研究了β区淬火时效的TC4合金在400℃和600℃的应力松弛行为,并对应力松弛曲线进行拟合;微观组织观察结合宏观热变形参数分析表明:400℃应力松弛机制为位错滑移和孪晶及晶界、相界的运动,孪晶为(10-11)类型;600℃位错塞积成为亚晶界,应力松弛变形机制为位错滑移、攀移和原子扩散.
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