Heat-resistant magnesium alloy for casting
AssigneeKurimoto, Ltd.
InventorsKeisuke Yamori, Takeaki Miyamoto, Yasuhide Kanatsu, Akihiko Koshi, Masaaki Yamamoto, Jinsun Liao
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Abstract
A magnesium alloy which has excellent tensile strength and elongation at a room temperature, as well as an excellent heat resistance represented by creep resistance is obtained. The magnesium alloy is produced which comprises 3.0% by mass or more and less than 6.0% by mass of Al, 0.10% by mass or more and 0.60% by mass or less of Mn, more than 0.50% by mass and less than 2.0% by mass of Ca, and more than 0.10% by mass and less than 0.40% by mass of Si, and has a balance composed of Mg and unavoidable impurities.
Claims4
A die cast magnesium alloy comprising:
- a composition consisting of:
- 4.5% by mass or more and less than 6.0% by mass of Al,
- 0.10% by mass or more and 0.60% by mass or less of Mn,
- more than 0.9% by mass and less than 2.0% by mass of Ca,
- more than 0.10% by mass and less than 0.40% by mass of Si, and
- a balance of Mg and unavoidable impurities;
- a tensile strength greater than or equal to 171 MPa, measured in accordance with ISO 6892-1;
- an elongation greater than or equal to 4.2%, measured in accordance with ISO 6892-1;
- and
- a creep strain of less than or equal to 0.17%, measured in accordance with ISO 204:2009 after 100 hours at 175° C. under an applied stress of 50 MPa.
A method for manufacturing a die cast magnesium alloy, the method comprising:
- preparing a magnesium alloy composition to consist of:
- 4.5% by mass or more and less than 6.0% by mass of Al,
- 0.10% by mass or more and 0.60% by mass or less of Mn,
- more than 0.9% by mass and less than 2.0% by mass of Ca,
- more than 0.10% by mass and less than 0.40% by mass of Si, and
- a balance of Mg and unavoidable impurities;
- and
- die casting the magnesium alloy composition to form the die cast magnesium alloy, wherein the die cast magnesium alloy comprises:
- a tensile strength greater than or equal to 171 MPa, measured in accordance with ISO 6892-1;
- an elongation greater than or equal to 4.2%, measured in accordance with ISO 6892-1;
- and
- a creep strain of less than or equal to 0.17%, measured in accordance with ISO 204:2009 after 100 hours at 175° C. under an applied stress of 50 MPa.
Dependencies are inferred from the claim text.