王敏,王守仁,王砚军,杨丽颖,赵方

• 1:山东大学材料科学与工程学院
• 2:济南大学机械工程学院

摘要(Abstract)：

利用光学显微镜(OM)和扫描电镜悬挂的EBSD背散射衍射实验观察并研究了ZK60镁合金铸轧条带在热压(350℃/0.1 s-1)及退火处理(退火温度分别为250,300,350和400℃,退火时间分别为100,1000,5000,10000和50000 s)条件下的微观结构组织与织构演变。利用动态再结晶理论分析了ZK60镁合金铸轧条带、条带经小应变变形和大应变变形条件下的微观结构演变机理,利用静态再结晶理论分析了试样在不同热处理条件下的组织变化。结果表明,铸扎条带在热压变形后基面织构由弱变强,滑移和孪生导致动态再结晶发生,随应变增加,出现剪切带,晶粒明显细化。退火后基面织构逐渐弱化,基面沿轧制方向发生倾转,材料发生了明显静态再结晶。

关键词(KeyWords)： ZK60镁合金;铸轧条带;热压变形;静态再结晶;微观结构演变;退火

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金(Y2008F27,ZR2009FL003)

作者(Author): 王敏,王守仁,王砚军,杨丽颖,赵方

DOI: 10.13289/j.issn.1009-6264.2010.06.003

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