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| Number | Title | Issue Date |
| 7425765 | Zinc-aluminum solder alloy A high melting point solder alloy superior in oxidation resistance, in particular a solder alloy provided with both a high oxidation resistance and high melting point suitable for filling fine through holes of tens of microns in diameter and high aspect ratios and f... | 09/16/2008 |
| 7214281 | Aluminum-zinc-magnesium-copper alloy extrusion An aluminum alloy extrusion product having improved strength and fracture toughness, the aluminum base alloy comprised of 1.95 to 2.5 wt. % Cu, 1.9 to 2.5 wt. % Mg, 8.2 to 10 wt. % Zn, 0.05 to 0.25 wt. % Zr, max. 0.15 wt. % Si, max. 0.15 wt. % Fe, max. 0.1 wt. % Mn,... | 05/08/2007 |
| 7048815 | Method of making a high strength aluminum alloy composition The present invention provides a method of making a 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 maint... | 05/23/2006 |
| 7018489 | Artificial aging control of aluminum alloys A method of artificially aging an aluminum alloy product to achieve a property in the product having the steps of aging the product to achieve the property by heating the product over an aging period, the aging period including a time period where the product is in ... | 03/28/2006 |
| 6669792 | Process for producing a cast article from a hypereutectic aluminum-silicon alloy A process for making a cast article from an aluminum alloy includes first casting an article from an alloy having the following composition, in weight percent: In this alloy the ration of Si:Mg is 15-35, and the ratio of Cu:Mg is 4-15. After an article is... | 12/30/2003 |
| 6569271 | Aluminum alloys and methods of making the same A process for thermally treating an article made from an aluminum alloy. The process comprises providing the aluminum alloy that consists essentially of from about 5.7 to about 6.7 wt. % of zinc, less than 2.2 wt. % copper, less than 4.2 wt. % of the tota... | 05/27/2003 |
| 6565684 | Manufacturing process for a hollow pressure vessel made of AlZnMgCu alloy A process for manufacturing a hollow pressure vessel, in which a billet is cast from an alloy with a composition in % by weight, Zn=6.25-8.0, Mg=1.2-2.2, Cu=1.7-2.8, Fe | 05/20/2003 |
| 6528183 | Clad aluminum alloy sheet for aircraft structural parts Clad sheet made up of a core sheet and a cladding layer on one or two core sheet surfaces. The core sheet is formed of an alloy having the composition (% by weight) Si: 0.7-1.3, Mg: 0.6-1.2, Cu: 0.5-1.1, Mn: 0.15-1.0, Zn | 03/04/2003 |
| 6524410 | Method for producing high strength aluminum alloy welded structures The present invention relates to a method for fabricating lightweight alloy feedstock for welded structures. Specifically, the method for producing the tubular stock proposed in the present invention enables a bicycle manufacturer to readily weld a lightw... | 02/25/2003 |
| 6258463 | Anodized cryogenically treated aluminum The invention relates to a process for producing anodic coatings with superior corrosion resistance and other properties on aluminum and aluminum alloy surfaces by cryogenically treating the aluminum prior to anodizing. The invention also relates to the a... | 07/10/2001 |
| 5954897 | Die-casting aluminum base alloy for a bearing of ball joint apparatus, heat treatment thereof and ball joint apparatus using the same A die-casting aluminum base alloy consisting of, by weight %, Zn:10~25%, Si:6~10%, Cu:0.5~3.0%, Mn:0.1~0.5%, Mg:0.02~0.08%, Fe:less than 1.3%, and the rest of Al and unavoidable impurity. This alloy can be heat treated at low temperature from 260° C. to 450° C., ... | 09/21/1999 |
| 5865911 | Aluminum alloy products suited for commercial jet aircraft wing members Rolled plate products up to 6 inches thick or more and other products in an aluminum alloy consisting essentially of about 5.2 to 6.8% zinc, 1.7 to 2.4% copper, 1.6 to 2% magnesium, 0.03 to 0.3% zirconium, balance substantially aluminum and incidental ele... | 02/02/1999 |
| 5858134 | Process for producing alsimgcu alloy products with improved resistance to intercrystalline corrosion The invention concerns a process for the production of rolled or extruded products of high strength AlSiMgCu aluminium alloy with good intergranular corrosion resistance, comprising the following steps: casting a plate or billet with the following composition ... | 01/12/1999 |
| 5810952 | Lead-free 6000 series aluminum alloy A process for making an essentially lead-free screw machine stock alloy, comprising the steps of providing a cast aluminum ingot having a composition consisting essentially of about 0.55 to 0.70 wt. % silicon, about 0.15 to 0.45 wt. % iron, about 0.30 to ... | 09/22/1998 |
