Microstructure of the LPSO Phase in Mg98.5Zn0.5Y1 Alloy Prepared by Directional Solidification and Its Effect on Electromagnetic Shielding Performance
XU Zhichao1, FENG Zhongxue1, SHI Qingnan1, YANG Yingxiang2, WANG Xiaoqi2, QI Huarong2
1 School of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093; 2 Key Laboratory of Advances Materials of Yunnan Province, Kunming 650093
Abstract: The microstructure of the LPSO phase in Mg98.5Zn0.5Y1 alloy prepared by directional solidification and its effect on electromagnetic shielding performance were investigated. The formation of 14H-type LPSO was observed. For the directional solidification polycrystals, the LPSO exhibited a lamellar shape. By comparing the electromagnetic shielding properties of ordinary cast and directional solidified Mg98.5Zn0.5Y1 alloy, it was found that the ordered LPSO phase could increase the electromagnetic shielding performance. The theoretical model of multi-layer uniform planar and the relationship between electromagnetic shielding performance and orientation of LPSO in magnesium were discussed. By adding the element Zr, the effect of the LPSO width on the electromagne-tic shielding performance was investigated. The result showed that the electromagnetic shielding performance was improved in high frequency due to the addition of Zr.
徐志超, 冯中学, 史庆南, 杨应湘, 王效琪, 起华荣. 定向凝固制备Mg98.5Zn0.5Y1合金中LPSO相的结构及其对合金电磁屏蔽性能的影响[J]. 材料导报, 2018, 32(6): 865-869.
XU Zhichao, FENG Zhongxue, SHI Qingnan, YANG Yingxiang, WANG Xiaoqi, QI Huarong. Microstructure of the LPSO Phase in Mg98.5Zn0.5Y1 Alloy Prepared by Directional Solidification and Its Effect on Electromagnetic Shielding Performance. Materials Reports, 2018, 32(6): 865-869.
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2018, Vol. 32 
