Vanadium Containing Patents (Class 420/420)
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Patent number: 5503798Abstract: A multiphase, high-temperature material contains an intermetallic base alloy of the Ti.sub.3 Al type, which is intended especially for use in heat engines such as internal combustion engines, gas turbines and aircraft engines. The material contains from 44 to 73 atom % titanium, from 19 to 35 atom % aluminum, from 2 to 6 atom % silicon, and from 5 to 15 atom % niobium. The desired microstructure is attained by heat treating the alloy at between 800.degree. and 1100.degree. C.Type: GrantFiled: April 18, 1994Date of Patent: April 2, 1996Assignees: ABB Patent GmbH, GKSS-Forschungszentrum Geesthacht GmbHInventors: Lorenz Singheiser, Richard Wagner, Peter Beaven, Heinrich Mecking, Jiansheng Wu
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Patent number: 5431874Abstract: Titanium alloys containing aluminum, hafnium, tantalum, and silicon are found to have improved tensile strengths as well as ductility and oxidation resistance at temperatures up to and above 750.degree. C. without embrittlement.Type: GrantFiled: January 3, 1994Date of Patent: July 11, 1995Assignee: General Electric CompanyInventor: Michael F. X. Gigliotti, Jr.
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Patent number: 5411614Abstract: A method of making a titanium base alloy comprising the steps of heating a titanium base alloy to a temperature ranging from .beta.-transus minus 250.degree. C. to .beta.-transus; and hot working the heated alloy with a reduction ratio of at least 50%. The titanium base alloy consists essentially of about 3.42 to 5 wt. % Al, 2.1 to 3.7 wt. % V, 0.85 to 2.37 wt. % Mo, at least 0.01 wt. % O, at least one element selected from the group consisting of Fe, Co, Cr, and the balance being titanium. The invention also includes superplastic forming of said alloys. The titanium alloy satisfies the following equations:0.85 wt. %.ltoreq.X wt. %.ltoreq.3.15 wt. %,7 wt. %.ltoreq.Y wt. %.ltoreq.13 wt. %,X wt. %=Fe wt. %+Co wt. %+0.9 Cr wt. %Y wt. %=2.times.Fe wt. %+2.times.Co wt. %+1.8.times.Cr wt. %+1.5.times.V wt. %+Mo wt. %.Type: GrantFiled: August 18, 1994Date of Patent: May 2, 1995Assignee: NKK CorporationInventors: Atsushi Ogawa, Kuninori Minakawa, Kazuhide Takahashi
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Patent number: 5366570Abstract: A titanium matrix composite having eutectically formed titanium alloy reinforcement containing at least two of the elements of silicon, aluminum, zirconium, manganese, chromium, molybdenum, carbon, iron, boron, cobalt, nickel, germanium and copper.Type: GrantFiled: March 2, 1993Date of Patent: November 22, 1994Assignee: Cermics Venture InternationalInventors: Vladislav I. Mazur, Yuri N. Taran, Svetlana V. Kapustnikova, Viktor I. Trefilov, Sergey A. Firstov, Leonid D. Kulak
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Patent number: 5362441Abstract: A method of making a titanium base alloy comprising the steps of: heating a titanium base alloy to a temperature ranging from .beta.-transus minus 250.degree. C. to 5-transus; the titanium base alloy consisting essentially of about 3.42 to 5 wt. % Al, 2.1 to 3.7 wt. % V, 0.85 to 3.15 wt. % Mo, at least 0.01 wt. % 0, at least one element selected from the group consisting of Fe, Ni, Co and Cr, and the balance being titanium, and satisfying the following equations: 0.85 wt. %.ltoreq.X wt %.ltoreq.3.15 wt %, 7 wt %.ltoreq.Y wt %.ltoreq.13 wt. %, X wt. %=Fe wt. %+Ni wt. %+Co wt. %+0.9.times.Cr wt. %, Y wt. %=2.times.Fe wt. %+2.times.Ni wt. %+2.times.Co wt. %+1.8.times.Cr wt. %+1.5.times.V wt. %+Mo wt. %, and hot working the heated alloy with a reduction ratio percent of at least 50%.Type: GrantFiled: December 20, 1993Date of Patent: November 8, 1994Assignee: NKK CorporationInventors: Atsushi Ogawa, Kuninori Minakawa, Kazuhide Takahashi
