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:
Jun. 12, 2018
Filed:
Jun. 25, 2010
Baiqing Xiong, Beijing, CN;
Yongan Zhang, Beijing, CN;
Baohong Zhu, Beijing, CN;
Xiwu LI, Beijing, CN;
Zhihui LI, Beijing, CN;
Feng Wang, Beijing, CN;
Hongwei Liu, Beijing, CN;
Baiqing Xiong, Beijing, CN;
Yongan Zhang, Beijing, CN;
Baohong Zhu, Beijing, CN;
Xiwu Li, Beijing, CN;
Zhihui Li, Beijing, CN;
Feng Wang, Beijing, CN;
Hongwei Liu, Beijing, CN;
GRIMAT Engineering Institute Co., Ltd., Beijing, CN;
Abstract
An aluminum alloy product for manufacturing structural components, made from direct chill casting ingots comprises, based on wt %: Zn 7.5˜8.7, Mg 1.1˜2.3, Cu 0.5˜1.9, Zr 0.03˜0.20, the balance being Al, incidental elements and impurities. The levels of Zn, Mg, Cu, and Zr in the aluminum alloy products satisfy the expressions of (a) 10.5≤Zn+Mg+Cu≤11.0; (b) 5.3≤(Zn/Mg)+Cu≤6.0; and (c) (0.24−D/4800)≤Zr≤(0.24−D/5000). D is the minimum length of a line section connecting any two points on the periphery of the cross section of the ingot and passing through the geometrical center of the cross section. 250 mm≤D≤1000 mm. The aluminum alloy products have a superior combination of strength and damage tolerance, and exhibit homogeneous and consistent performance on the surface, at various depths under the surface, and in the core of the product. A method of producing the aluminum alloy products is also provided.