在Gleeble-1500D热模拟机上研究了ZnAl10Cu2合金在变形温度为180～330℃、应变速率为0.01～10s-1、最大变形量为0.7条件下的热变形行为,采用动态材料模型的Murty失稳准则绘制了ZnAl10Cu2合金的热加工图,结合微观组织观察研究了该合金在实验条件下的微观变形机制及流动失稳现象,并优化了热变形的工艺参数.结果表明:ZnAl10Cu2合金在高应变速率区域容易发生流变失稳现象,45°剪切开裂、绝热剪切带和局部塑性流动是流动失稳区的主要变形机理,在变形安全区片状a1和a2相均发生了不同程度的球化和扭折,且基体β相发生了动态再结晶,在变形温度为240℃、应变速率为0.1 s-1时,能量耗散率达到峰值,约为53％.
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