Method for producing aluminum alloy extruded material

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United States of America Patent

PATENT NO 11827967
APP PUB NO 20200270729A1
SERIAL NO

16796973

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Abstract

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A method for producing an aluminum alloy extruded material includes: subjecting, to extrusion processing, a casted billet obtained from an aluminum alloy containing 6.0 to 8.0% by mass of Zn, 1.50 to 3.50% by mass of Mg, 0.20 to 1.50% by mass of Cu, 0.10 to 0.25% by mass of Zr, 0.005 to 0.05% by mass of Ti, 0.3% by mass or less of Mn, 0.25% by mass or less of Sr, contents of Mn, Zr and Sr being 0.10 to 0.50% by mass, with the balance being Al and inevitable impurities to obtain an extruded material; cooling the extruded material, immediately after the extrusion processing, to 100° C. or less at a cooling rate of 50 to 750° C./min; then subjecting the extruded material to a heat treatment at 110 to 270° C. and subjecting the extruded material to plastic working within a prescribed time after the heat treatment.

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Patent Owner(s)

Patent OwnerAddress
AISIN KEIKINZOKU CO LTD12-3 NAGONOE IMIZU-SHI TOYAMA 934-8588

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shibata, Karin Oyabe, JP 16 9
Yoshida, Tomoo Toyama, JP 17 42

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