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摘要：
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在Gleeble-1500热模拟机上对01570铝合金进行等温热压缩实验,变形温度为300~450℃,应变速率为0.001~1 s-1,研究其热压缩变形的流变应力行为。结果表明:01570铝合金真应力-应变曲线在变形温度为300℃,应变速率为0.01~1 s-1的条件下,流变应力开始随应变增加而增大,达到峰值后趋于平稳,表现出动态回复特征;而在其他条件下,应力达到峰值后随应变的增加而逐渐下降,表现出动态再结晶特征。在用Arrhenius方程描述01570铝合金热变形行为时,其变形激活能Q为152.33 kJ.mol-1。
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The flow stress behavior of 01570 aluminum alloy during hot compression deformation conditions was studied by isothermal hot compression on Gleeble-1500 hot simulation machine.The deformation temperature range was 300~450 ℃ and the strain rate range was 0.001~1 s-1.The experimental results indicate that the flow stress of 01570 aluminum alloy increases with increasing strain and tends to be constant after a peak value at temperature 300 ℃ and strain rates of 0.01~1 s-1,showing dynamic recover.The flow stress falls down after a peak value with the increasing strain at the other conditions,showing dynamic recrystallization.The deformation activation energy of 01570 aluminum alloy during hot deformation is 152.33 kJ·mol-1 from Arrhenius equation.
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基金项目：
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国家863计划项目(2006AA03Z523)
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作者简介：
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参考文献：
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