Invention Application
- Patent Title: ALUMINUM-COPPER-LITHIUM ALLOYS
- Patent Title (中): 铝 - 铜合金
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Application No.: US14242577Application Date: 2014-04-01
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Publication No.: US20140212326A1Publication Date: 2014-07-31
- Inventor: Edward L. Colvin , Roberto J. Rioja , Les A. Yocum , Diana K. Denzer , Todd K. Cogswell , Gary H. Bray , Ralph R. Sawtell , Andre L. Wilson
- Applicant: ALCOA INC.
- Applicant Address: US PA Pittsburgh
- Assignee: ALCOA INC.
- Current Assignee: ALCOA INC.
- Current Assignee Address: US PA Pittsburgh
- Main IPC: C22C21/16
- IPC: C22C21/16

Abstract:
Improved aluminum-copper-lithium alloys are disclosed. The alloys may include 3.4-4.2 wt. % Cu, 0.9-1.4 wt. % Li, 0.3-0.7 wt. % Ag, 0.1-0.6 wt. % Mg, 0.2-0.8 wt. % Zn, 0.1-0.6 wt. % Mn, and 0.01-0.6 wt. % of at least one grain structure control element, the balance being aluminum and incidental elements and impurities. The alloys achieve an improved combination of properties over prior art alloys.
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