys possess improved combinations of fracture toughness and strength, and also exhibit good fatigue crack growth resistance.Type: ApplicationFiled: September 16, 2008Publication date: January 8, 2009Applicant: Alcoa Inc.Inventors: Roberto J. Rioja, Gary H. Bray, Paul E. Magnusen
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Publication number: 20080318081Abstract: The invention relates to a malleable, high mechanical strength aluminum alloy of the AlMgSi type which can be anodized in a decorative manner, to a semifinished product produced from said alloy, in the shape of strips, sheets or extruded profiles, and to a structural component produced from the above semifinished products, especially a reshaped component that has been anodized in a decorative manner. The invention also relates to a method for producing an aluminum alloy component of the above type. Said aluminum alloy has good malleability, achieved by weight percentages of strontium in the alloy and defined weight ratios of silicon to magnesium and iron to strontium.Type: ApplicationFiled: April 30, 2005Publication date: December 25, 2008Inventor: Reiner Steins
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Publication number: 20080308196Abstract: The present invention discloses a high strength and high toughness aluminum alloy for a bumper beam and a method for manufacturing the same. The method includes: casting into a billet an aluminum alloy which comprises aluminum as a principal element, silicon (Si) of 0.1 wt. % or less, ferrum (Fe) of 0.2 wt. % or less, copper of 0.45 wt. % to 0.60 wt. %, manganese (Mn) of 0.1 wt. % to 0.20 wt. %, magnesium (Mg) of 1.3 wt. % to 1.5 wt. %, chromium (Cr) of 0.1 wt. % or less, zinc of 4.5 wt. % to 5.1 wt. %, titanium (Ti) of 0.04 wt. % or less, zirconium (Zr) of 0.08 wt. % to 0.12 wt. %, and inevitable impurities of 0.15 wt. % or less; extruding the billet into a predetermined form to form an extrusion; performing a solid-solutionization process to quench the extrusion; subjecting the extrusion to an artificial age-hardening which is performed at a temperature of about 120° C. for 24 hours; and subjecting the extrusion an over age-hardening which is performed at a temperature of about 170° C. to 185° C.Type: ApplicationFiled: October 25, 2007Publication date: December 18, 2008Applicant: Hyundai Motor CompanyInventor: Yoo Dong Chung
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Publication number: 20080305000Abstract: Al—Mg—Ag wrought products and methods of making such products useful in aircraft applications. The Al—Mg—Ag wrought products have improved strength when compared to traditional AA5XXX alloys. The alloys may comprise from about 3.5 to about 10 weight percent Mg, from about 0.05 to about 0.5 weight percent Ag, from about 0.01 to about 1.0 weight percent Mn, from about 0.01 to about 0.15 weight percent Zr, and the remainder Al and incidental impurities. In addition, from about 0.05 to about 0.4 weight percent Sc may be added to further improve the strength characteristics.Type: ApplicationFiled: May 12, 2008Publication date: December 11, 2008Inventors: Iulian Gheorghe, Victor B. Dangerfield
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Publication number: 20080299000Abstract: An aluminum wrought alloy product having improved strength, fracture toughness, and excellent exfoliation corrosion resistance, the aluminum base alloy comprised of 1.6 to 2.5 wt. % Mg, 0.01 to 0.9 wt. % Cu, 7.5 to 9.5 wt. % Zn, 0.1 to 1 wt. % Ag, 0.05 to 0.25 wt. % Zr, 0.05 to 0.8 wt. % Mn, max. 0.15 wt. % Si, max. 0.15 wt. % Fe, the remainder aluminum and incidental elements and impurities.Type: ApplicationFiled: October 9, 2007Publication date: December 4, 2008Inventors: Julian Gheorghe, Dean C. Malejan
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Publication number: 20080299001Abstract: The present invention relates to modified alloy compositions for reduced hot tear susceptibility, the aluminum alloy comprising from 0.01 to 0.025% by weight of Sr; and TiB2, measured by its boron content, from 0.001 to 0.005% by weight of B. The invention also relates to a method of preventing or eliminating hot tears in an aluminum alloy comprising the step of combining with aluminum: from 0.01 to 0.025% by weight of Sr; and TiB2, measured by its boron content, from 0.001 to 0.005% by weight of B.Type: ApplicationFiled: May 27, 2008Publication date: December 4, 2008Applicant: Alcan International LimitedInventors: Joseph Langlais, Alain Lemieux, Neivi Andrade
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Patent number: 7452429Abstract: The present invention relates to an extruded, rolled and/or forged product made of an aluminum alloy. Alloys of the present invention may comprise (by mass): Zn 6.7-7.5% Cu 2.0-2.8% Mg 1.6-2.2% at least one element selected from the group composed of: i Zr 0.08-0.20% Cr 0.05-0.25% Sc 0.01-0.50% Hf 0.05-0.20% and V 0.02-0.20% Fe+Si<0.20% other elements ?0.05 each and ?0.15 total, balance aluminum. Products of the present invention in some embodiments have an improved compromise between static mechanical strength and damage tolerance.Type: GrantFiled: June 23, 2004Date of Patent: November 18, 2008Assignee: Pechiney RhenaluInventors: Julien Boselli, Fabrice Heymes, Frank Eberl, Timothy Warner
