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AssigneeAluminum Company of America
InventorBom K. Park
Estimating the term…
Improved aluminum alloy products are fabricated from an improved alloy broadly containing 0.4 to 1.2% silicon, 0.5 to 1.3% magnesium, 0.6 to 1.1% copper and 0.1 to 1% manganese. The alloy is treated at very high temperatures, approaching the solidus or initial melting temperature, to provide the improved performance. Thereafter, the alloy is shaped as by rolling, extruding, forging and other known aluminum wrought product-producing operations. In the solution heat treated, quenched and artificially aged temper products so produced exhibit very high strength in comparison with 6XXX aluminum alloys, together with very high toughness and impact and dent resistance along with substantial corrosion resistance properties. In addition, the artificial aging response of the improved products enables use of high temperature, low cost aging treatments without risk of overshooting or undershooting the required or desired properties.
In a method for producing a wrought aluminum alloy product, said method including solution heat treating and quenching, the improvement wherein:
A method of producing a structural aluminum alloy member comprising the steps of:
In the method of producing a sports racket frame wherein elongate aluminum stock is shaped into an arcuate hoop, said hoop being adapted for tensioning string members across its opening for striking a projectile, the improvement wherein said elongate aluminum stock is provided as an alloy consisting essentially of 0.4 to 1.2% silicon, 0.5 to 1.3% magnesium, the amount of magnesium exceeding the amount of silicon by 0.1 to 0.4%, from above 0.6% to 1.1% copper, 0.1 to 1% manganese, not more than 0.6% iron, the balance being essentially aluminum and incidental elements and impurities, said stock being in the condition resulting from operations comprising hot working, solution heat treating and quenching and including:
In the method of producing a hollow elongate aluminum product wherein elongate hollow aluminum stock is shaped by tapering into an elongate hollow member including a tapered portion along its length, the improvement wherein said elongate aluminum stock is provided as an alloy consisting essentially of 0.4 to 1.2% silicon, 0.5 to 1.3% magnesium, the amount of magnesium exceeding the amount of silicon by 0.1 to 0.4%, from above 0.6% to 1.1% copper, 0.1 to 1% manganese, not more than 0.6% iron, the balance being essentially aluminum and incidental elements and impurities, said stock being in the condition resulting from operations comprising hot working, solution heat treating and quenching and including:
In a method for producing a shaped vehicular panel wherein a wrought aluminum product is formed to provide said panel, the improvement wherein said product is provided as an alloy consisting essentially of 0.4 to 1.2% silicon, 0.5 to 1.3% magnesium, the amount of magnesium exceeding the amount of silicon by 0.1 to 0.4%, from above 0.6% to 1.1% copper, 0.1 to 1% manganese, not more than 0.6% iron, the balance being essentially aluminum and incidental elements and impurities, said product being in the condition resulting from operations comprising working into a wrought product, solution heat treating and quenching and including a heating operation to a temperature of 1020.degree. to 1080.degree. F., said temperature being within 50.degree. F. of the solidus temperature for said alloy, said product in the naturally aged condition exhibiting high strength and formability and good resistance to corrosion, said product in artificially aged condition exhibiting high strength, tear toughness, notch-toughness and impact resistance together with good resistance to corrosion, said product being capable of stable yield strength response to artificial aging treatment at temperatures above 360.degree. F. for time periods of from about 2 hours or less up to 15 hours or more.
A wrought aluminum alloy product composed of an alloy consisting essentially of 0.4 to 1.2% silicon, 0.5 to 1.3% magnesium, the amount of magnesium exceeding the amount of silicon by 0.1 to 0.4%, from above 0.6% to 1.1% copper, 0.1 to 1% manganese, not more than 0.6% iron, the balance being essentially aluminum and incidental elements and impurities, said product being in the condition resulting from operations comprising solution heat treating and quenching and including a heating operation to a temperature of 1020.degree. to 1080.degree. F., said temperature being within 50.degree. F. of the solidus temperature for said alloy, said product in the naturally aged condition exhibiting high strength and formability and good resistance to corrosion, said product in artificially aged condition exhibiting high strength, tear toughness, notch-toughness and impact resistance together with good resistance to corrosion, said product being capable of stable yield strength response to artificial aging treatment at temperatures above 360.degree. F. for time periods of from about 2 hours or less up to 15 hours or more.
Dependencies are inferred from the claim text.