王敬丰,赵亮,潘复生,汤爱涛,丁培道

• 1:重庆大学材料科学与工程学院
• 2:重庆大学国家镁合金材料工程技术研究中心

摘要(Abstract)：

采用金相分析、拉伸实验、动态机械热分析等方法研究了时效处理(T5)、固溶处理(T4)及固溶后时效处理(T6)三种不同热处理工艺对挤压态AZ61镁合金显微组织、力学性能及阻尼性能的影响。研究表明:与挤压态的AZ61镁合金相比,T5态与T6态的强度明显提高,且T6态仍保持了一定的塑性;T4态虽未提高其强度,但提升了合金的伸长率。而在阻尼性能方面,挤压态和T5态的阻尼性能较差,T4态和T6态与应变相关部分的阻尼得到了大幅度提升。通过Granato-Lücke理论可以很好的解释不同热处理工艺对AZ61镁合金阻尼性能的影响规律。

关键词(KeyWords)： 镁合金;热处理工艺;力学性能;阻尼性能;Granato-Lücke理论

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(10876045);; 重庆市科技攻关计划项目(cstc,2008AB4114);; 国家重点基础研究发展计划“973”资助项目(2007CB613704);; 国家自然科学杰出青年基金资助项目(50725413)

作者(Author): 王敬丰,赵亮,潘复生,汤爱涛,丁培道

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