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Patent number: 5360677Abstract: A magnetic disk substrate having a composition wherein (V/13)+(Fe/20)+(Cr/17)+(Ni/31)+(Co/23) are no greater than 0.010%, Rem+Si+B+W are no greater than 0.015% (where Rem denotes rare earth metals), 0+2N+0.75C are no less than 0.03% and no greater than 0.5%, and the remainder consists substantially of Ti, all % being weight %.Type: GrantFiled: January 13, 1993Date of Patent: November 1, 1994Assignee: NKK CorporationInventors: Hideaki Fukai, Hiroyoshi Suenaga, Kuninori Minakawa, Shinichiro Otaka, Masahiko Naoe
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Patent number: 5332545Abstract: The present invention relates to a low cost process for providing equivalent or superior ballistic resistance performance compared to standard Ti-6Al-4V alloys. The present inventions process involves increasing the oxygen content of Ti-6Al-4V beyond the conventional limit of 0.20% maximum reported for prior art compounds and subsequently thereafter heating the oxygen rich titanium alloy at temperatures within the beta phase field for further processing.Additionally, the present invention provides a novel Ti-6Al-4V alloy composition which exhibits improved tensile and yield strength properties. Titanium compositions of the present invention exhibit improved ballistic properties compared to titanium compositions previously disclosed in the art. The novel Ti-6Al-4V composition of the present invention is obtained by modifying the alloy composition limits to 5.5 to 6.75% Al, 3.5 to 4.5% V, 0.20 to 0.30% O.sub.2, <0.50% Fe and 0.Type: GrantFiled: March 30, 1993Date of Patent: July 26, 1994Assignee: RMI Titanium CompanyInventor: William W. Love
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Patent number: 5296055Abstract: A titanium aluminide is composed of 31 to 34 mass % of Al, 1.5 to 3.0 mass % of Fe, 0.5 to 2.0 mass % of V, 0.18 to 0.35 mass % of B with remainder being Ti and inevitable impurities. The 0.5 to 2.0 mass % of V may be replaced with a 1.0 to 3.0 mass % of Mo or a 0.3 to 1.5 mass % of Cr. By precision casting this alloy, a novel titanium aluminide alloy is obtained in which numerous whisker-like Ti--B compound are uniformly dispersed. The titanium aluminide alloy does not possess a coarse lamellar structure which would cause cracking.Type: GrantFiled: July 30, 1991Date of Patent: March 22, 1994Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventor: Kenji Matsuda
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Patent number: 5256369Abstract: A Titanium base alloy with improved superplastic, hot workability, cold workability, and mechanical properties is provided. The alloy has about 4% Al and 2.5% V, with below 0.15% O, with 2% Fe and 2% Mo, 0.85.about.3.15 wt. % Mo, and at least one element from the group of Fe, Ni, Co, and Cr as beta stabilizing elements, and as contributing elements to the lowering of beta transus, finally to the improvement of the superplastic properties, and hot and cold workability, with the grain size of below 5 .mu.m. A method of making thereof is provided with the reheating temperature between beta transus minus 250.degree. C. and beta transus.A method of superplastic forming thereof is provided with the heat treating temperature between beta transus minus 250.degree. C. and beta transus.Type: GrantFiled: May 8, 1992Date of Patent: October 26, 1993Assignee: NKK CorporationInventors: Atsushi Ogawa, Kuninori Minakawa, Kazuhide Takahashi
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Patent number: 5205984Abstract: Titanium niobium aluminide alloys having improved room temperature ductility and fracture toughness are comprised of, in atomic percent, about 18 to 30 percent aluminum, about 18 to 34 percent niobium, about 0.25 to 7 percent vanadium, and the balance substantially titanium.Type: GrantFiled: October 21, 1991Date of Patent: April 27, 1993Assignee: General Electric CompanyInventor: Raymond G. Rowe
