孟利,刘璋,陈冷

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

对AZ31镁合金热挤压板进行室温轧制(形变量为8%)后,利用背散射衍射技术原位(in-situ EBSD)观测了轧制试样中不同类型的孪晶组织在再结晶退火过程中的取向演变。结果表明:退火过程中拉伸孪晶区域形成尺寸相对粗大的再结晶新晶粒,再结晶晶粒取向与拉伸孪晶的取向较为接近;压缩孪晶/双孪晶区域形成了细小的再结晶晶粒,再结晶晶粒偏离基面取向。孪晶再结晶显著影响镁合金在退火过程中的织构演变,轧制样品中,拉伸孪晶再结晶使得基面织构强度增强,压缩孪晶再结晶则可以在一定程度上弱化镁合金的基面织构。

关键词(KeyWords)： 镁合金;孪晶;再结晶;织构;原位EBSD

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51201007);; 教育部博士学科点专项科研基金(20100006120023);; 中央高校基本科研业务费(FRF-TP-12-045A)

作者(Author): 孟利,刘璋,陈冷

DOI: 10.13289/j.issn.1009-6264.2015.05.027

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