卢立伟,刘天模,陈勇,吕城龄

• 1:重庆大学材料科学与工程学院
• 2:重庆大学国家镁合金工程技术中心

摘要(Abstract)：

研究了AZ31镁合金在挤压过程中长条晶粒的形成机理、挤压工艺对形成长条晶粒的影响以及长条状晶粒对室温拉伸变形断裂的影响。为消除长条晶粒,进行了不同工艺条件下的退火处理。结果表明:在挤压比为4.5时,长条状晶粒比较粗大,利用退火处理无法消除;当挤压比提高到10.1时,长条状晶粒比较狭窄,利用退火处理能有效地改善组织均匀性,较好的消除长条晶粒,其平均晶粒尺寸大约为20μm。

关键词(KeyWords)： 镁合金AZ31;长条状晶粒;断裂行为;退火处理

Abstract:

Keywords:

基金项目(Foundation): 国家“973”计划项目(2007CB613700)

作者(Author): 卢立伟,刘天模,陈勇,吕城龄

DOI: 10.13289/j.issn.1009-6264.2011.12.006

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