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Publication number: 20080202066Abstract: The invention relates to a metal composite panel intended for construction, including at least two substantially parallel sheets (21) and (22) and, arranged between them, profiles (3) substantially parallel to each other and fastened to said sheets, characterised in that said profiles, numbering at least three, serve as separators making it possible to separate said sheets and are arranged so that the average distance between two adjacent profiles is not necessarily uniform but suited to the local conditions of use of said panel. In order to obtain a panel having an optimal compromise between weight and performance, light alloys and, in particular, aluminium are advantageous. The composite panels according to the invention are particularly useful as a floor of a rolling vehicle, as the floor, deck or ramp of a floating vehicle or as the floor of a flying vehicle.Type: ApplicationFiled: February 8, 2008Publication date: August 28, 2008Applicant: Alcan RhenaluInventors: Sylvie Arsene, Jerome Guillemenet, Celine Andrieu, Myriam Bouet-Griffon
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Publication number: 20080175747Abstract: Disclosed is an aluminum alloy sheet resistant to deterioration through natural aging. The aluminum alloy sheet is an Al—Mg—Si aluminum alloy sheet containing 0.35 to 1.0 percent by mass of magnesium; 0.5 to 1.5 percent by mass of silicon; 0.01 to 1.0 percent by mass of manganese; and 0.001 to 1.0 percent by mass of copper, with the remainder being aluminum and inevitable impurities, in which the amount of dissolved silicon is 0.55 to 0.80 percent by mass, the amount of dissolved magnesium is 0.35 to 0.60 percent by mass, and the ratio of the former to the latter is 1.1 to 2. The aluminum alloy sheet may further contain 0.005 to 0.2 percent by mass of titanium with or without 0.0001 to 0.05 percent by mass of boron.Type: ApplicationFiled: December 17, 2007Publication date: July 24, 2008Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)Inventors: Katsura Kajihara, Takeshi Kudo, Yasuhiro Aruga, Katsushi Matsumoto
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Publication number: 20080145266Abstract: A weldable aluminum alloy wrought product having high strength and improved resistance to intergranular corrosion, the alloy consisting essentially of, in weight percent: Si 0.2-1.3, Mg 0.4-1.5, Cu 0.1-1.1, Mn up to 0.7, Fe 0.02-0.3, Zn up to 0.9, Cr up to 0.25, Ti 0.06-0.19, Zr up to 0.2, Ag up to 0.5, and wherein 0.1<Ti+Cr<0.35, other elements and unavoidable impurities each <0.05, total <0.20, and the balance aluminum.Type: ApplicationFiled: June 13, 2007Publication date: June 19, 2008Applicant: Aleris Aluminum Koblenz GmbHInventors: Shangping Chen, Linzhong Zhuang, Nadia Telioui
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Publication number: 20080118393Abstract: The present invention provides a method for producing AlMn strip or sheet for making components by brazing, as well as the products obtained by said method. In particular this method is related to fin materials used in heat exchangers. The fins can be delivered with or without a cladding depending on application. Rolling slabs are produced from a melt which contains 0.3-1.5% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.3% each of elements from group IVb, Vb, or VIb elements, and unavoidable impurity elements, as well as aluminium as the remainder in which the rolling slabs prior to hot rolling are preheated at a preheating temperature of less than 550° C., preferably between 400 and 520° C., more preferably between 450 and 520° C. to control the number and size of dispersoid particles, and the preheated rolling slab is hot rolled into a hot strip. The strip is thereafter cold rolled into a strip with a total reduction of at least 90%, and the cold rolled strip is heat treated to obtain a 0.Type: ApplicationFiled: October 12, 2007Publication date: May 22, 2008Inventors: Anders Oskarsson, Hans-Erik Ekstrom, Richard Westergard, Stian Tangen
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Publication number: 20080107560Abstract: The invention relates to an aluminium alloy and anode made therefrom containing silicon, iron, copper, manganese, magnesium, chromium, zinc and titanium. The anode is used as a sacrificial anode in water vessels with non-metallic hulls.Type: ApplicationFiled: November 17, 2006Publication date: May 8, 2008Inventor: Brett Alexander Maddern
