Effect of zirconium addition on microstructure and mechanical properties of Mgb>97b>Yb>2b>Znb>1b> alloy

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• 作者：Bin CHEN ; ^{steelboy@sjtu.edu.cn} ; Chen LU ; Dong-liang LIN ; Xiao-qin ZENG
• 关键词：Mg97Y2Zn1 ; zirconium ; microstructure ; mechanical properties
• 刊名：Transactions of Nonferrous Metals Society of China
• 出版年：2012
• 期刊代码：12_10036326
• 类别：ms
• 出版时间：April, 2012
• 卷：22
• 期：4
• 页码：773-778
• 文件大小：1317 K

摘要

The effects of zirconium addition on the microstructure and mechanical properties of Mgb>97b>Yb>2b>Znb>1b> alloy were investigated. The microstructure of as-cast Mgb>97b>Yb>2b>Znb>1b> alloy is refined by the addition of zirconium. During the extrusion, the initial nucleation sites of the alloy are mainly original grain boundaries and secondary phase. The addition of zirconium could stimulate the DRX process because more grain boundaries are formed, which increases the dynamic recrystallization rate. Both the strength and elongation of the alloy are increased by the addition of zirconium.