Abstract：Mg-1.5Zn-xY and Mg-1.5Zn-xCe (x= 0,0.2,0.5,1.0) alloys were designed to investigate the effect of Y and Ce on microstructure and formability of hot rolled Mg-1.5Zn sheet at room temperature via optical microscope(OM), scanning electron microscopy(SEM) and X-ray diffraction(XRD) etc. The results show that Y and Ce elements can effectively weaken and modify the basal texture where the position of basal plane is tilted from normal direction(ND) toward transverse direction(TD). The formation of second phase particles Mg2Y5,Mg3Zn3Y and MgZnCe due to the addition of Y and Ce element plays a fine grain size strengthening role in the alloys. Besides, it is conducive to the recrystallization, leading to the great improvement of ductility (the maximum of elongation is 27%), strength (the maximum of tensile strength is 252MPa) and stretch formability (the maximum of Erichsen value is 5.46) of alloys. However, excessive addition of Y and Ce elements is harmful to further improvement of alloys' performance.
刘鹏, 江海涛, 段晓鸽, 康强. 稀土元素Y和Ce对热轧Mg-1.5Zn镁合金组织和室温成形性能的影响[J]. 材料工程, 2014, 0(12): 1-10.
LIU Peng, JIANG Hai-tao, DUAN Xiao-ge, KANG Qiang. Effects of Yttrium(Y) and Cerium(Ce) on Microstructure and Stretch Formability of Hot Rolled Mg-1.5Zn Magnesium Sheet at Room Temperature. Journal of Materials Engineering, 2014, 0(12): 1-10.
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