中南大学学报（自然科学版）2017，Vol.48Issue(4)：889-895,7.DOI:10.11817/j.issn.1672-7207.2017.04.006
X70HD管线钢形变诱导铁素体相变关键参数
Key parameters in the process of deformation induced ferrite transformation of X70HD pipeline steel
摘要
Abstract
X70HD pipeline steel's static phase transformation point and dynamic phase transition point were determined under certain conditions. Based on the measured phase transition points, a thermal simulation experiment of two stages large deformation whose accumulated deformation is as high as 80% was made. Deformation parameters in the first stage was fixed firstly, then the temperature and the strain rate of deformation in the second stage were changed before quenching, and then their influences on the generation of deformation induced ferrite and the grain size of ferrite were considered. The results show that the ferrite is deformation induced ferrite. The lower the strain rate is, the more deformation induced ferrite is found in the low temperature area of the austenite non-recrystallization region. And the higher the strain rate is, the more deformation induced ferrite is found in the high temperature area of the austenite non-recrystallization region.关键词
热膨胀/变形温度/应变速率/形变诱导铁素体Key words
thermal expansion/deformation temperature/strain rate/deformation induced ferrite transformation分类
矿业与冶金引用本文复制引用
王健,马洪琛,王洁,肖宏,解芃芃,朱伟..X70HD管线钢形变诱导铁素体相变关键参数[J].中南大学学报（自然科学版）,2017,48(4):889-895,7.基金项目
国家自然科学基金资助项目(51304171) （51304171）
河北省自然科学基金资助项目(E2013203248) （E2013203248）
人力资源和社会保障部留学人员科技活动项目(CG2016003001)(Project(51304171) supported by the National Natural Science Foundation of China （CG2016003001）
Project(E2013203248) supported by the Natural Science Foundation of Hebei Province （E2013203248）
Project(CG2016003001) supported by the Ministry of Human Resources and Social Security of the People's Republic of China) （CG2016003001）
