论文部分内容阅读
在GLeeble1500D热模拟机上研究Mg-9Y-1MM-0.6Zr(WE91)合金的热变形行为,其变形温度为653773K,变形速率为0.0011s1,变形程度为60%;建立WE91合金流变应力预测模型。结果表明:合金的应力和应变之间的关系受变形温度及变形速率的影响,合金在高温变形过程中的流变应力可以由含Zener-Hollomon参数的双曲正弦函数表征,建立的数学模型可以很好地预测合金的流变应力,说明该模型可以很好地反映WE91合金的变形本质;合金在真应变为0.1时的平均激活能为220kJ/mol;变形温度和变形速率对WE91合金的变形组织也有明显的影响。
The hot deformation behavior of Mg-9Y-1MM-0.6Zr (WE91) alloy was studied on GLeeble1500D thermal simulator. The deformation temperature was 653773K, the deformation rate was 0.0011s1, and the deformation degree was 60%. The prediction model of flow stress of WE91 alloy was established. The results show that the relationship between the stress and strain of the alloy is affected by the deformation temperature and the deformation rate. The flow stress of the alloy during high temperature deformation can be characterized by hyperbolic sine function with Zener-Hollomon parameter. The established mathematical model can The results show that the model can well reflect the deformation nature of WE91 alloy. The average activation energy of the alloy at true strain of 0.1 is 220kJ / mol. The deformation temperature and the deformation rate of WE91 alloy deformation Organizations also have a significant impact.