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Publication number: 20080060723Abstract: A castable aluminum alloy includes, in weight %, about 0.4% to about 2.5% Si, up to about 5% Cu, up to about 1% Mg, up to about 1% Fe, up to about 2% Mn, up to about 0.3% Ti, up to about 2.5% Ni, up to about 3% Zn, and the balance aluminum and provides reduced casting porosity and improved tensile strength and ductility in the cast and the heat treated condition.Type: ApplicationFiled: September 11, 2006Publication date: March 13, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Herbert W. Doty
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Publication number: 20080031768Abstract: An aluminum-silicon alloy composition is disclosed which meets the manufacturing and performance conditions for linerless cylinder engine block casting using low-cost casting processes such as silica-sand molds. The alloy of the invention comprises in weight percent: 13%-14% Si; 2.3%-2.7% Cu; 0.1%-0.4% Fe; 0.1%-0.45% Mn; 0.1%-0.30% Mg; 0.1%-0.6% Zn; 0.05%-0.11 % Ti; 0.4%-0.8% Ni; 0.01%-0.09% Sr; and and the rest being aluminum plus any remainders. This alloy has very good machining characteristics, giving a significantly improved surface finish in the cylinder bores. The manufacturing cost of engine blocks is reduced in about 40% as compared with using current commercial alloys of the prior art requiring iron liners. Any primary Si present is substantially uniformly dispersed, and copper does not segregate during solidification and cooling.Type: ApplicationFiled: August 4, 2006Publication date: February 7, 2008Inventors: Salvador Valtierra-Gallardo, Jose Talamantes-Silva, Andres Fernando Rodriguez-Jasso, Jose Alejandro Gonzalez-Villarreal
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Publication number: 20080029187Abstract: The invention provides a 2000 series aluminum alloy having enhanced damage tolerance, the alloy consisting essentially of about 3.0-4.0 wt % copper; about 0.4-1.1 wt % magnesium; up to about 0.8 wt % silver; up to about 1.0 wt % Zn; up to about 0.25 wt % Zr; up to about 0.9 wt % Mn; up to about 0.5 wt % Fe; and up to about 0.5 wt % Si, the balance substantially aluminum, incidental impurities and elements, said copper and magnesium present in a ratio of about 3.6-5 parts copper to about 1 part magnesium. The alloy is suitable for use in wrought or cast products including those used in aerospace applications, particularly sheet or plate structural members, extrusions and forgings, and provides an improved combination of strength and damage tolerance.Type: ApplicationFiled: September 7, 2005Publication date: February 7, 2008Inventors: Jen C. Lin, John M. Newman, Paul E. Magnusen, Gary H. Bray
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Patent number: 7135077Abstract: The object of the invention is a rolled, forged or extruded aluminum alloy product more than 12 mm thick, heat treated by solutionizing, quenching and artificial aging, with a microstructure characterized by the following parameters: the fraction of recrystallized grains measured between one-quarter thickness and mid-thickness of the final wrought product is smaller than 35% by volume; the characteristic intercept distance between recrystallized areas is greater than 250 ?m, preferably greater than 300 ?m and most preferably greater than 350 ?m.Type: GrantFiled: May 16, 2001Date of Patent: November 14, 2006Assignee: Pechiney RhenaluInventor: Timothy Warner
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Patent number: 7097719Abstract: An alloy product having improved fatigue failure resistance, comprising about, by weight, 7.6 to about 8.4% zinc, about 2.0 to about 2.6% copper, about 1.8 to about 2.3% magnesium, about 0.088 to about 0.25.% Zr, about 0.01 to about 0.09.% Fe, and about 0.01 to about 0.06 w % Si the balance substantially aluminum and incidental elements and impurities The alloy product, suitable for aerospace applications, exhibits improved fatigue failure resistance than its 7055 counterpart of similar size, shape, thickness and temper.Type: GrantFiled: November 17, 2003Date of Patent: August 29, 2006Assignee: Alcoa Inc.Inventors: Gary H. Bray, John Liu, Lynn Eugene Oswald
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Patent number: 7087125Abstract: An aluminum alloy for shaped castings, the alloy having the following composition ranges in weight percent: about 6.0–8.5% silicon, less than 0.4% magnesium, less than 0.1% cerium, less than 0.2% iron, copper in a range from about 0.1% to about 0.5% and/or zinc in a range from about 1% to about 4%, the alloy being particularly suited for T5 heat treatment.Type: GrantFiled: January 28, 2005Date of Patent: August 8, 2006Assignee: Alcoa Inc.Inventors: Jen C. Lin, Cagatay Yanar, Wenping Zhang, Pål S. Jacobsen, Geir Grasmo, Michael K. Brandt, Moustapha Mbaye, Martijn Vos, Michael V. Glazoff, Knut Pettesen, Svein Jorgensen, Terje Johnsen
