초록 ▼

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 imp

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.

대표청구항 ▼

A method of producing a structural aluminum alloy member comprising the steps of: (a) providing a body of aluminum base 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,

A method of producing a structural aluminum alloy member comprising the steps of: (a) providing a body of aluminum base 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; (b) heating said body to a temperature in the range of 1020°to 1080°F., said temperature being within 50°F. of the solidus temperature for said alloy; (c) working said body to produce a wrought aluminum product; (d) solution heat treating said wrought aluminum product at a temperature within the range of 1020°to 1080°F.; and (e) quenching said product.