Effect of Nd Addition on the Microstructure and Mechanical Properties of Mg-6Zn-Mn Magnesium Alloy
ZHANG Ding-fei1,2, ZHANG Hong-ju1,2, DUAN Zuo-heng1,2, QI Fu-gang1,2, PAN Fu-sheng1,2
1. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;
2. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China
Abstract：The microstructure and mechanical properties of as-extruded Mg-6Zn-Mn magnesium alloy with different Nd content were investigated by OM, XRD and tensile testing, respectively. It was found that the dendrite arm spacing of as-cast Mg-6Zn-Mn magnesium alloys was effectively decreased with Nd addition. Furthermore, the microstructure of Mg-6Zn-Mn magnesium alloys changed significantly after hot extrusion at 360℃ with Nd doped under extrusion ratios of 25. The Mg-6Zn-Mn magnesium alloy with 0.2% Nd shows the highest yield strength (about 250 MPa) and ultimate strength (above 300MPa) by tensile tests at room temperature.
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2013, Vol. 0 
