Title: Quasi crystal phase fortified magnesium lithium alloy and its preparation method
Application Number: 200610134114 Application Date: 2006.11.01
Publication Number: 1948532 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C22C23/00;C22C1/03;B22D21/04;C22F1/06;C22C1/06;B21C23/00
Applicant(s) Name: Inst. of Metals, CAS Address:
Inventor(s) Name: Xu Daokui;Han Enhou;Liu Lu;Gao Guozhong;Chen Rongs
Attorney & Agent: zhangzhi wei
Abstract:
    The invention relates to Mg-Li alloy with high strength and its preparation techniques. It especially relates to Mg-Li alloy strengthened by quasi-crystalline phase and its preparation techniques, which can solve problems of alloy strengthening. Mg-Li alloy with low density, high strength and good plasticity is prepared by reasonable choosing of alloy elements and introducing quasi-crystalline phase into alloy base. The alloy is two-phase alloys of Mg-Li alloy in alpha-Mg and beta-Li phase areas. Component and content of the alloy are 5.5-11.5% Li, 0.5-15% Zn, 0.1-8% Y, and the allowances are Mg, in which percent is weight proportion. The alloy is made by melting and subsequent processing of hot extrusion and its crafts are simple and convenient to operate. Properties of materials are as follows: tensile strength is sigma b=200-300MPa, yield strength is sigma 0.2=150-260MPa, elongation percentage isdelta=17-65% and density is 1.34-1.83g/cm3.
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