| 5690758 | Process for the fabrication of aluminum alloy sheet having high formability The invention relates to a fabrication process to obtain aluminum alloy sheet having high formability. In this process, an alloy obtained by alloying Al with Si, Mg, Cu, Mn and Fe, and one or more elements taken from the group of Cr, Zn, Zr and Ti, is sub... | 11/25/1997 |
| 5643372 | Process for the desensitisation to intercrystalline corrosion of 2000 and 6000 series Al alloys and corresponding products An improvement to a process for treating an aluminum alloy for the series AA 2000 or AA 6000 comprising solution heat treating, quenching and natural or artificial aging, in which conventional heat solution heat treating is defined as solution heat treati... | 07/01/1997 |
| 5616189 | Aluminum alloys and process for making aluminum alloy sheet An alloy of aluminum containing magnesium, silicon and optionally copper in amounts in percent by weight falling within one of the following ranges: (1) 0.4ࣘMgࣘ0.8, 0.2ࣘSiࣘ0.5, 0.3ࣘCuࣘ3.5; (2) 0.8ࣘMgࣘ1.4, 0.2ࣘSiࣘ0.5, Cuࣘ2.5; and (3) 0.4à£... | 04/01/1997 |
| 5560789 | 7000 Alloy having high mechanical strength and a process for obtaining it AA 7000 series alloys having high mechanical strength and a process for obtaining them. The alloys contain, by weight, 7 to 13.5% Zn, 1 to 3.8% Mg, 0.6 to 2.7% Cu, 0 to 0.5% Mn, 0 to 0.4% Cr, 0 to 0.2% Zr, others up to 0.05% each and 0.15% total, and rema... | 10/01/1996 |
| 5496426 | Aluminum alloy product having good combinations of mechanical and corrosion resistance properties and formability and process for producing such product An improved high strength aluminum alloy product having good combinations of strength, toughness, corrosion resistance and the ability to be subjected in sheet or strip form to roll forming or shaping operations to produce elongate stringer or other aeros... | 03/05/1996 |
| 5455003 | Al-Cu-Li alloys with improved cryogenic fracture toughness A method is disclosed for the production of aluminum-copper-lithium alloys that exhibit improved strength and fracture toughness at cryogenic temperatures. Improved cryogenic properties are achieved by controlling the composition of the alloy, along with ... | 10/03/1995 |
| 5413650 | Ductile ultra-high strength aluminium alloy components The mechanical properties of aluminium alloy extrusion in a specified transverse direction are improved by upsetting the extrusion billet in at least one direction chosen with reference to the specified transverse direction. For example, the extrusion bil... | 05/09/1995 |
| 5383986 | Method of improving transverse direction mechanical properties of aluminum-lithium alloy wrought product using multiple stretching steps Strength and ductility for a aluminum-lithium alloy wrought product in the transverse direction is improved by subjecting these types of alloys to improved T8 temper practice. The wrought product, after solution heat treating and quenching is subjected to... | 01/24/1995 |
| 5312498 | Method of producing an aluminum-zinc-magnesium-copper alloy having improved exfoliation resistance and fracture toughness A method of producing an aluminum-based alloy product having improved exfoliation resistance and fracture toughness which comprises providing an aluminum-based alloy composition consisting essentially of about 5.5-10.0% by weight of zinc, about 1.75-2.6% ... | 05/17/1994 |
| 5306359 | Method and apparatus for heat treating A method for heat treating an aluminum part is provided. The method includes heat treating the aluminum alloy part with direct radiation from a source of infrared energy until the part attains a desired state of heat treatment. The method and apparatus fu... | 04/26/1994 |
| 5277719 | Aluminum alloy thick plate product and method Disclosed is a method of producing a forged and rolled Al-Zn-Cu-Mg alloy plate product having improved fatigue properties in the long transverse direction. The method comprises providing a body of an Al-Zn-Cu-Mg alloy, working said body by a forging opera... | 01/11/1994 |
| 5273594 | Delaying final stretching for improved aluminum alloy plate properties The present invention provides a method for improving aluminum alloy plate product properties by delaying final stretching of the plate product. During processing of the product, a time interval or intentional delay is provided between the final cold roll... | 12/28/1993 |
| 5221377 | Aluminum alloy product having improved combinations of properties An alloy product having improved combinations of strength, density, toughness and corrosion resistance, said alloy product consisting essentially of about 7.6 to 8.4% zinc, about 1.8 to 2.2% magnesium, about 2 to 2.6% copper and at least one element selec... | 06/22/1993 |
