The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2000
Filed:
Aug. 26, 1999
Frederic Barlat, Export, PA (US);
John C Brem, New Kensington, PA (US);
Shigeo Hattori, Hyogo, JP;
Yasuhiro Hayashida, Hyogo, JP;
Daniel J Lege, West Leechburg, PA (US);
Yasushi Maeda, Hyogo, JP;
Kuniaki Matsui, Tochigi, JP;
Shawn J Murtha, Monroeville, PA (US);
Masahiro Yanagawa, Hyogo, JP;
Kwansoo Chung, Seoul, KR;
Narikazu Hashimoto, Tokyo, JP;
Alcoa Inc., Pittsburgh, PA (US);
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.