【摘 要】
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The effect of hid addition on the microstructure and mechanical properties of ZK20 magnesium alloy was investigated by room tensile test,optical microscopy,X-ra
【机 构】
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College of Materials Science and Engineering,Department of Mechanic and Electronic Engineering,Natio
论文部分内容阅读
The effect of hid addition on the microstructure and mechanical properties of ZK20 magnesium alloy was investigated by room tensile test,optical microscopy,X-ray diffraction (XRD) and scanning electron microscopy (SEM) in order to develop a magnesium alloy with higher ductility.Results showed that the crystal grains of as-extruded ZK20+0.5%Nd magnesium alloy were effectively refined,and the alloy exhibited higher strength and ductility,with the UTS of 237 MPa and the elongation of 32.8%,increasing by 5% and 50% for those of ZK20 alloy respectively.Some fine granular Mg-Zn-Nd ternary phases (τ1,τ4) appeared in the as-extruded ZK20+ 0.5% Nd magnesium alloy.It was found that ZK20 showed brittle fracture surface,while the fracture surface of ZK20+0.5%Nd showed a mixed characteristics of brittleness and ductility.
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