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Patent number: 7060139Abstract: The present invention provides a high strength aluminum alloy composition and applications of the high strength aluminum alloy composition. The alloy composition exhibits high tensile strength at ambient temperatures and cryogenic temperatures. The alloy composition can exhibit high tensile strength while maintaining a high elongation in ambient temperatures and cryogenic temperatures.Type: GrantFiled: November 8, 2002Date of Patent: June 13, 2006Assignee: UES, Inc.Inventors: Oleg N. Senkov, Svetlana V. Senkova, Madan G. Mendiratta, Daniel B. Miracle, Yuly V. Milman, Dina V. Lotsko, Alexandr I. Sirko
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Patent number: 7045094Abstract: An aluminum-based material and method of manufacturing products from the aluminum-based material formed by a solid solution of zinc, magnesium and copper in aluminum with dispersed phase particles of aluminum, zinc, magnesium and copper essentially evenly distributed in the solution and particles of nickel aluminide being essentially evenly distributed in the matrix of the aluminum-based material that contains particles, essentially evenly distributed in the matrix, of at least one of the aluminides group such as chromium aluminide and zirconium aluminide, with a total content of 0.1–0.5% of the volume with the maximum amount of nickel aluminide particles being 3 ?m and the proportion between the maximum and minimum amount of nickel aluminide particles of no more than 2 and with the maximum amount of chromium aluminide and zirconium aluminide particles is 0.Type: GrantFiled: June 9, 2003Date of Patent: May 16, 2006Inventors: Andrei Anatolyevich Axenov, Nikolay Alexandrovich Belov, Vadim Semenovich Zolotorevskij
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Aluminum alloy products having improved property combinations and method for artificially aging same
Patent number: 6972110Abstract: Aluminum alloy products, such as plate, forgings and extrusions, suitable for use in making aerospace structural components like integral wing spars, ribs and webs, comprises about: 6 to 10 wt. % Zn; 1.2 to 1.9 wt. % Mg; 1.2 to 2.2 wt. % Cu, with Mg?(Cu+0.3); and 0.05 to 0.4 wt. % Zr, the balance Al, incidental elements and impurities. Preferably, the alloy contains about 6.9 to 8.5 wt. % Zn; 1.2 to 1.7 wt. % Mg; 1.3 to 2 wt. % Cu. This alloy provides improved combinations of strength and fracture toughness in thick gauges. When artificially aged per the three stage method of preferred embodiments, this alloy also achieves superior SCC performance, including under seacoast conditions.Type: GrantFiled: October 4, 2001Date of Patent: December 6, 2005Assignee: Alcoa Inc.Inventors: Dhruba J. Chakrabarti, John Liu, Jay H. Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist, Robert W. Westerlund -
Patent number: 6918970Abstract: A cast article from an aluminum alloy has improved mechanical properties at elevated temperatures. The cast article has the following composition in weight percent: Silicon 6.0-25.0, Copper 5.0-8.0, Iron 0.05-1.2, Magnesium 0.5-1.5, Nickel 0.05-0.9, Manganese 0.05-1.2, Titanium 0.05-1.2, Zirconium 0.05-1.2, Vanadium 0.05-1.2, Zinc 0.05-0.9, Strontium 0.001-0.1, Phosphorus 0.001-0.1, and the balance is Aluminum, wherein the silicon-to-magnesium ratio is 10-25, and the copper-to-magnesium ratio is 4-15. The aluminum alloy contains a simultaneous dispersion of three types of Al3X compound particles (X=Ti, V, Zr) having a L12 crystal structure, and their lattice parameters are coherent to the aluminum matrix lattice. A process for producing this cast article is also disclosed, as well as a metal matrix composite, which includes the aluminum alloy serving as a matrix containing up to about 60% by volume of a secondary filler material.Type: GrantFiled: April 10, 2002Date of Patent: July 19, 2005Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Jonathan A. Lee, Po-Shou Chen
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Patent number: 6863747Abstract: An aluminum sheet material for automobiles is herein disclosed, having an aluminum alloy composition: (i) comprising 3.5 to 5 wt % of Si, 0.3 to 1.5 wt % of Mg, 0.4 to 1.5 wt % of Zn, 0.4 to 1.5 wt % of Cu, 0.4 to 1.5 wt % of Fe, and 0.6 to 1 wt % of Mn, and one or more members selected from the group of 0.01 to 0.2 wt % of Cr, 0.01 to 0.2 wt % of Ti, 0.01 to 0.2 wt % of Zr, and 0.01 to 0.2 wt % of V, with the balance of aluminum and unavoidable impurities, or (ii) comprising between more than 2.6 wt % and 5 wt % of Si, 0.2 to 1.0 wt % of Mg, 0.2 to 1.5 wt % of Zn, 0.2 to 1.5 wt % of Cu, 0.2 to 1.5 wt % of Fe, and between 0.05 and less than 0.6 wt % of Mn, and one or more members selected from the group of 0.01 to 0.2 wt % of Cr, 0.01 to 0.2 wt % of Ti, 0.01 to 0.2 wt % of Zr, and 0.01 to 0.2 wt % of V, with the balance of aluminum and unavoidable impurities.Type: GrantFiled: October 17, 2001Date of Patent: March 8, 2005Assignees: Furukawa-Sky Aluminum Corp., Honda Giken Kogyo Kabushiki KaishaInventors: Kazuhisa Kashiwazaki, Yoichiro Bekki, Noboru Hayashi
