中南大学学报（自然科学版）2017，Vol.48Issue(6)：1448-1457,10.DOI:10.11817/j.issn.1672-7207.2017.06.006
超临界马氏体不锈钢热变形行为
Hot behavior of supercritical martensitic stainless steel at elevated temperature
摘要
Abstract
Isothermal hot compression tests of supercritical martensitic steel were performed on a Gleeble-3500 thermo-mechanical simulator at the temperature range of 900-1 150 ℃ and the strain rate range of 0.005-5 s-1 to obtain the flow stress-strain curves.Based on the experimental data,modified constitutive models were developed,and the suitability of Johnson-Cook (JC) and Arrhenius flow stress models to the studied steel was discussed.The results indicate that the modified constitutive models are more accurate in predicting the flow stress.The modified JC model is more accurate under high strain rate conditions,while the Arrhenius model is more accurate at low strain rate conditions.The values of experimental load and predicted load show a good agreement,indicating that the developed model is adequate to describe the flow behavior of the steel.关键词
马氏体不锈钢/流变应力/Arrhenius模型/本构模型Key words
martensitic stainless steel/flow stress/Arrhenius model/constitutive model分类
矿业与冶金引用本文复制引用
王梦寒,王瑞,王根田,孟烈..超临界马氏体不锈钢热变形行为[J].中南大学学报（自然科学版）,2017,48(6):1448-1457,10.基金项目
中央高校基本科研业务费专项资金资助项目(CDJZR14130006)(Project(CDJZR14130006) supported by the Fundamental Research Funds for the Central Universities) （CDJZR14130006）
