Patent ID: 6630039
Filing Date: 2003-10-07
Classification: C22F

Abstract:
A method for extruding an aluminum base alloy extruded product, wherein the aluminum alloy is selected selected from the group consisting of Aluminum Association 2000 series, 5000 series, and 7000 series alloy, comprising:(a) providing a body of an aluminum base alloy; (b) homogenizing said body at an elevated temperature not exceeding its eutectic temperature for a sufficient period of time to provide a homogeneous distribution of the readily soluble alloy elements, (c) rapidly cooling said body; (d) reheating said body to a reheat temperature of at least 700Â° F. for a period of at least 0.5 hours; (e) extruding said body from said reheat temperature; (f) solution heat treating the said body; and (g) quenching and aging said body.