| 5108520 | Heat treatment of precipitation hardening alloys An aging process for solution-heat-treated, precipitation hardening metal alloy includes first underaging the alloy, such that a yield strength below peak yield strength is obtained, followed by higher aging for improving the corrosion resistance of the a... | 04/28/1992 |
| 5035754 | Heat treating method for high strength aluminum alloy A heat treating method for a high strength aluminum alloy comprising the steps of: solution heat treating of an aluminum alloy consisting essentially of about 3 to 9 wt. % Zn, 1 to 6 wt. % Mg, 1 to 3 wt. % Cu, at least one element selected from the group ... | 07/30/1991 |
| 5019178 | Aluminum-silicon alloy article and method for its production A squeeze formed aluminum-silicon cylinder liner for an internal combustion engine is produced from a melt consisting essentially of the following composition by weight: silicon 14% to 16%, copper 1.9% to 2.2%, nickel 1.0% to 1.4%, magnesium of 0.4% to 0.... | 05/28/1991 |
| 4999061 | Low temperature underaging of lithium bearing alloys and method thereof The combination of strength and fracture toughness properties of aluminum-lithium alloys are significantly enhanced by underaging the alloys at temperatures ranging from 200° F. to below 305° F. for relatively long periods of time.... | 03/12/1991 |
| 4929283 | Vapor phase artificial aging of metal alloys using fluorochemicals Artificial aging of metal alloys in the process of precipitation hardening is performed in the elevated temperature vapor of a perfluorochemical to reduce temperature fluctuations, preserve alloy integrity and avoid environmentally detrimental process con... | 05/29/1990 |
| 4897125 | Method of heat treatment of AL-based alloys containing Li and the product obtained by the method The invention concerns a method for final heat treatment tempering at Al alloys containing Li and at least one other major element selected from the group Cu, Mg and Zn, as well as possible minor elements such as Zr, Mn, Cr, Ni, Hf, Ti and Be, in addition... | 01/30/1990 |
| 4867805 | Superplastic aluminum alloys, alloy processes and component part formations thereof Improved superplastic aluminum alloys are formulated to contain less than 0.05 weight percent each of iron and silicon based on the total weight of the superplastic aluminum alloy. Advantageously these two elements are present at levels of 0.03 weight per... | 09/19/1989 |
| 4863528 | Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same There is disclosed a method for producing an aluminum alloy product and the resulting product having improved combinations of strength and corrosion resistance. The method includes providing an alloy consisting essentially of about 6-16% zinc, about 1.5-4... | 09/05/1989 |
| 4861391 | Aluminum alloy two-step aging method and article A method for thermally treating an article made from an aluminum alloy having a first temperature at which solute atoms cluster to yield nuclei for the formation and growth of strengthening precipitates, and a second higher temperature at which the streng... | 08/29/1989 |
| 4832758 | Producing combined high strength and high corrosion resistance in Al-Zn-MG-CU alloys The method of thermally treating an article composed of an alloy consisting essentially of aluminum, 4 to 8% zinc, 1.5 to 3.5% magnesium, 1 to 2.5% copper, and at least one element selected from the group consisting of 0.05 to 0.3% chromium, 0.1 to 0.5 ma... | 05/23/1989 |
| 4828631 | High strength aluminum alloy resistant to exfoliation and method of making A method is provided for producing a high strength aluminum alloy characterized by improved resistance to exfoliation. The method comprises providing an aluminum-base alloy comprising 5.9 to 8.2 wt. % zinc, 1.5 to 4.0 wt. % magnesium, 1.5 to 3.0 wt. % cop... | 05/09/1989 |
| 4812178 | Method of heat treatment of Al-based alloys containing Li and the product obtained by the method The invention concerns a method for final heat treatment ageing of Al alloys optionally containing Li and at least one other major element selected from the group Cu, Mg and Zn, as well as possible minor elements such as Zr, Mn, Cr, Ni, Hf, Ti and Be, in ... | 03/14/1989 |
| 4797165 | Aluminum-lithium alloys having improved corrosion resistance and method An aluminum base alloy wrought product having improved corrosion resistance in addition to combinations of strength and toughness. The product comprises 2.2 to 3.0 wt. % Li, 0.4 to 2.0 wt. % Mg, 0.2 to 1.6 wt. % Cu, 0 to 2.0 wt. % Mn, 0.5 wt. % max. Fe, 0... | 01/10/1989 |
