重型机械Issue(6)：28-34,7.
42CrMo钢热变形行为及热加工图研究
Study on thermal deformation behavior and hot working process diagram of 42CrMo steel
摘要
Abstract
In this paper,the hot deformation behavior of 42CrMo steel was studied by hot compression expe-riments with Gleeble-3800 thermal simulation machine at deformation temperature of 1 123～1 223 K and de-formation rate of 0.1～10 s-1.The constitutive equation of 42CrMo steel was established,and through analzing the material constants(α,n,Q and ln A),the flow stress prediction model is obtained.The hot working diagram of 42CrMo steel was drawn and the optimum hot working process range was obtained.The results show that the material is sensitive to temperature and strain rate,and the flow stress decreases with the increase of deformation temperature and the decrease of strain rate.The prediction accuracy of flow stress prediction model is 0.987.The optimal process range of 42CrMo steel is as follows,deformation temperature 1 140～1 223 K,strain rate 0.1～1.5 s-1.The study can provide guidance for 42CrMo steel hot deformation processing process formulation.关键词
42CrMo钢/热变形行为/本构方程/流变应力/热加工图Key words
42CrMo steel/thermal deformation behavior/constitutive equation/rheological stress/hot working diagram分类
矿业与冶金引用本文复制引用
李赵阳,王建梅,吉宏斌,毛泱博,王震宇..42CrMo钢热变形行为及热加工图研究[J].重型机械,2023,(6):28-34,7.基金项目
国家自然科学基金资助项目(52035006) （52035006）
