材料与冶金学报2017，Vol.16Issue(4)：281-285,5.DOI:10.14186/j.cnki.1671-6620.2017.04.007
中温中压容器用钢13MnNiMoR的热变形行为研究
Hot deformation behavior of 13 MnNiMoR pressure vessel steel
摘要
Abstract
In order to provide a theoretical basis for hot working technologies, the hot deformation behavior of 13MnNiMoR pressure vessel steel was studied by a single-pass compressive deformation test at elevated temperatures to explore effects of deformation temperature (950~1150℃) and strain rate (0. 01~1 s-1 ) on deformation. The results showed that dynamic recrystallization is easy to occur in austenite when strain rate is lower than 0. 1 s-1 because a new austenite has enough time to nucleate and grow. The main softening mechanism of this steel changes from dynamic recrystallization to dynamic recovery with decreasing temperature and increasing strain rate. Through data fitting, the stress exponent and activation energy for dynamic recrystallization were determined to be 4. 29 and 319 kJ/mol. Finally, the hot working equation of 13MnNiMoR steel was established on the basis of compressive flow stress curves.关键词
13MnNiMoR钢/压力容器用钢/热变形/动态再结晶/激活能Key words
13MnNiMoR steel/pressure vessel steel/hot working/dynamic recrystallization/activation energy分类
矿业与冶金引用本文复制引用
方磊,霍松波,张春丽,李兴,陈洁,赵阳..中温中压容器用钢13MnNiMoR的热变形行为研究[J].材料与冶金学报,2017,16(4):281-285,5.基金项目
国家自然科学基金资助项目(51501031) （51501031）
中央高校基本科研业务费(N140203001). （N140203001）
