Al--Mg based alloy sheets with good press formability

Details Al--Mg based alloy sheets with good press formability Al--Mg based alloy sheets with good press formability

1999-08-26

2000-09-12

Wyszomierski, George

Metal treatment

Stock

Aluminum base

148440, C22C 2106, C22C 2108

Patent

active

061172529

ABSTRACT:
By careful control of composition and processing, Al--Mg based alloy sheets with preferred grain sizes and crystallographic textures that result in good press formability are disclosed. The Al--Mg alloy preferably contains 2-6 wt % Mg, and at least 0.03 wt % of at least one element selected from Fe, Mn, Cr, Zr, and Cu. The crystallographic texture is comprised of grains with a volume fraction in a range of about 5% to 20% in the CUBE orientation {100} <001>, a volume fraction in a range of about 1% to 5% in the GOSS orientation {110} <001>, a volume fraction in a range of about 1% to 10% in each of the BRASS orientation {110} <112>, S orientation {123} <634>, and COPPER orientation {112} <111>, wherein the grain size is in a range of about 20 to 70 .mu.m.

REFERENCES:
patent: 3306787 (1967-02-01), Dies et al.
patent: 3351442 (1967-11-01), Hooper et al.
patent: 3661657 (1972-05-01), Wong
patent: 4629505 (1986-12-01), Paris
patent: 5496426 (1996-03-01), Murtha
patent: 5605586 (1997-02-01), Bekki et al.

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