Inventors:
Frederic Barlat - Export PA
John C. Brem - New Kensington PA
Shigeo Hattori - Hyogo, JP
Yasuhiro Hayashida - Hyogo, JP
Daniel J. Lege - West Leechburg PA
Yasushi Maeda - Hyogo, JP
Kuniaki Matsui - Tochigi, JP
Shawn J. Murtha - Monroeville PA
Masahiro Yanagawa - Hyogo, JP
Kwansoo Chung - Seoul, KR
Narikazu Hashimoto - Tokyo, JP
Assignee:
Alcoa Inc. - Pittsburgh PA
International Classification:
C22C 2106
C22C 2108
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} , a volume fraction in a range of about 1% to 5% in the GOSS orientation {110} , a volume fraction in a range of about 1% to 10% in each of the BRASS orientation {110} , S orientation {123} , and COPPER orientation {112} , wherein the grain size is in a range of about 20 to 70. mu. m.