Aluminum alloy products for manufacturing structural components and method of producing the same

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United States of America Patent

SERIAL NO

13138129

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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.

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Patent OwnerAddress
GRIMAT ENGINEERING INSTITUTE CO LTDHUAIROU DISTRICT BEIJING 101407

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Xiwu Beijing, CN 2 1
Li, Zhihui Beijing, CN 12 27
Liu, Hongwei Beijing, CN 74 543
Wang, Feng Beijing, CN 521 5040
Xiong, Baiqing Beijing, CN 2 1
Zhang, Yongan Beijing, CN 2 1
Zhu, Baohong Beijing, CN 3 4

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