Abstract
To develop magnesium alloy with low cost, high strength and excellent elevated temperature properties. effect of Y and Ce addition on microstructure and mechanical properties of AM50 magnesium alloy was studied. Result showed that addition of small amount of Y and Ce to AM50 alloys resulted in refinement of microstructure. Owing to the improvement of microstructure, the mechanical properties of alloys at both ambient and elevated temperature were increased. AM50 alloy containing 0.6% Ce-0.3% Y (mass fraction) had good refinement effect and relatively ideal mechanical properties.
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