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US 11,286,544 B2Granted
Calcium-bearing magnesium and rare earth element alloy and method for manufacturing the same
AssigneeThe Boeing Company
InventorsHaitao Jiang, Qiang Kang, Yun Zhang, Peng Liu, Peng Dong, Zhe Xu, Chaomin Liu
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Abstract
A calcium-bearing magnesium and rare earth element alloy consists essentially of, in mass percent, zinc (Zn): 1-3%; aluminum (Al): 1-3%; calcium (Ca): 0.1-0.4%; gadolinium (Gd): 0.1-0.4%; yttrium (Y): 0-0.4%; manganese (Mn): 0-0.2%; and balance magnesium (Mg).
Claims20
A method for manufacturing a magnesium alloy sheet comprising:
- weighting raw materials to obtain a desired composition;
- charging said raw materials into a vacuum induction melting furnace to obtain a molten mass;
- casting said molten mass to yield a magnesium alloy ingot consisting essentially of:
- about 1 to about 3 percent by weight zinc;
- about 1 to about 3 percent by weight aluminum;
- about 0.1 to about 0.4 percent by weight calcium;
- about 0.1 to about 0.4 percent by weight gadolinium;
- zero to about 0.4 percent by weight yttrium;
- zero to about 0.2 percent by weight manganese;
- and balance magnesium;
- solid solution treating said magnesium alloy ingot to yield a treated magnesium alloy ingot;
- hot rolling said treated magnesium alloy ingot to yield a rolled material;
- cutting defects from said rolled material to obtain said magnesium alloy sheet;
- and
- annealing said magnesium alloy sheet,
- wherein the magnesium alloy sheet has a tensile strength of at least 245.0 MPa, an elongation to failure of at least 18.0%, and an IE value of at least 4.50.
13 more elements
A method for manufacturing a magnesium alloy sheet comprising:
- forming the magnesium alloy sheet at room temperature, the magnesium alloy sheet consisting essentially of:
- about 1 to about 3 percent by weight zinc;
- about 1 to about 3 percent by weight aluminum;
- about 0.1 to about 0.4 percent by weight calcium;
- about 0.1 to about 0.4 percent by weight gadolinium;
- zero to about 0.4 percent by weight yttrium;
- zero to about 0.2 percent by weight manganese;
- and balance magnesium,
- wherein the magnesium alloy sheet has a tensile strength of at least 245.0 MPa, an elongation to failure of at least 18.0%, and an IE value of at least 4.50.
6 more elements
Dependencies are inferred from the claim text.