Patents Examined by Janelle Morillo
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Patent number: 9249484Abstract: New 7xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 7xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 7xxx aluminum alloy bodies may realize improved strength and other properties.Type: GrantFiled: September 8, 2011Date of Patent: February 2, 2016Assignee: ALCOA INC.Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
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Patent number: 9243312Abstract: There is provided an aluminum alloy casting consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn and the balance being Al and unavoidable impurities, or consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn, 0.3 to 1.0 mass % of Cu and the balance being Al and unavoidable impurities, and containing eutectic Si grains having an aspect ratio of 2.0 or smaller and an average grain size of 1.0 micrometer or smaller. There is also provided an automotive part formed with the aluminum alloy casting and a production method of the aluminum alloy casting.Type: GrantFiled: July 27, 2010Date of Patent: January 26, 2016Assignees: NISSAN MOTOR CO., LTD., NIPPON LIGHT METAL COMPANY, LTD.Inventors: Yusuke Nagaishi, Shigeyuki Nakagawa, Koji Itakura, Haruyasu Katto, Satoru Suzuki
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Patent number: 9242678Abstract: In a car body or component thereof with at least one first component of sheet metal of a first aluminum alloy and at least one second component of sheet metal of a second aluminum alloy, the first and second aluminum alloys are of type AlMgSi and in the sheet metal of the second aluminum alloy a substantial part of the elements Mg and Si, which are required to achieve artificial ageing in solid solution, is present in the form of separate Mg2Si and/or Si particles in order to avoid artificial ageing. By reduction of the hardening capacity of the second component during artificial ageing of the body as part of the paint baking cycle, the car body has an improved impact protection for pedestrians in comparison with solutions according to the prior art.Type: GrantFiled: September 16, 2013Date of Patent: January 26, 2016Assignee: Novelis Inc.Inventors: Corrado Bassi, Juergen Timm
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Patent number: 9217622Abstract: Improved 5xxx aluminum alloys and products made therefrom are disclosed. The new 5xxx aluminum alloy products may achieve an improved combination of properties due to, for example, the presence of copper. In one embodiment, the new 5xxx aluminum alloy products are able to achieve an improved combination of properties by solution heat treatment.Type: GrantFiled: July 23, 2010Date of Patent: December 22, 2015Assignee: Alcoa Inc.Inventors: Dirk C. Mooy, Roberto J. Rioja, Ralph R. Sawtell, Francine S. Bovard, Gregory B. Venema, David A. Linde
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Patent number: 9214251Abstract: An aluminum alloy conductor, containing: 0.01 to 0.4 mass % of Fe, 0.1 to 0.3 mass % of Mg, 0.04 to 0.3 mass % of Si, 0.1 to 0.5 mass % of Cu, and 0.001 to 0.01 mass % of Ti and V in total, with the balance being Al and inevitable impurities, wherein the conductor contains three kinds of intermetallic compounds A, B, and C, in which the intermetallic compounds A, B, and C have a particle size of 0.1 ?m or more but 2 ?m or less, 0.03 ?m or more but less than 0.1 ?m, and 0.001 ?m or more but less than 0.03 ?m, respectively, and area ratios a, b, and c of the intermetallic compounds A, B, and C, in an arbitrary region in the conductor, satisfy: 0.1%?a?2.5%, 0.1%?b?3%, and 1%?c?10%.Type: GrantFiled: August 24, 2012Date of Patent: December 15, 2015Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.Inventors: Shigeki Sekiya, Kuniteru Mihara, Kyota Susai
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Patent number: 9206494Abstract: A strip for the production of a substrate for lithographic printing plates consisting of aluminum or an aluminum alloy and has at least to some extent a microcrystalline surface layer as a result of hot and/or cold roll passes. When analyzed in a two-dimensional microprobe analysis according to the mapping method of a surface region of the microcrystalline surface of the strip, the surface portion having an intensity ratio I/Ibulk(avg) of greater than 3 in the spectral range of the K?1 line of the X-ray emission spectrum of oxygen of the measured microcrystalline surface layer is less than 10%, preferably less than 7%, wherein, during the two-dimensional microprobe analysis, an excitation voltage of 15kV, a beam current of 50 nA and a beam cross section of 1 ?m is used with a step size of 16.75 ?m for the electron beam.Type: GrantFiled: July 20, 2007Date of Patent: December 8, 2015Assignee: Hydro Aluminium Deutschland GmbHInventors: Bernhard Kernig, Henk-Jan Brinkman
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Patent number: 9194028Abstract: New 2xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 2xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 2xxx aluminum alloy bodies may realize improved strength and other properties.Type: GrantFiled: September 8, 2011Date of Patent: November 24, 2015Assignee: Alcoa Inc.Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
