曹凤红,赵成荣,龙思远,宋黎

• 1:成都理工大学工程技术学院
• 2:重庆大学材料科学与工程学院

摘要(Abstract)：

对模压态AZ61镁合金在室温～150℃条件下的的力学性能及变形机制进行研究。结果表明:在拉伸速度1 mm/min,随着拉伸温度的升高,拉伸后的显微组织中晶界逐渐软化,动态再结晶有减少趋势,并伴随有孪晶出现,抗拉强度及屈服强度显著下降,而其伸长率在低温拉伸中的变化幅度有限;同时在90～130℃发生了动态应变时效;对拉伸断口的观察分析表明,随着温度的逐渐升高(≤150℃),其断裂机制由韧脆混合断裂逐渐变为韧性断裂。

关键词(KeyWords)： AZ61镁合金;拉伸;显微组织;断裂机制

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 曹凤红,赵成荣,龙思远,宋黎

DOI: 10.13289/j.issn.1009-6264.2012.s1.015

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