电磁冲击处理对M50轴承钢显微组织与强韧性的影响  

Effect of Electromagnetic Shock Treatment on Microstructure,Strength and Toughness of M50 Bearing Steel

作　　者：宋燕利[1,2,3] 武凯 芦赛 陈龙[1] 路珏[1,2,3] SONG Yanli;WU Kai;LU Sai;CHEN Long;LU Jue(Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology,Wuhan 430070,China;Hubei Research Center for New Energy&Intelligent Connected Vehicle,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,武汉430070 [2]武汉理工大学汽车零部件技术湖北省协同创新中心,武汉430070 [3]武汉理工大学湖北省新能源与智能网联车工程技术研究中心,武汉430070

出　　处：《轴承》2024年第11期86-96,共11页Bearing

基　　金：国家重点研发计划资助项目(2020YFA0714900);国家自然科学基金资助项目(51975440,52205410);湖北省自然科学基金资助项目(2022CFB846);新能源汽车科学与关键技术学科创新引智基地资助项目(B17034);教育部创新团队发展计划资助项目(IRT_17R83)。

摘　　要：建立了电-磁-热多场耦合的电磁冲击仿真模型,利用该模型预测了电磁冲击过程中试样表面的温度变化过程,分析了电磁冲击处理对材料强韧性的影响,并利用扫描电子显微镜(SEM)和电子背散射衍射(EBSD)对材料内部微观结构和断口形貌进行了表征和分析。结果表明:该模型成功预测了电磁冲击过程中试样表面的温度变化过程,且预测值与测量值吻合良好;合适的电磁冲击处理工艺(EST2)可以使材料具有较好的综合力学性能且有效提高材料性能的一致性,在保持平均抗拉强度基本不变的前提下,试样的断后伸长率提高了17.2%,冲击韧性提高了5.5%,屈服强度和抗拉强度一致性分别提高了52.8%和59.9%,冲击韧性一致性提高了42.6%。An electromagnetic shock simulation model with electric-magnetic-thermal multi-field coupling is established.The model is used to predict the temperature change process of sample surface during electromagnetic shock process,and analyze the effect of electromagnetic shock treatment on strength and toughness of material.The internal microstructure and fracture morphology of material are characterized and analyzed by scanning electron microscope(SEM)and electron backscattering diffraction(EBSD).The results show that the model successfully predicts the temperature change process of sample surface during electromagnetic shock process,and the predicted values are in good agreement with measured values;the appropriate electromagnetic shock treatment process(EST2)can endow material with good comprehensive mechanical properties and effectively improve the consistency of material properties,while maintaining the average tensile strength basically unchanged,the elongation after fracture of samples increases by 17.2%,the shock toughness increases by 5.5%,the consistency of yield strength and tensile strength increase by 52.8%and 59.9%,respectively,and the consistency of shock toughness increases by 42.6%.

关 键 词：滚动轴承 高温轴承钢 显微组织 力学性能 电流密度 温度 韧性 有限元法 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG142.1[一般工业技术—材料科学与工程]