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Patent number: 9194029Abstract: A production method of the present invention includes a step of obtaining an aluminum alloy melt having an alloy composition containing Fe: 0.2 to 0.35 mass %, Cu: 0.05 to 0.20 mass %, Mn: 0.3 to 0.6 mass %, Mg: 1.3 to 2.0 mass %, Zn: 4.6 to 5.1 mass %, and Zr: 0.1 mass % or more, a sum of Zr and Ti being 0.2 mass % or less, the composition satisfying a relation of ([Mg mass %]??0.5×[Zn mass %]+3.8) and a relation of ([Ti mass %]/[Zr mass %]?0.2), and the balance being aluminum and inevitable impurities, and a step of obtaining an aluminum alloy ingot having a structure that has a DAS of 40 ?m or less and an average crystal grain diameter of 8 ?m or less by continuously casting the aluminum alloy melt at a casting rate satisfying ([maximum casting rate (mm/min)]??1.43×[casting diameter (mm)]+500), and a step of obtaining an aluminum alloy cast member by subjecting the aluminum alloy ingot to a homogenization treatment in which the ingot is held for 1 hour at a temperature of 450 to 600° C.Type: GrantFiled: April 28, 2010Date of Patent: November 24, 2015Assignee: SHOWA DENKO K.K.Inventor: Hideki Takemura
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Patent number: 9163304Abstract: High strength forged aluminum alloys and methods for producing the same are disclosed. The forged aluminum alloy products may have grains having a high aspect ratio in at least two planes, generally the L-ST and the LT-ST planes. The forged aluminum alloy products may also have a high amount of texture. The forged products may realize increased strength relative to conventionally prepared forged products of comparable product form, composition and temper.Type: GrantFiled: April 20, 2010Date of Patent: October 20, 2015Assignee: Alcoa Inc.Inventors: Dustin M. Bush, Edward L. Colvin, Roberto J. Rioja, Ralph R. Sawtell
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Patent number: 9147504Abstract: An aluminum alloy, an aluminum alloy wire, an aluminum alloy stranded wire, a covered electric wire, and a wire harness that are of high toughness and high electrical conductivity, and a method of manufacturing an aluminum alloy wire are provided. The aluminum alloy wire contains not less than 0.005% and not more than 2.2% by mass of Fe, and a remainder including Al and an impurity. It may further contain not less than 0.005% and not more than 1.0% by mass in total of at least one additive element selected from Mg, Si, Cu, Zn, Ni, Mn, Ag, Cr, and Zr. The Al alloy wire has an electrical conductivity of not less than 58% IACS and an elongation of not less than 10%. The Al alloy wire is manufactured through the successive steps of casting, rolling, wiredrawing, and softening treatment.Type: GrantFiled: December 19, 2012Date of Patent: September 29, 2015Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC TOYAMA CO., LTD.Inventors: Misato Kusakari, Yoshihiro Nakai, Taichirou Nishikawa, Yoshiyuki Takaki, Yasuyuki Ootsuka
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Patent number: 9138833Abstract: Disclosed is an aluminum alloy brazing sheet for heat exchanger which excels in resistance to corrosion from its inside and simultaneously attains satisfactory erosion resistance and high strength. This includes a core material of an Al alloy containing predetermined amounts of Si, Mn, Cu, Mg, and Ti; a clad material of an Al alloy containing predetermined amounts of Si, Mn, and Zn, having a predetermined thickness, and lying on one side of the core material so as to constitute an inner side of a tube member of the heat exchanger; and a filler material of an Al alloy containing a predetermined amount of Si, having a predetermined thickness, and lying on the other side of the core material so as to constitute an outer side of the tube member. The crystal grain size of the core material after brazing under specific conditions is 50 ?m or more but less than 300 ?m in a rolling direction.Type: GrantFiled: March 11, 2008Date of Patent: September 22, 2015Assignee: Kobe Steel, Ltd.Inventors: Fumihiro Koshigoe, Toshiki Ueda, Shimpei Kimura
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Patent number: 9127346Abstract: This invention provides sputtering target materials having high reflectance and excellent heat resistance, which are formed of Ag base alloys formed by adding a specific, minor amount of P to Ag and alloying them.Type: GrantFiled: November 29, 2011Date of Patent: September 8, 2015Assignee: ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Koichi Hasegawa, Nobuo Ishii
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Patent number: 9090950Abstract: The present invention provides a process for suppressing abnormal grain growth in friction stir welded aluminum alloys by inserting an intermediate annealing treatment (“IAT”) after the welding step on the article. The IAT may be followed by a solution heat treatment (SHT) on the article under effectively high solution heat treatment conditions. In at least some embodiments, a deformation step is conducted on the article under effective spin-forming deformation conditions or under effective superplastic deformation conditions. The invention further provides a welded article having suppressed abnormal grain growth, prepared by the process above. Preferably the article is characterized with greater than about 90% reduction in area fraction abnormal grain growth in any friction-stir-welded nugget.Type: GrantFiled: October 12, 2011Date of Patent: July 28, 2015Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Stephen J Hales, Harold Dale Claytor, Joel A. Alexa