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Patent number: 6843863Abstract: Aluminum alloy compositions are disclosed, which include small amounts of calcium that result in improved surface properties of the cast aluminum. The calcium, and up to 0.25% grain refiners, are added along with alkaline earth metals, transition metals and/or rare earth metals to the aluminum alloy as a melt. The addition results in improved appearance, substantially reduced surface imperfections and reduced surface oxidation in cast ingot aluminum and aluminum alloys. The addition of small amounts of these additives, surprisingly were found to substantially eliminate vertical folds, pits and ingot cracking in more than one ingot casting technique. The additions also improved the appearance of the ingots, including reflectance. As a result, the ingots could be reduced or worked essentially right out of the casting without first conditioning the surface by, for example, scalping.Type: GrantFiled: January 18, 2002Date of Patent: January 18, 2005Assignee: Alcoa Inc.Inventors: David H. DeYoung, William F. McGinnis, Ray T. Richter, Jeffrey J. Wiesner
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Publication number: 20040256036Abstract: Aluminium-magnesium alloy in the form of a rolled product or an extrusion, having the composition in weight percent:—Mg 4.5-5.6 Mn 0.05-0.4 Zn 0.40-0.8 Cu 0.06-0.35 Cr 0.25 max. Fe 0.35 max. Si 0.25 max. Zr 0.12 max. Ti 0.3 max. others (each) max. 0.05, (total) max. 0.15 balance aluminium.Type: ApplicationFiled: August 27, 2004Publication date: December 23, 2004Inventors: Job Anthonius Van Der Hoeven, Linzhong Zhuang, Bruno Schepers, Peter De Smet, Jean Pierre Jules Baekelandt
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Publication number: 20040228755Abstract: High strength aluminum alloy powders, extrusions, and forgings are provided in which the aluminum alloys exhibit high strength at atmospheric temperatures and maintain high strength and ductility at extremely low temperatures. The alloy is produced by blending about 89 atomic % to 99 atomic % aluminum, 1 atomic % to 11 atomic % of a secondary metal selected from the group consisting of magnesium, lithium, silicon, titanium, zirconium, and combinations thereof, and up to about 10 atomic % of a tertiary metal selected from the group consisting of Be, Ca, Sr, Ba, Ra, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, W, and combinations thereof. The alloy is produced by nanostructure material synthesis, such as cryomilling, in the absence of refractory dispersoids. The synthesized alloy is then canned, degassed, consolidated, extruded, and optionally forged into a solid metallic component. Grain size within the alloy is less than 0.5 &mgr;m, and alloys with grain size less than 0.Type: ApplicationFiled: February 5, 2004Publication date: November 18, 2004Applicant: THE BOEING COMPANYInventors: Leslie G. Fritzemeier, Daniel E. Matejczyk, Thomas J. Van Daam
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Publication number: 20040182482Abstract: There is disclosed a DC cast alloy of composition (in wt %): Fe 0.8-1.5 Si 0.7-0.95 Mn 0.2-0.5 Zn 0.2-0.8 Mg up to 0.2 Cu up to 0.2 Ti<0.1 B<0.01 C<0.01. Unavoidable impurities up to 0.05 each, 0.15 total AI balance. Also disclosed is a method of DC casting the alloy to form an ingot.Type: ApplicationFiled: March 9, 2004Publication date: September 23, 2004Inventors: Alan Gray, Andrew David Howells
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Patent number: 6790407Abstract: The present invention relates to high-strength aluminium-based alloy of Al—Zn—Mg—Cu system and the article made thereof. Said alloy can be used as a structural material in aircraft- and rocket engineering, and for fabricating the articles for transportation- and instrument engineering. The advantage of the suggested alloy is its high strength and the required level of service properties combined with sufficient technological effectiveness necessary for fabricating various wrought semiproducts, mainly of large sizes. Said alloy has the following composition (in wt %): zinc 7.6-8.6 magnesium 1.6-2.3 copper 1.4-1.95 zirconium 0.08-0.20 manganese 0.01-0.1 iron 0.02-0.15 silicon 0.01-0.1 chrome 0.01-0.05 nickel 0.0001-0.03 beryllium 0.0001-0.005 bismuth 0.00005-0.0005 hydrogen 0.08 × 10−5-2.Type: GrantFiled: June 25, 2003Date of Patent: September 14, 2004Assignees: Federalnoe Gosudarstvennoe Unitarnoe Predpriyatie “Vserossiisky auchno-Issledovatelsky Institut Aviatsionnykh Materialov”, Otkrytoe Aktsionernoe Obschestvo “Samrsky Metallurgichesky Zavod”Inventors: Iosif Naumovich Fridlyander, Evgeny Nikolaevich Kablov, Olga Grigorievna Senatorova, Svetlana Fedorovna Legoshina, Vladimir Nikolaevich Samonin, Alexandr Juvenarievich Sukhikh, Johannes Koshorst
