摘要
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 high temperature isothermal compression experiment of Cu-0. 4Zr-0. 15 Ce alloy was carried out by using a Gleeble-1500 D thermal-mechanical simulating tester,in order to investigate its high temperature deformation behaviors,the elevated temperature and the strain rate range from 550 to 900 ℃ and from 0. 001 to 10 s^-1,respectively. The results showed that the flow stress decreased with the increased deforming temperature and increased with the increased strain rate,The dynamic recovery and recrystallization of Cu-0. 4Zr-0. 15 Ce alloy occurred in the process of hot compressive test. Based on the dynamic materials model,the hot processing maps were established and analyzed. Combined the hot processing maps with the microstructures evolution regularity,the optimal processing parameters of hot deformation in this experiment were determined,in which the hot deformation temperature range was 800 -- 900 ℃ and the strain rate range was 0. 001 - 0. 1 s^-1.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2016年第2期221-228,共8页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金项目(51101052)
河南省高校重点科研项目(15A430006)资助
