Patent ID: 6562155
Filing Date: 2003-05-13
Classification: C22C,Y10S

Abstract:
A process for producing an aluminum alloy product consisting essentially of the steps of:a) preparing an aluminum alloy having a composition consisting essentially of, in weight percent relative to the aluminum alloy produced, 0.5 or less Cu, 5.0 to 10.0 Si, 0.2 to 0.7 Mg, 0.35 or less Zn, 0.55 or less Fe, 0.5 or less Mn, 0.005 to 0.5 Ti, and a balance of aluminum; b) introducing strain into the aluminum alloy by molding by flask-assisted cold forging at a strain percentage of 10 to 40%, and at a temperature of 200Â° C. or less to thereby form an intermediate alloy product; and c) heat-treating the intermediate alloy product at a temperature in a range of 576 to 585Â° C. to convert said intermediate alloy product to the aluminum alloy product having a structure including generally uniformly spheroidized primary crystals.