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Patent number: 5183635Abstract: Heat treatable titanium alloys of the Ti.sub.3 Al type comprise 20 to 23 Al - 9 to 15 Nb-0.5 to 1.0 Si balance essentially T; (at %). These alloys exhibit a good balance of properties at room temperature and at high temperature (600.degree. C. plus) especially when solution treated in the .beta. field and artifically aged. Zr, V and Mo can be included in the alloys.Type: GrantFiled: February 25, 1990Date of Patent: February 2, 1993Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventors: Stephen Kerry, James E. Restall, deceased, Michael I. Wood
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Patent number: 5169460Abstract: There is disclosed an engine valve of titanium alloy having a stem portion made of a cold-worked titanium alloy containing 2% to 4% by weight of aluminum, 1.5% to 3.5% by weight of vanadium and balance titanium. The engine valve suitable for use as an intake valve has a head portion made of a cast titanium alloy containing 2% to 7% by weight of aluminum, 3% to 20% by weight of vanadium and balance titanium. Moreover, an exhaust engine valve has a head portion made of a cast titanium alloy containing 5% to 10% by weight of aluminum and balance titanium.Type: GrantFiled: January 28, 1992Date of Patent: December 8, 1992Assignee: Mitsubishi Materials CorporationInventor: Yoshiharu Mae
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Patent number: 5160554Abstract: An alpha-beta titanium-base alloy, and fastener made therefrom. The alloy has a combination of an ultimate tensile strength of at least 220 ksi with a minimum elongation of 7% in the solution-treated and aged condition. The alloy has a total beta stabilizer content of 15 to 20%, a total alpha stabilizer content of 1.5 to 3.5% and balance titanium. The alloy may have an aluminum equivalence of at least 3.0%, preferably 4.0%. The alloy may have an aluminum content of at least 1.5%. The beta stabilizer element may be at least one vanadium, molybdenum or iron and the alpha stabilizer element may be one or more of aluminum, oxygen, carbon and nitrogen.Type: GrantFiled: August 27, 1991Date of Patent: November 3, 1992Assignee: Titanium Metals CorporationInventors: Paul J. Bania, Roy E. Adams, James Stokes
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Patent number: 5124122Abstract: High strength titanium alloys containing about 45-55% by weight of titanium, about 25-45% by weight of vanadium and 10-20% by weight chromium alloys are disclosed.These latter two components are first alloyed into a master alloy before addition to the titanium resulting in reduced inclusions of vanadium.Type: GrantFiled: August 15, 1989Date of Patent: June 23, 1992Assignee: Teledyne Industries, Inc.Inventor: Chester C. Wojcik
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Patent number: 5124121Abstract: A titanium base alloy with improved superplastic, hot workability, cold workability, and mechanical properties is provided. The alloy has about 4% Al and 2.5% V, with below 0.15% O, with 2% Fe and 2% Mo, 0.85.about.3.15 wt. % Mo, and at least one element from the group of Fe, Ni, Co, and Cr as beta stabilizing elements, and as contributing elements to the lowering of beta transus, finally to the improvement of the superplastic properties, and hot and cold workability, with the grain size of below 5 .mu.m. A method of making thereof is provided with the reheating temperature between beta transus minus 250.degree. C. and beta transus.A method of superplastic forming thereof is provided with the heat treating temperature between beta transus minus 250.degree. C. and beta transus.Type: GrantFiled: June 24, 1991Date of Patent: June 23, 1992Assignee: NKK CorporationInventors: Atsushi Ogawa, Kuninori Minakawa, Kazuhide Takahashi
