摘要
利用Gleeble-1500D热模拟试验机,通过高温等温压缩试验,研究了在变形温度为600～800℃、应变速率为0.01～5 s-1条件下Cu-Cr-Zr-Ce合金的流变应力的变化规律,测定了其真应力一应变曲线,并利用光学显微镜分析了合金在热压缩过程中的组织演变及动态再结晶机制。结果表明:Cu-Cr-Zr-Ce合金的流变应力和峰值应力随变形温度的降低和应变速率的提高而增大;且变形温度越高,应变速率越小,合金越容易发生动态再结晶。
The flow stress change rules and deformation behavior of Cu-Cr-Zr-Ce alloy during hot compression deformation were studied by isothermal compression test using a Gleeble-1500D thermal-mechanical simulator at elevated temperature ranging from 600 ℃ to 800 ℃ and at the strain rate from 0. 01 s-1to 5 s-1. The microstructure evolution and dynamic recrystallization nucleation mechanisms of Cu-Cr-Zr-Ce alloy were analyzed by optical microscope. The results show that the peak flow stress increases with the decrease of deforming temperature and the increase of strain rate. The higher the temperature and the lower strain rate,the easier the dynamic recrystallization taking place.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第S2期10-13,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51101052)
河南省高等学校青年骨干教师资助计划(2012GGJS-073)
河南省教育厅自然科学研究计划(2011B430013)
河南科技大学青年科学基金(2011QN48)
