重型机械Issue(5)：1-6,6.
基于晶粒与取向差演化的热轧复合板屈服强度模型研究
Research on the yield strength model of hot rolled comosite plates based on the erolution of grain and orientation differences
摘要
Abstract
This study develops a computational model to predict the yield strength of three-layer stainless steel/carbon steel/stainless steel clad plates based on experimental data from varied hot rolling processes.The two-pass rolling schedule involved a first pass at reduction rates of 25%,30%,and 35%,followed by a second pass at a constant 20%reduction.Results show that increasing the first-pass reduction rate reduced the average grain diameter of the carbon steel substrate from 14.74 μm to 8.95 μm,while the average kernel average misorientation(KAM)initially decreased then increased(1.72°,1.01°,and 1.27°,respectively).Conversely,the average grain diameter of the stainless steel cladding first increased then decreased(23.67 μm,40.49 μm,and 28.64 μm,respectively),with a corresponding increase in average KAM value(0.48°,1.06°,and1.10°).The calculated yield strengths(300.44 MPa,305.25 MPa,and 333.55 MPa)all fell within 7.1%of the experimental values(280.61 MPa,325.83 MPa,and 355.51 MPa),validating the model's accuracy.Analysis confirms that the material's yield strength is simultaneously influenced by grain diameter and KAM,with grain diameter being the predominant factor.Specifically,yield strength is inversely proportional to grain diameter and directly proportional to the KAM value.关键词
复合板/屈服强度/晶粒直径/局部取向差Key words
composite panels/yield strength/grain diameter/kernel average misorientation分类
矿业与冶金引用本文复制引用
杨建慧,李海斌,陈超,帅美荣,王强..基于晶粒与取向差演化的热轧复合板屈服强度模型研究[J].重型机械,2025,(5):1-6,6.基金项目
国家自然科学基金资助项目(51875382) （51875382）
山西省重点研发计划项目(202302150401003) （202302150401003）
太原市关键核心技术攻关"揭榜挂帅"项目(2024TYJB0114) （2024TYJB0114）
山西省专利转化项目(202403006) （202403006）
晋城市重点研发计划(20230109) （20230109）
忻州市重点研发计划(20240103) （20240103）
