2014•Applied Mechanics and MaterialsOpen access

Effects of Ca and Y on Microstructures and Mechanical Properties of Magnesium Alloy AZ81

Lei Lei Chen, Quan An Li, Jiang Chang Xie

Abstract

By the scanning electron microscopy, the microstructure and mechanical properties testing, the effect of Ca and Y on the microstructure and mechanical properties of magnesium alloy AZ81 are investigated in this paper. The results show that with Ca and Y addition, the grain size is refined. And with the β-Mg17Al12 phase reducing significantly, there will be the precipitation of Al2Ca and Al2Y. Meanwhile, the mechanical properties of AZ81 magnesium alloy are enhanced at room temperature and 150°C.

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Key concepts: Microstructure, Materials science, Alloy, Magnesium, Magnesium alloy, Scanning electron microscope, Precipitation, Metallurgy