李德君,刘平,董企铭,田保红,任凤章

• 1:河南科技大学材料科学与工程学院

摘要(Abstract)：

使用Gleeble-1500D热模拟实验机对含稀土Nd的镁合金Mg-3Al-1Zn-0.8Nd在变形温度为250~450℃,应变速率为0.01~1s-1条件下的流变应力进行研究。研究结果表明:该合金的流变应力强烈地受变形温度与应变速率的影响。合金的流变应力随变形温度的升高而下降,随应变速率的增加而增加且在变形温度为450℃,应变速率为0.01s-1时呈稳态流变。该合金的流变应力与变形温度、应变速率的关系可以用幂指数关系描述。在本实验条件下,该合金的变形激活能为154.064kJ.mol-1。

关键词(KeyWords)： 稀土;AZ31B镁合金;热压缩变形;流变应力;激活能

Abstract:

Keywords:

基金项目(Foundation): 洛阳市科技发展计划项目(0602018A-1)

作者(Author): 李德君,刘平,董企铭,田保红,任凤章

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