摘要:在Gleeb一1500型热模拟试验机上对Al-1.1Mn-0.3Mg-0.25RE合金进行了热压缩试验,研究了变形温度为300-500℃、应变速率为0.01-10S^-1叫条件下合金的热变形行为,并在此基础上建立了本构方程,绘制了合金加工图。结果表明:舍金热变形过程中的稳态流变应力可以用双曲正弦本构关系描述,热变形激活能为186.4817kJ·mol^-1,材料常数A、α、他分别为1.07697×10^10S^-1,0.037403,5.875667;合金最佳的加工温度度为450℃,应变速率为0.01S^-1。
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