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Class 148/694 - With ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening


Subclass of Class 148 - Metal treatment
Definition: Process which includes a step of ageing, solution treating
No. of patents: 73
Last issue date: 11/18/2008


1    
NumberTitleIssue Date
7452430Method for reforming A1 alloy castings
In reforming mechanical characteristics of a precipitation hardening type Al alloy casting, the Al alloy casting is subjected to a high temperature/high pressure treatment, then the pressure is reduced while maintaining the temperature of the Al alloy casting, and s...
11/18/2008
7214279Al/Cu/Mg/Ag alloy with Si, semi-finished product made from such an alloy and method for production of such a semi-finished product
An Al/Cu/Mg/Mn alloy for the production of semi-finished products with high static and dynamic strength properties has the following composition: 0.3–0.7 wt % silicon (Si), max. 0.15 wt. % iron (Fe), 3.5–4.5 wt % copper (Cu), 0.1–0.5 wt. % manganese (Mn), 0.3â...
05/08/2007
7182825In-line method of making heat-treated and annealed aluminum alloy sheet
A method of making aluminum alloy sheet in a continuous in-line process is provided. A continuously-cast aluminum alloy strip is optionally quenched, hot or warm rolled, annealed or heat-treated in-line, optionally quenched, and preferably coiled, with additional ho...
02/27/2007
7105067Method to increase the toughness of aluminum-lithium alloys at cryogenic temperatures
A method to increase the toughness of the aluminum-lithium alloy C458 and similar alloys at cryogenic temperatures above their room temperature toughness is provided. Increasing the cryogenic toughness of the aluminum-lithium alloy C458 allows the use of alloy C458 ...
09/12/2006
7097719Aluminum alloy product having improved combinations of properties
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 abou...
08/29/2006
7048815Method 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
7037391Heat treatment of age hardenable aluminium alloys utilizing secondary precipitation
The process is for ageing heat treatment of an age-hardenable aluminium alloy which has alloying elements in solid solution. The process includes holding the alloy at an elevated ageing temperature which is appropriate for ageing the alloy to promote precipitation o...
05/02/2006
7029543Process for making aluminum alloy sheet having excellent bendability
A process is described for producing an aluminum alloy sheet having excellent bendability for use in forming panels for automobiles. An aluminum alloy containing 0.50 to 0.75 by weight Mg, 0.7 to 0.85% by weight Si, 0.1 to 0.3% by weight Fe, 0.15 to 0.35% by weight ...
04/18/2006
7025839Heat treatment of age-hardenable aluminum alloys
The heat treatment of an age-hardenable aluminium alloy, having alloying elements in solid solution includes the stages of holding the alloy for a relatively short time at an elevated temperature TA appropriate for ageing the alloy; cooling the alloy from...
04/11/2006
7018489Artificial 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
6994760Method of producing a high strength balanced Al-Mg-Si alloy and a weldable product of that alloy
The present invention relates to a method for producing high strength balanced Al—Mg—Si alloy with an improved fatigue crack growth resistance and a low amount of intermetallics, comprising the steps of a) casting an ingot with the following composi...
02/07/2006
6991689Aluminium-lithium alloys
An aluminum based alloy having a composition within the following ranges, all of the ranges being in weight percent: lithium 2.0 to 2.8, magnesium 0.4 to 1.0, copper 2.0 to 3.0, manganese 0.7 to 1.2, zirconium up to 0.2 and the balance aluminum, save for incidental ...
01/31/2006
6972110Aluminum alloy products having improved property combinations and method for artificially aging same
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 ...
12/06/2005
6959476Aluminum automotive drive shaft
A method for producing aluminum drive shafts from molten aluminum alloy using a continuous caster to cast the alloy into a slab. The method comprises providing a molten aluminum alloy consisting essentially of 0.2 to 0.8 wt. % Si, 0.05 to 0.4 wt. % Cu, 0.45 to 1.2 w...
11/01/2005
6926970Apparatus and method for forming weld joints having compressive residual stress patterns
The welding apparatus and associated method are provided. The welding apparatus includes a welding tool for forming a weld joint along the surface of at least one workpiece. The welding apparatus also includes a compression tool for selectively inducing a layer of r...
08/09/2005
6835254Recrystallization of metal alloy sheet with convection and infrared radiation heating
A method is disclosed for heating a cold worked sheet of superplastically formable metal composition to recrystallize its microstructure to a suitably formable condition and further to heat the sheet to a temperature for an immediate forming operation. The method ut...
12/28/2004
6780259Process for making aluminum alloy sheet having excellent bendability
A process is described for producing an aluminum alloy sheet having excellent bendability for use in forming panels for automobiles. An aluminum alloy containing 0.50 to 0.75 by weight Mg, 0.7 to 0.85% by weight Si, 0.1 to 0.3% by weight Fe, 0.15 to 0.35% by weight ...
08/24/2004
6780525High strength friction stir welding
A precipitation hardened structural assembly is provided, including a first structural member and a second structural member positioned adjacent to the first structural member such that the first and second structural members define an interface therebetween. At lea...
08/24/2004
6692589Aircraft structure element made of an Al-Cu-Mg- alloy
A process for forming a structure element, particularly an lower wing element of an aircraft, manufactured from a rolled, extruded or forged product made of an alloy of composition (% by weight) Cu=4.6-5.3, Mg=0.10-0.50, Mn=0.15-0.45, Si
02/17/2004
6679958Process of aging an aluminum alloy containing magnesium and silicon
An ageing process capable of producing an aluminum alloy with better mechanical properties than possible with traditional ageing procedures. The ageing process employs a dual rate heating technique that comprises a first stage in which the aluminum alloy ...
