Heat treatment and mechanical properties of cast Mg-5Gd-3Y-0.3Zr alloy

摘要：

Heat treatment,microstructures and mechanical properties of cast Mg-5Gd-3Y-0.3Zr alloy were investigated. The microstruc ture of as-cast alloy is a typical dendritic structure;after solution treated, the alloy was aged at a temperature rang of 200-225 X.for dif ferent aging time,the hardness increases with the aging time prolonging,the peak age hardness is high than 100HV at 200 ?.. Tensile strength was tested at 25,200,250 and 300 ?,tensile strengths are 219,218,206 and 200 MPa respectively.With the tensile strength decreasing slightly,the elongation increases quickly. The results showed that the alloy is a new type magnesium-rare earth alloy with ex cellent high temperature mechanical properties.

关键词： magnesium alloy rare earth heat treatment

作者: YAO Sujuan HUANG Xia CANG Xianghui LI Wangxing

作者单位: School of Materials Science and Engineering,Central South University,Changsha 410083,China Zheng Zho Zheng Zhou Research Institute of CHALCO,Zhengzhou 450041,China

会议类型: 国际会议

会议名称: The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)

会议地点: 浙江嘉兴

会议语种:英文

页码: 285-288

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）