Invention Grant
- Patent Title: Aluminum alloy products having improved property combinations and method for artificially aging same
- Patent Title (中): 铝合金产品具有改善的性能组合和人造老化方法
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Application No.: US12152635Application Date: 2008-05-14
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Publication No.: US08840737B2Publication Date: 2014-09-23
- Inventor: Gary H. Bray , Dhruba J. Chakrabarti , Diana K. Denzer , Jen C. Lin , John Newman , Gregory B. Venema , Cagatay Yanar , Julien Boselli
- Applicant: Gary H. Bray , Dhruba J. Chakrabarti , Diana K. Denzer , Jen C. Lin , John Newman , Gregory B. Venema , Cagatay Yanar , Julien Boselli
- Applicant Address: US PA Pittsburgh
- Assignee: Alcoa Inc.
- Current Assignee: Alcoa Inc.
- Current Assignee Address: US PA Pittsburgh
- Agency: Greenberg Traurig LLP
- Main IPC: C22C21/10
- IPC: C22C21/10 ; B64C3/26 ; C22F1/053 ; B64C3/18 ; B64C1/00

Abstract:
Aluminum alloy products about 4 inches thick or less that possesses the ability to achieve, when solution heat treated, quenched, and artificially aged, and in parts made from the products, an improved combination of strength, fracture toughness and corrosion resistance, the alloy consisting essentially of: about 6.8 to about 8.5 wt. % Zn, about 1.5 to about 2.00 wt. % Mg, about 1.75 to about 2.3 wt. % Cu; about 0.05 to about 0.3 wt. % Zr, less than about 0.1 wt. % Mn, less than about 0.05 wt. % Cr, the balance Al, incidental elements and impurities and a method for making same. The instantly disclosed alloys are useful in making structural members for commercial airplanes including, but not limited to, upper wing skins and stringers, spar caps, spar webs and ribs of either built-up or integral construction.
Public/Granted literature
- US20100037998A1 Aluminum alloy products having improved property combinations and method for artificially aging same Public/Granted day:2010-02-18
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