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Patent number: 9085328Abstract: In a car body or component thereof with at least one first component of sheet metal of a first aluminum alloy and at least one second component of sheet metal of a second aluminum alloy, the first and second aluminum alloys are of type AlMgSi and in the sheet metal of the second aluminum alloy a substantial part of the elements Mg and Si, which are required to achieve artificial ageing in solid solution, is present in the form of separate Mg2Si and/or Si particles in order to avoid artificial ageing. By reduction of the hardening capacity of the second component during artificial ageing of the body as part of the paint baking cycle, the car body has an improved impact protection for pedestrians in comparison with solutions according to the prior art.Type: GrantFiled: May 9, 2012Date of Patent: July 21, 2015Assignee: Novelis Inc.Inventors: Corrado Bassi, Juergen Timm
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Patent number: 9039850Abstract: An aluminum alloy forging material of the present invention is constituted by an aluminum alloy cast product obtained by subjecting an aluminum alloy ingot having a structure in which a secondary dentrite arm spacing (DAS) is 40 ?m or less and an average grain diameter of crystallized substances is 8 ?m or less to homogenization treatment for holding the ingot for one hour or more under temperature conditions of 450 to 510° C., wherein the ingot is obtained by continuously casting a molten aluminum alloy having an alloy composition consisting of: Si: 0.80 to 1.15 mass %; Fe: 0.2 to 0.5 mass %; Cu: 3.8 to 5 mass %; Mn: 0.8 to 1.15 mass %; Mg: 0.5 to 0.8 mass %; Zr: 0.05 to 0.13 mass %; and Ti contained in such an amount that a sum of Ti and Zr is 0.Type: GrantFiled: December 12, 2008Date of Patent: May 26, 2015Assignee: Showa Denko K.K.Inventor: Hideki Takemura
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Patent number: 9039848Abstract: An aluminum alloy wrought product including, in wt. %, Mg 3.0 to 7.0, Zn 0.6 to 2.8, Mn 0 to 1.0, Cu 0 to 2.0, Sc 0 to 0.6, at least one element selected from the group of Zr 0.04 to 0.4, Cr 0.04 to 0.4, Hf 0.04 to 0.4 and Ti 0.01 to 0.3; Fe maximum 0.3, Si maximum 0.3, inevitable impurities, and balance aluminum. The range for the Zn-content in wt. % is a function of the Mg-content according to: lower-limit of the Zn-range: [Zn]=0.34[Mg]?0.4, and upper-limit of the Zn-range: [Zn]=0.34[Mg]+0.4.Type: GrantFiled: November 5, 2008Date of Patent: May 26, 2015Assignee: ALERIS ALUMINUM KOBLENZ GMBHInventors: Andrew Norman, Alastair Wise, Achim Burger, Sabine Spangel
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Patent number: 9023484Abstract: Method and apparatus for forming aluminum ingot having shaped ends to avoid alligatoring during rolling.Type: GrantFiled: June 25, 2008Date of Patent: May 5, 2015Assignee: Tri-Arrows Aluminum Inc.Inventors: Gyan Jha, J. David Brown, Shridas Ningileri, Weimin Yin, Randall Bowers
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Patent number: 8999079Abstract: New 6xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 6xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 6xxx aluminum alloy bodies may realize improved strength and other properties.Type: GrantFiled: August 17, 2012Date of Patent: April 7, 2015Assignee: Alcoa, Inc.Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
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Patent number: 8992704Abstract: The present invention solves the problem of melting of Al in heating before hot-stamping, which had been a problem in the past in applying hot-stamping to Al-plated steel sheet, and provides Al-plated steel sheet for hot-stamping and a method of hot-stamping using that Al-plated steel sheet to solve the problem of delayed fracture due to residual hydrogen, and, furthermore, a method of a rapid heating hot-stamping using that Al-plated steel sheet. The Al-plated steel sheet of the present invention is produced by annealing the Al-plated steel sheet as coiled in a box-anneal furnace for the time and at the temperature indicated in FIG. 5, and alloying of a plated Al and a steel sheet. Further, a method of rapid heating hot-stamping in the present invention is characterized by cutting out a stamping blank of an Al-plated steel sheet, and heating that blank in heating before hot-stamping by an average temperature with a rising rate of 40° C./sec or more and a time of exposure to an environment of 700° C.Type: GrantFiled: July 13, 2009Date of Patent: March 31, 2015Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Jun Maki, Masayuki Abe, Kazuhisa Kusumi, Yasushi Tsukano
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Patent number: 8974728Abstract: The invention relates to hot-dip cast aluminum alloy for anticorrosion treatment on engineering parts resistant to marine climate and a preparation method thereof, wherein said cast aluminum alloy contains Al, Zn, Si, Mg, RE, Ti, Ni and nanometer oxide particle reinforcing agent, said nanometer oxide particle reinforcing agent is selected from one or two of TiO2 and CeO2, the mass percentage of the components is as follows: Zn: 35-58%, Si: 0.3-4.0%, Mg: 0.1-5.0%, RE: 0.02-1.0%, Ti: 0.01-0.5%, Ni: 0.1-3.0%, and the total content of the nanometer oxide particle reinforcing agent: 0.01-1.0%; and the balance consists of Al and unavoidable impurities. The coating using cast aluminum alloy prepared by the invention has sufficient corrosion resistance and scour resistance in marine climate.Type: GrantFiled: March 31, 2010Date of Patent: March 10, 2015Assignee: Jiangsu Linlong New Materials Co., Ltd.Inventors: Lixin Feng, Minyan Zhang, Qiang Miao