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Cu-0.4Zr-0.15Ce合金在Gleeble-1500D热模拟试验机上进行高温等温压缩试验以探讨其在高温热压缩过程中的变形行为,变形温度和应变速率分别为550~900℃和0.001~10 s-1。结果表明:合金的流变应力随变形温度的升高而减小、随应变速率的提高而增大,在热压缩过程中发生了动态回复和再结晶。根据动态材料模型绘制该合金的热加工图并加以分析,结合微观组织演变规律,可确定该合金热变形过程的最佳工艺参数为:变形温度800~900℃,应变速率范围0.001~0.1 s-1。
The Cu-0.4Zr-0.15Ce alloy was subjected to high temperature isothermal compression test on a Gleeble-1500D thermal simulator to investigate the deformation behavior of the Cu-0.4Zr-0.15Ce alloy during hot compression. The deformation temperature and strain rate were 550-900 ℃ and 0.001-10 s -1. The results show that the flow stress of the alloy decreases with the increase of the deformation temperature and increases with the increase of the strain rate, and dynamic recovery and recrystallization occur during the hot compression. According to the dynamic material model, the hot working diagram of the alloy was drawn and analyzed. Combined with the microstructure evolution law, the optimum technological parameters of the alloy were determined as follows: deformation temperature 800 ~ 900 ℃, strain rate range 0.001 ~ 0.1 s- 1.