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Patent number: 5112415Abstract: There is disclosed an engine valve of titanium alloy having a stem portion made of a cold-worked titanium alloy containing 2% to 4% by weight of aluminum, 1.5% to 3.5% by weight of vanadium and balance titanium. The engine valve suitable for use as an intake valve has a head portion made of a cast titanium alloy containing 2% to 7% by weight of aluminum, 3% to 20% by weight of vanadium and balance titanium. Moreover, an exhaust engine valve has a head portion made of a cast titanium alloy containing 5% to 10% by weight of aluminum and balance titanium.Type: GrantFiled: January 17, 1991Date of Patent: May 12, 1992Assignee: Mitsubishi Materials CorporationInventor: Yoshiharu Mae
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Patent number: 5068003Abstract: A wear-resistant titanium alloy containing titanium carbides which are crystallized and/or precipitated and are dispersed in the .beta.-phase matrix is disclosed. The alloy may further comprise .alpha.-phase and/or additional hard particles dispersed in the .beta.-phase matrix.Type: GrantFiled: November 9, 1989Date of Patent: November 26, 1991Assignee: Sumitomo Metal Industries, Ltd.Inventors: Wataru Takahashi, Yoshihito Sugimoto, Mutsuo Nakanishi, Yoshiaki Shida, Minoru Okada
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Patent number: 5032189Abstract: Near-alpha and alpha+beta titanium alloy components are produced by a process which comprises the steps of forging an alloy billet to a desired shape at a temperature at or above the beta-transus temperature of the alloy to provide a forged component, heat treating the forged component at a temperature approximately equal to the beta-transus temperature of the alloy, cooling the component at a rate in excess of air cooling to room temperature, annealing the component at a temperature in the approximate range of 10 to 20% below said beta-transus temperature for about 4 to 36 hours, and air cooling the component to room temperature.Type: GrantFiled: March 26, 1990Date of Patent: July 16, 1991Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Daniel Eylon, Francis H. Froes
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Patent number: 4943412Abstract: An alpha-beta titanium base alloy comprising, in weight percent, 0.04 to 0.10 silicon and 0.03 to 0.08 carbon, characterized by an increase in strength over that of the alloy lacking the silicon and carbon additions. The alloy may additionally comprise 6 aluminum, 4 vanadium, up to 0.3 iron and up to 0.25 oxygen.Type: GrantFiled: May 1, 1989Date of Patent: July 24, 1990Assignee: TimetInventors: Paul J. Bania, Warren M. Parris
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Patent number: 4941928Abstract: A method of fabricating intermetallic compounds of TiAl and TiAl.sub.3 into shapes including a foil utilizing an arc spray process in which bimetalic titanium aluminum or low titanium aluminum and low aluminum titanium wires of the proper proportions are used to form an intermetallic compound overlay, which is densified to form the shape.Type: GrantFiled: December 30, 1988Date of Patent: July 17, 1990Assignee: Westinghouse Electric Corp.Inventors: Robert L. Ammon, Raymond W. Buckman, George P. Sabol
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Patent number: 4923513Abstract: A carefully controlled amount of hydrogen is diffused into titanium or its alloys at an elevated temperature above the transformation temperature. After the elevated temperature is maintained for an approprate duration of time, eutectoid transformation is performed in an inert atmosphere, again for an appropriate period of time, during which or alternatively after which the hydrogen is removed and the metal cooled to room temperature. A sintered titanium alloy component of the type intended for use as a joint replacement subjected to such a treatment displays a fatigue strength which is noticeably improved over a similar article with an equiaxed or lamellar microstructure.Type: GrantFiled: April 21, 1989Date of Patent: May 8, 1990Assignee: Boehringer Mannheim CorporationInventors: Paul Ducheyne, David H. Kohn