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Patent number: 6783869Abstract: The invention relates to an aluminium alloy for an anti-friction element containing respectively, as a % by weight, 4.2% to 4.8% Zn, 3.0% to 7.0% Si, 0.8% to 1.2% Cu, 0.7% to 1.3% Pb, 0.12% to 0.18% Mg, 0% to 0.3% Mn and 0% to 0.2% Ni. Also incorporated, based on % by weight, are 0.05% to 0.1% Zr, 0% to 0.05% Ti, 0% to 0.4% Fe, 0% to 0.2% Sn. The rest is formed by Al with the usual incidental impurities depending on the melt.Type: GrantFiled: November 7, 2002Date of Patent: August 31, 2004Assignee: MIBA Gleitlager AktiengesellschaftInventors: Johannes Humer, Herbert Kirsch, Markus Manner, Robert Mergen
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Publication number: 20040136862Abstract: An alloy product having improved fatigue failure resistance, comprising about, by weight, 7.6 to about 8.4% zinc, about 2.0 to about 2.6% copper, about 1.8 to about 2.3% magnesium, about 0.088 to about 0.25% Zr, about 0.01 to about 0.09% Fe, and about 0.01 to about 0.06 w % Si the balance substantially aluminum and incidental elements and impurities The alloy product, suitable for aerospace applications, exhibits improved fatigue failure resistance than its 7055 counterpart of similar size, shape, thickness and temper.Type: ApplicationFiled: November 17, 2003Publication date: July 15, 2004Inventors: Gary H. Bray, John Liu, Lynn Eugene Oswald
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Publication number: 20040115087Abstract: An aluminum-based material and method of manufacturing products from the aluminum-based material formed by a solid solution of zinc, magnesium and copper in aluminum with dispersed phase particles of aluminum, zinc, magnesium and copper essentially evenly distributed in the solution and particles of nickel aluminide being essentially evenly distributed in the matrix of the aluminum-based material that contains particles, essentially evenly distributed in the matrix, of at least one of the aluminides group such as chromium aluminide and zirconium aluminide, with a total content of 0.1-0.5% of the volume with the maximum amount of nickel aluminide particles being 3 &mgr;m and the proportion between the maximum and minimum amount of nickel aluminide particles of no more than 2 and with the maximum amount of chromium aluminide and zirconium aluminide particles is 0.Type: ApplicationFiled: June 9, 2003Publication date: June 17, 2004Inventors: Andrei Anatolyevich Axenov, Nikolay Alexandrovich Belov, Vadim Semenovich Zolotorevskij
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Patent number: 6743308Abstract: The present invention provides an aluminum alloy structural plate excelling in strength and corrosion resistance, in particular, resistance to stress corrosion cracking, and a method of manufacturing the aluminum alloy plate. This aluminum alloy structural plate includes 4.8-7% Zn, 1-3% Mg, 1-2.5% Cu, and 0.05-0.25% Zr, with the remaining portion consisting of Al and impurities, wherein the aluminum alloy structural plate has a structure in which grain boundaries with a ratio of misorientations of 3-10° is 25% or more at the plate surface. The aluminum alloy structural plate is manufactured by: homogenizing an ingot of an aluminum alloy having the above composition; hot rolling the ingot; repeatedly rolling the hot-rolled product at 400-150° C. so that the degree of rolling is 70% or more to produce a plate with a specific thickness, or repeatedly rolling the hot-rolled product at a material temperature of 400-150° C. in a state in which rolls for hot rolling are heated at 40° C.Type: GrantFiled: November 2, 2001Date of Patent: June 1, 2004Assignees: Kabushiki Kaisha Kobe Seiko Sho., Sumitomo Light Metal Industries, Ltd., Nippon Light Metal Co., Ltd., The Furukawa Electric Co., Ltd., Mitsubishi Aluminum Co., Ltd.Inventors: Hiroki Tanaka, Hiroki Esaki, Tadashi Minoda
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Publication number: 20040101434Abstract: The present invention relates to high-strength aluminium-based alloy of Al—Zn—Mg—Cu system and the article made thereof. Said alloy can be used as a structural material in aircraft—and rocket engineering, and for fabricating the articles for transportation—and instrument engineering.Type: ApplicationFiled: June 25, 2003Publication date: May 27, 2004Inventors: Iosif Naumovich Fridlyander, Evgeny Nikolaevich Kablov, Olga Grigorievna Senatorova, Svetlana Fedorovna Legoshina, Vladimir Nikolaevich Samonin, Alexandr Juvanarievich Sukhikh, Johannes Koshorst
