Influences of Al, Ce on the Microstructure and Mechanical Properties of As-cast Mg-6Zn Alloy

摘要：

　　The effects of minor Al and Ce on the microstructures,room-temperature and high-temperature mechanical properties of as-cast Mg-6Zn magnesium alloys were investigated.With the Al addition into Mg-6Zn alloy,the coarse eutectic Mg51Zn20 phases were refined and distributed discontinuously.After adding 0.5wt.% Ce into Mg-6Zn-1Al alloy,a new needle-like Al2CeZn2 phase was observed.Meanwhile,the volume fraction of Mg51Zn20 phase decreased and the semi-continuous Mg51Zn20 phase became discontinuous globular morphology.It has been observed that the addition of Ce element coarsens the grains,and 1wt.% Al addition enhanced the yield strength and ultimate strength from 86.35MPa,229MPa to 90.7MPa,238MPa,respectively.Moreover,the Ce addition can significantly increase the high-temperature mechanical properties of cast Mg-6Zn-1Al alloy.

关键词： Magnesium alloy Mg-6Zn alloy Ce High-temperature mechanical properties

作者: Ruidong Liu Xuguang Dong Fujun Wei Yuansheng Yang

作者单位: Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 470-477

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）