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Patent number: 4919886Abstract: A titanium alloy comprising about 20 to 30 atomic percent (a/o) aluminum, about 3 to 5 a/o niobium, about 3 to 5 a/o vanadium, and about 3 to 5 a/o molybdenum, balance titanium. The alloy can be dispersion strengthened by the addition of small amounts, i.e. up to about 1 a/o of sulfur or rare earth dispersoids, such as Ce, Er or Y.Type: GrantFiled: April 10, 1989Date of Patent: April 24, 1990Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Ganapathy Venkataraman, Francis H. Froes
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Patent number: 4902474Abstract: A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be a highly desirable effective aluminum concentration by addition of gallium according to the approximate formula Ti.sub.52-47 Al.sub.42-46 Ga.sub.3-7.Type: GrantFiled: January 3, 1989Date of Patent: February 20, 1990Assignee: General Electric CompanyInventors: Shyh-Chin Huang, Michael F. Xavier
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Patent number: 4898624Abstract: High performance Ti-6A1-4V alloys skewed with oxygen and nitrogen and useful as impellers are provided and a process for their preparation.Type: GrantFiled: June 7, 1988Date of Patent: February 6, 1990Assignee: Aluminum Company of AmericaInventors: Amiya K. Chakrabarti, George W. Kuhlman, Jr., Stanley R. Seagle
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Patent number: 4897127Abstract: A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and niobium to have what has been found to be a highly desirable effective aluminum concentration by addition of a combination of manganese and niobium according to the approximate formula Ti.sub.52-42 Al.sub.46-50 Nb.sub.1-5 Mn.sub.1-3.Type: GrantFiled: October 3, 1988Date of Patent: January 30, 1990Assignee: General Electric CompanyInventor: Shyh-Chin Huang
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Patent number: 4889170Abstract: Herein disclosed are a high-strength Ti alloy material having improved workability which contains 2-5% Al, 5-12% V and 0.5-8% Mo (the percents being on a weight basis) and which satisfies the relation: 14%.ltoreq.1.5.times.(V content)+(Mo content).ltoreq.21%, with the balance being Ti and incidental impurities, and a process for producing such high -strength Ti alloy material.The process comprises: preparing a Ti alloy ingot having the above specified composition; hot working the ingot at a temperature wihtin the range of 600.degree.-950.degree. C.; subjecting the work to solid solution treatment at a temperature in the range of 700.degree.-800.degree. C.; and age-hardening the work at a temperatrue between 300.degree. and 600.degree. C. The reesulting Ti alloy material is suitable for use in the fabrication of parts of aircraft where high specific strength and heat resistance are required.Type: GrantFiled: June 13, 1986Date of Patent: December 26, 1989Assignee: Mitsubishi Kinzoku Kabushiki KaishaInventors: Yoshiharu Mae, Tsutomu Oka, Atsushi Hirano
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Patent number: 4857268Abstract: A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be a highly desirable effective aluminum concentration by addition of vanadium and rapid solidification from the melt according to the approximate formula Ti.sub.49 Al.sub.48 V.sub.3.Type: GrantFiled: December 28, 1987Date of Patent: August 15, 1989Assignee: General Electric CompanyInventors: Shyh-Chin Huang, Michael F. X. Gigliotti, Jr.
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Patent number: 4842817Abstract: A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be highly desirable effective aluminum concentration by addition of tantalum according to the approximate formula Ti.sub.48 Al.sub.48 Ta.sub.4.Type: GrantFiled: December 28, 1987Date of Patent: June 27, 1989Assignee: General Electric CompanyInventors: Huang Shyh-Chin, Michael F. X. Gigliotti, Jr.
