Mg-6.1Li

Mg-8.2 Li and Mg-10.8Li

alloy ingots were prepared by melting in cast-iron crucible and casting in copper mould under the coverage of lithium chloride and lithium fluoride （LiCl:LiF=3:1） and the protection of argon

obtaining desirable ingot microstructure. Chemical reaction thermodynamic analysis reveals that graphite and magnesia are unsuitable as tool materials for melting and casting Mg-Li alloy

while cast iron

low carbon steel

Mo

copper and silicon carbide are suitable as tool materials. Thermodynamic analysis is basically consistent with the experimental results and relevant literatures.