Abstract
A kind of magnesium alloy which has excellent ignition-proof performance and approximate chemical composition with AZ91D alloy was obtained by beryllium and rare earth (RE) addition. A high content of beryllium in magnesium alloy could prevent the ignition of the magnesium, but it also makes the grain coarse and decreases the tensile properties. RE elements were added to refine the grains and improve the tensile strength to the level of AZ91D. On the other hand, casting properties such as fluidity and hot-tearing property were better than those of AZ91D alloy.
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