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Patent number: 4830823Abstract: Dental titanium alloy castings have physical properties equal to physical characteristics incidental to a Ti-6Al-4 V alloy can be obtained by casting titanium alloys containing aluminium at a ratio of 1.5 to 4.0% by weight and vanadium at a ratio of 1.0 to 3.0% by weight.Type: GrantFiled: September 18, 1987Date of Patent: May 16, 1989Assignee: Ohara Co., Ltd.Inventor: Seizo Nakamura
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Patent number: 4810465Abstract: A free-cutting Ti alloy is disclosed. The basic alloy composition of this free-cutting Ti alloy essentially consists of at least one of S: 0.001-10%, Se: 0.001-10% and Te: 0.001-10%; REM: 0.01-10%; and one or both of Ca: 0.001-10% and B: 0.005-5%; and the balance substantially Ti. The Ti alloy includes one or more of Ti-S (Se, Te) compounds, Ca-S (Se, Te) compounds, REM-S (Se, Te) compounds and their complex compounds as inclusions to improve machinability. Some optional elements can be added to above basic composition.Also disclosed are methods of producing the above free-cutting Ti alloy and a specific Ti alloy which is a particularly suitable material for connecting rods.Type: GrantFiled: February 9, 1987Date of Patent: March 7, 1989Assignee: Daido Tokushuko Kabushiki KaishaInventors: Atsuyoshi Kimura, Sadayuki Nakamura
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Patent number: 4802930Abstract: A process for the production of seamless titanium alloy tubing is disclosed in which solution annealing for all intermediate operations are performed in an air atmosphere furnace, followed either by water or room temperature air quench in order to achieve cooling within the requisite five (5) minutes. Preferably final aging is performed in a vacuum furnace to avoid surface contamination which would ordinarily require subsequent removal by pickling. This produced a finer grained product, which was more susceptible to defect detection by ultrasonic testing, which produced an optimum combination of strength and ductility, and which showed more uniform response to aging between different lots and tube sizes.Type: GrantFiled: October 23, 1987Date of Patent: February 7, 1989Assignee: Haynes International, Inc.Inventor: Harold D. Kessler
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Patent number: 4788035Abstract: A titanium aluminide base composition is provided which has increased tensile strength, ductility and rupture life due to the addition of tantalum coupled with optional additions of vanadium and columbium.Type: GrantFiled: June 1, 1987Date of Patent: November 29, 1988Assignee: General Electric CompanyInventors: Michael F. X. Gigliotti, Jr., Brian J. Marquardt
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Patent number: 4780374Abstract: A malleable composite brazing alloy comprises a pair of outer layers formed of a titanium-aluminum-vanadium alloy and an inner layer formed of a copper-nickel alloy, the layers being bonded to each other by rolling.Type: GrantFiled: April 4, 1988Date of Patent: October 25, 1988Assignee: GTE Products CorporationInventor: Howard Mizuhara
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Patent number: 4745977Abstract: A method for resisting corrosion while conducting a flow of hot corrosive geothermal fluid, particularly brine, comprises flowing the fluid through fluid flow conducting elements, such as production pipe and fittings formed from a metastable beta titanium-base alloy. Preferably the element is formed of a beta and alpha titanium-base alloy formed by heating a particular composition to form a metastable beta titanium matrix and then heat treating the matrix to increase the tensile strength of the matrix by at least about 10,000 psi with a total minimum ultimate tensile strength being about 170,000 psi. The particular composition is comprised essentially of between about 2 and about 10 weight percent of one or more beta eutectoid elements selected from the group consisting of iron, manganese, chromium and cobalt, with weight percentage limits in each such individual element being respectively about 5, about 5.5, about 9 and about 4.Type: GrantFiled: April 12, 1985Date of Patent: May 24, 1988Assignee: Union Oil Company of CaliforniaInventors: William W. Love, Carl J. Cron