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Publication number: 20040091386Abstract: The use of A1-5083 in a wide range of applications has been an industrial constant for many years. It possesses an excellent balance of properties, including high strength, good weldability, light weight and low cost. One of the commonly perceived drawbacks of the use of 5083 has been concern over susceptibility to stress corrosion cracking (SCC) and subsequent failure while in service. In the present invention, the susceptibility of high-magnesium Al—Mg alloys to SCC was evaluated with an eye toward altering SCC characteristics through compositional changes. These alloy composition changes are comprised of minor additions of Zn and Cu, in levels that are preferably low enough to minimize changes to the favorable bulk properties already inherent to A1-5083. Additionally, in accordance with the present invention, established industrial practices for material processing have been mimicked in order to evaluate the effects on inventive alloys in what would essentially be considered an as-supplied state.Type: ApplicationFiled: July 29, 2003Publication date: May 13, 2004Inventors: Mark C. Carroll, Michael J. Mills, Rudolph G. Buchhiet, Glenn S. Daehn, Bruce Morere, Paul Kobe, H. S. Goodrich
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Publication number: 20040089378Abstract: The present invention provides a high strength aluminum alloy composition and applications of the high strength aluminum alloy composition. The alloy composition exhibits high tensile strength at ambient temperatures and cryogenic temperatures. The alloy composition can exhibit high tensile strength while maintaining a high elongation in temperatures and cryogenic temperatures.Type: ApplicationFiled: November 8, 2002Publication date: May 13, 2004Inventors: Oleg N. Senkov, Svetlana V. Senkova, Madan G. Mendiratta, Daniel B. Miracle, Yuly V. Milman, Dina V. Lotsko, Alexandr I. Sirko
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Publication number: 20040086418Abstract: The invention relates to a work-hardened product, particularly a rolled, extruded or forged product, made of an alloy with the following composition (% by weight):Type: ApplicationFiled: July 7, 2003Publication date: May 6, 2004Inventors: Timothy Warner, Ronan Dif, Bernard Bes, Herve Ribes
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Patent number: 6726785Abstract: An aluminum alloy sheet material, containing 2.6% by mass or more and less than 3.5% by mass (% by mass is simply denoted by % hereinafter) of Si, 0.05 to 0.5% of Mg, 0.5% or more and less than 1.2% of Cu, 0.6 to 1.5% of Mn, 0.5 to 1.6% of Zn, and 0.3 to 2.0% of Fe, and containing, if necessary, at least one of 0.01 to 0.2% of Cr, 0.01 to 0.2% of Zr, 0.01 to 0.2% of V, and 0.01 to 0.2% of Ti, with the balance of Al and unavoidable impurities. A method of producing the aluminum alloy sheet material, which method contains carrying out specific workings.Type: GrantFiled: May 16, 2002Date of Patent: April 27, 2004Assignees: The Furukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Koji Oyama, Yoichiro Bekki, Noboru Hayashi, Morio Kuroki
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Patent number: 6726878Abstract: The invention relates to high strength aluminium—based alloy of Al—Zn—Mg—Cu system and the articles made thereof. The present alloy is characterized by the combination of improved properties: flowability, technological plasticity, fracture toughness while preserving high levels of strength properties. Said alloy comprises (mass. %): Zn 6.35-8.0 Si 0.01-0.2 Mg 0.5-2.5 Fe 0.06-0.25 Cu 0.8-1.3 Zr 0.07-0.2 Cr 0.001-0.05 Ti 0.03-0.1 Mn 0.001-0.1 Be 0.0001-0.05 and at least one element from the group of alkali-earth metals: K 0.0001-0.01 Na 0.0001-0.01 Ca 0.0001-0.01 Al-balance the sum Zr+2Ti≦0.3%, and the ratio Si:Be≧2.Type: GrantFiled: May 22, 2002Date of Patent: April 27, 2004Assignees: Federalnoe Gosudarstvennoe Unitarnoe Predpriyatie “Vserossiisky Nauchno-Issle-Dovatelsky Institut Aviatsionnykh Materialov”, Otkrytoe Aktsionernoe Obschestvo “Samarsky Metallurgichesky Zavod”Inventors: Iosif Naumovich Flidlyander, Evgeny Nikolaevich Kablov, Evgeniya Anatolievna Tkachenko, Vladimir Nikolaevich Samonin, Viktor Yakovlevich Valkov
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Publication number: 20040071586Abstract: An aluminum-copper-magnesium alloy having ancillary additions of lithium. The alloy composition includes from about 3 to about 5 weight percent Cu, from about 0.5 to about 2 weight percent Mg, and from about 0.01 to about 0.9 weight percent Li. The combined amount of Cu and Mg is maintained below a solubility limit of the aluminum alloy. The alloys possess improved combinations of fracture toughness and strength, and also exhibit good fatigue crack growth resistance.Type: ApplicationFiled: October 3, 2003Publication date: April 15, 2004Inventors: Roberto J. Rioja, Gary H. Bray, Paul E. Magnusen
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Patent number: 6716390Abstract: An aluminum alloy extruded material for automotive structural members, which contains 2.6 to 5 wt % of Si, 0.15 to 0.3 wt % of Mg, 0.3 to 2 wt % of Cu, 0.05 to 1 wt % of Mn, 0.2 to 1.5 wt % of Fe, 0.2 to 2.5 wt % of Zn, 0.005 to 0.1 wt % of Cr, and 0.005 to 0.05 wt % of Ti, and satisfies relationship of the following expression (I), (Content of Mn (wt %))+0.32×(content of Fe (wt %))+0.097×(content of Si (wt %))+3.5×(content of Cr (wt %))+2.9×(content of Ti (wt %))≦1.36 (I) with the balance being made of aluminum and unavoidable impurities. A method of producing the aluminum alloy extruded material for automotive structural members, which comprises cooling with a refrigerant from outside of a die-exit side, at the time of extrusion.Type: GrantFiled: December 15, 2000Date of Patent: April 6, 2004Assignees: The Furukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yoichiro Bekki, Noboru Hayashi
