The influence of varied contents misch metal on microstructure of the Mg-10Li-4Al alloys was studied,and the effect of RE-compound in alloys was analyzed as well.In addition,the mechanical properties of alloys at room temperature were measured.The results indicate that the additions of lanthanum misch metal refine the grain and lead to the formation of rod-shaped Al3La compound which restrains the formation of Mg17Al12 and MgLiAl2 phases,consequently,the mechanical properties were improved.With the increasing amount of Al3La compound in alloy and it size become to coarsening,the strength of the alloys improved slowly and the elongation decreased.
Key words
Mg-Li alloys /
metallographic micro /
RE compound /
mechanical propertie
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