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Patent number: 4716020Abstract: The high temperature strength to density ratio of titanium aluminum niobium alloys of the Ti.sub.3 Al (alpha two) type is increased when molybdenum is added. New alloys contain by atomic percent 25-27 aluminum, 11-16 (niobium+molybdenum), 1-4 molybdenum, balance titanium. When vanadium replaces up to 3.5% molybdenum a lighter weight alloy is produced. The new alloys have higher elastic modulus and higher creep strength to density ratio than alloys without molybdenum.Type: GrantFiled: September 27, 1982Date of Patent: December 29, 1987Assignee: United Technologies CorporationInventors: Martin J. Blackburn, Michael P. Smith
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Patent number: 4661316Abstract: A heat-resistant alloy comprising an alloy based on an intermetallic compound TiAl composed of 60 to 70% by weight of titanium and 30 to 36% by weight of aluminum, and 0.1 to 5.0% by weight of manganese.Type: GrantFiled: July 30, 1985Date of Patent: April 28, 1987Assignee: National Research Institute for MetalsInventors: Kenki Hashimoto, Haruo Doi, Tsujimoto Tokuzou, Nakano Osamu, Nobuki Minoru
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Patent number: 4639281Abstract: A titanium alloy has greatly increased specific strength and increased thermostability. The alloy consists of a titanium matrix in which fibrous dispersoids are formed in situ. The dispersoids are rod and/or plate shaped and have a diameter or depth of about 0.1-0.5 microns and an aspect ratio of about 5-10. A typical alloy has the composition A-X where A is titanium or titanium alloy and X is boron, carbon, nitrogen, mixtures thereof, or mixtures with silicon.Type: GrantFiled: December 2, 1983Date of Patent: January 27, 1987Assignee: McDonnell Douglas CorporationInventors: Shankar M. Sastry, James E. O'Neal, Tzy C. Peng
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Patent number: 4437888Abstract: Alloys comprising titanium and aluminum, or titanium, aluminum and at least one of the metals M, wherein M is vanadium, zirconium, chromium, niobium, tantalum and/or iron, are facilely prepared by reducing an alkali metal fluotitanate, or coreducing admixture of an alkali metal fluotitanate and at least one halide of a metal M, with aluminum, in the presence of an alkali metal oxide reactive flux, either Na.sub.2 O and/or K.sub.2 O; next solubilizing with water the fluorine compounds of reduction/coreduction which are in admixture of reduction/coreduction with dispersion of the aforesaid metals in metallic state; separating said dispersion of metals in metallic state from said admixture of reduction/coreduction; and then alloying by melting and cooling said separated dispersion of metals in metallic state.Type: GrantFiled: May 5, 1982Date of Patent: March 20, 1984Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Gilbert Jecker
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Patent number: 4390498Abstract: A new high concentration titanium-boron additive alloy for addition to molten metals is provided comprising about 60% to 78% titanium, about 1.3% to 4.5% boron and the balance iron with residual impurities in ordinary amounts. Aluminum, zirconium, silicon and manganese may be present in an amount up to about 20% so long as the ratio of titanium to boron remains in the range.Type: GrantFiled: July 17, 1981Date of Patent: June 28, 1983Inventor: Leon A. Luyckx
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Patent number: H887Abstract: A titanium alloy comprising about 15 to 25 atomic percent (a/o) aluminum, about 0.05 to 12 a/o of at least one beta eutectoid stabilizing element and about 4 to 12 a/o of at least one beta isomorphous stabilizing element, balance titanium. The beta eutectoid element is at least one of Cu, Ni, Cr, Er, Y, Ce, Si, B or C. The beta isomorphous stabilizing element is Nb or a mixture of Nb with Ta, Mo or V, wherein the Nb can be replaced by Ta, Mo or V up to about half of the stated quantity.The presently preferred amounts of the beta eutectoid stabilizing elements are as follows: Cu, Ni or Cr, about 4.50 to 12.0 a/o; Si, B or C, about 0.70 to 5.0 a/o; Er, Y or Ce, about 0.05 to 0.25 a/o.Type: GrantFiled: February 7, 1990Date of Patent: February 5, 1991Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Ganapathy Venkataraman, Francis H. Froes