原子能科学技术2018，Vol.52Issue(6)：1077-1084,8.DOI:10.7538/yzk.2017.youxian.0512
CLAM钢的热变形行为及热加工图
Hot Deformation Behavior and Processing Map of CLAM Steel
摘要
Abstract
The hot deformation behaviors of China low activation martensitic(CLAM)steel were investigated by the thermal simulation compression test on Gleeble-3500 thermal simulator under the temperature of 950 ℃ to 1 150 ℃,strain rate of 0.01 s－1to 5 s－1and true strain of 1.2.The constitutive equation and hot processing map of CLAM steel were established.And the microstructures of CLAM steel under the deformation condition of stable domains and instability domains were observed by Leica-DMI5000M metallographic microscope.The results show that the dynamic recrystallization exists at higher deformation temperatures and lower strain rates condition.And dynamic recover-y mainly occurs at lower temperatures and higher strain rates.Specially,the instability domain at lower temperatures and higher strain rates should be avoided.By comparing and analyzing the hot processing map and microstructure,the optimum hot working domain of CLAM steel with the temperature of 955 ℃ to 1 035 ℃ and the strain rate of 0.03 s－1to 0.32 s－1was obtained,and under the conditions the power dissipation effi-ciency is above 36％.关键词
CLAM钢/热变形行为/本构方程/热加工图Key words
CLAM steel/hot deformation behavior/constitutive equation/hot process-ing map分类
矿业与冶金引用本文复制引用
丁文圆,宋庆华,赵飞,孙正..CLAM钢的热变形行为及热加工图[J].原子能科学技术,2018,52(6):1077-1084,8.基金项目
国家自然科学基金资助项目(51461008,51571066) （51461008,51571066）
贵州大学研究生创新基金资助项目(研理工2017074) （研理工2017074）