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Publication number: 20040062678Abstract: All aluminum alloy is disclosed that includes 6.5 to 8.5 percent silicon, 0.6 to 1.0 percent iron, 0.0 to 0.5 percent manganese, 0.35 to 0.65 percent magnesium, 0.0 to 1.0 percent zinc, 0.0 to 0.2 percent titanium, 2.0 to 2.5 percent copper, and aluminum as the remainder with further one or more other elements that are 0.0 to 0.15 percent of the weight of the aluminum alloy. An aluminum alloy of the above composition is high in strength and suitable for use with SSM methods of casting, such as Rheocasting and Thixocasting.Type: ApplicationFiled: October 28, 2003Publication date: April 1, 2004Applicant: SPX CorporationInventor: Rathindra DasGupta
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Patent number: 6706242Abstract: Heat resistant Al die cast material having 12.5% to 14.0% of Si, 3.0% to 4.5% of Cu, 1.4% to 2.0% of Mg, and 1.12% to 2.4% of Zn. The die cast metal becomes amenable to age hardening treatment when appropriate amounts of Mg and Zn are added to an Al—Si—Cu alloy for enhancing mechanical strength and seizure characteristics.Type: GrantFiled: March 27, 2002Date of Patent: March 16, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Norimasa Takasaki, Yuuko Yoshimura
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Patent number: 6676899Abstract: A chemical composition of alloys, in particular naturally hard semifinished-material alloys, which are intended to be used in this form as material for semifinished materials. A naturally hard aluminum alloy for semifinished materials which, in addition to magnesium, titanium, beryllium, zirconium, scandium, and cerium, is also made of manganese, copper, zinc, and an element group containing iron and silicon, the ratio of iron to silicon being in the range of 1 to 5.Type: GrantFiled: November 12, 2002Date of Patent: January 13, 2004Assignee: Eads Deutschland GmbHInventors: Valentin Georgijevich Davydov, Yuri Filatov, Blanka Lenczowski, Viktor Yelagin, Valeri Zakarov
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Publication number: 20030219353Abstract: The invention relates to alloys and associated products which are laminated, extruded or forged in Al—Zn—Mg—Cu alloy.Type: ApplicationFiled: April 4, 2003Publication date: November 27, 2003Inventors: Timothy Warner, Christophe Sigli, Bernard Bes
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Publication number: 20030156967Abstract: The present invention relates to the chemical composition of alloys, in particular naturally hard semifinished-material alloys, which are intended to be used in this form as material for semifinished materials.Type: ApplicationFiled: November 12, 2002Publication date: August 21, 2003Inventors: Valentin Georgijevich Davydov, Yuri Filatov, Blanka Lenczowski, Viktor Yelagin, Valeri Zakarov
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Patent number: 6607615Abstract: There is disclosed an aluminum alloy extruded material for structural members of automotive bodies, which is composed of an aluminum alloy containing more than 2.6 wt % but 4.0 wt % or less of Si and more than 0.3 wt % but 1.5 wt % or less of Mg, further, (i) containing Mn, Zn, Cu, and Fe each in a given amount, or (ii) containing Zn, Cu, and Fe each in a given amount and containing at least one selected from among Mn, Cr, Zr, and V in a given amount, and the balance being made of Al and unavoidable impurities, which material has a given conductivity and a given melting start temperature. There is also disclosed a method for producing the extruded material, in which after an aluminum alloy ingot of the above composition is subjected to a homogenizing treatment at given conditions, it is cooled, heated again, and subjected to hot extrusion at given conditions.Type: GrantFiled: August 6, 1999Date of Patent: August 19, 2003Assignees: The Furukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yoichiro Bekki, Kazuhisa Kashiwazaki, Nobuaki Ohara, Noboru Hayashi
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Publication number: 20030145912Abstract: Aluminium-magnesium alloy in the form of a rolled product or an extrusion, having the following composition in weight percent: 1 Mg >3.0-4.5 Mn 0.4-1.2 Zn 0.4-1.7 Zr 0.05-0.25 Cr 0.3 max. Ti 0.2 max. V 0.2 max. Li 0.5 max. Sc 0.5 max. Fe 0.5 max. Si 0.5 max. Cu 0.15 max. Ag 0.4 max. others (each) max. 0.05 (total) max. 0.15 balance aluminium.Type: ApplicationFiled: November 20, 2002Publication date: August 7, 2003Inventors: Alfred Johann Peter Haszler, Desikan Sampath, Jean Pierre Jules Baekelandt, Job Anthonius Van Der Hoeven