| 摘要 |
A magnesium alloy includes 0.1 to 6.0% by weight of Al, 0.25 to 6.0% by weight of Zn, 0.1 to 4.0% by weight of rare earth element (hereinafter referred to as "R.E."), and balance of Mg and inevitable impurities. Preferably, it includes 1.0 to 3.0% by weight of Al ("a"), 0.25 to 3.0% by weight of Zn ("b") and 0.5 to 4.0% by weight of R.E.: wherein when "b" is in a range, 0.25</="b"</=1.0, "a" and "c" satisfy a relationship, "c"</="a"+1.0; and when "b" is in a range, 1.0</="b"</=3.0, "a," "b" and "c" satisfy a relationship, "c"</="a"+"b"</=(+E,fra 1/2+EE )"c"+4.0; in order to further improve creep properties at elevated temperatures while maintaining enhanced tensile strength at room temperature and up to 100 DEG C. at least.
|