01/20/2004
6602364Aluminium alloy containing magnesium and silicon
An aluminum alloy and a process for treating the aluminum alloy. The alloy contains 0.5 to 2.5% by weight of an alloying mixture of magnesium and silicon, in which the molar ratio of Mg/Si is 0.70 to 1.25, the alloy optionally containing an additional amo...
08/05/2003
6528183Clad 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
6322647Methods of improving hot working productivity and corrosion resistance in AA7000 series aluminum alloys and products therefrom
Methods of improving the corrosion resistance and hot working productivity of AA7000 series aluminum alloys include, in one mode, the steps of treating a stock material to form a globular microstructure, preferably by a thermal conversion treatment, and s...
11/27/2001
6248193Process for producing an aluminum alloy sheet
A continuously cast and rolled sheet of an aluminum alloy having Mg in a content of 3 to 6% by weight is annealed, followed by strain correction, heat and hold treatment at a given temperature between 240° C. and 340° C. for one hour or more, and slowly...
06/19/2001
6221515Bimetallic strip for a sliding bearing and process for producing said bimetallic strip
A bimetallic strip for a sliding bearing having a sliding strip of an aluminum alloy which is adhered to a steel supporting strip and method of manufacture. The composition of the sliding strip is from 3 to 30% of tin; from 1 to 6% of silicon and the rema...
04/24/2001
6159315Stress relieving of an age hardenable aluminum alloy product
Stress relieving of an age hardenable aluminium alloy product after solution heat treatment and quenching, is carried out by a permanent cold plastic deformation applied by the steps of: (a) applying a stress-relieving cold mechanical stretch to said product, ...
12/12/2000
6136106Process for manufacturing thin pipes
The invention relates to a method for manufacturing thin-walled pipes, which are made of a heat-resistant and wear-resistant aluminum-based material. The method comprises the spray-compacting of a thick-walled pipe made of a hypereutectic aluminum-silicon...
10/24/2000
6129792Corrosion resistant aluminum alloy rolled sheet
A process for fabricating an aluminum alloy rolled sheet particularly suitable for use for an automotive body, the process comprising: (a) providing a body of an alloy comprising: about 0.8 to about 1.5 wt. % silicon, about 0.15 to about 0.65 wt. % magnes...
10/10/2000
6019939Aluminium alloy brazing sheet
Aluminum brazing alloy composition is (in wt. %): Mn 0.7-1.5, Cu 0.5-1.0, Fe not more than 0.4, Si not more than 0.15, Mg up to 0.8, V and/or Cr up to 0.3, Ti up to 0.1, others up to 0.05 each, 0.15 total, balance A1 of at least commercial purity. Improve...
02/01/2000
5961752High strength Mg-Si type aluminum alloy
Disclosed is an improved aluminum base alloy comprising an improved aluminum base alloy comprising 0.2 to 2 wt. % Si, 0.3 to 1.7 wt. % Mg, 0 to 1.2 wt. % Cu, 0 to 1.1 wt. % Mn, 0.01 to 0.4 wt. % Cr, and at least one of the elements selected from the group...
10/05/1999
5948185Method for improving the hemmability of age-hardenable aluminum sheet
An improved method of forming a severe bend or a hem in a sheet of wrought aluminum age-hardened and age-hardenable alloy includes heating the region to be bent or hemmed to a temperature above about 250° C. for a period of seconds and then quenching the...
09/07/1999
5919323Corrosion resistant aluminum alloy rolled sheet
A process for fabricating an aluminum alloy rolled sheet particularly suitable for use for an automotive body, the process comprising: (a) providing a body of an alloy comprising: about 0.8 to about 1.5 wt. % silicon, about 0.15 to about 0.65 wt. % magnes...
07/06/1999
5888320Aluminum alloy having improved damage tolerant characteristics
A method of producing an aluminum product having high formability high fracture toughness, high strength and improved corrosion resistance, the method comprising: (a) providing stock including an aluminum base alloy consisting essentially of about 0.7 to ...
03/30/1999
5865911Aluminum 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
5810949Method for treating an aluminum alloy product to improve formability and surface finish characteristics
A method is disclosed for treating an aluminum alloy product in order to impart a fine grain structure and thereby improve formability and surface finish characteristics. According to this method, the product is first heated to a first temperature high en...
09/22/1998
5785777Method of making an AA7000 series aluminum wrought product having a modified solution heat treating process for improved exfoliation corrosion resistance
A method of producing an AA7000 series aluminum alloy wrought product or plate includes a two step solution heat treating sequence wherein the aluminum plate is subjected to a first solution heat treatment at a first elevated temperature or temperatures f...
07/28/1998
5785776Method of improving the corrosion resistance of aluminum alloys and products therefrom
A method of improving the corrosion properties of an aluminum alloy product containing solid solution alloying elements includes the step of rapidly quenching the alloy product after it has been heated or hot deformed so as to maintain the alloying elemen...
07/28/1998
5728241Heat treatment process for aluminum alloy sheet
A process of producing solution heat treated aluminum alloy sheet material comprises subjecting hot- or cold-rolled aluminum alloy sheet to solution heat treatment followed by quenching and, before substantial age hardening has taken place, subjecting the...
03/17/1998
5690758Process 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
5662750Method of manufacturing aluminum articles having improved bake hardenability
A method of producing an aluminum article comprising the steps of: (a) providing stock including an aluminum alloy comprising about 1.0 to 1.3 wt.% silicon, about 0.40 to 0.80 wt.% magnesium, about 0.02 to 0.20 wt.% of an element selected from the group c...
09/02/1997
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