淬火方式对CF53钢显微组织及性能的影响  

Effect of quenching method on microstructure and properties of CF53 steel

作　　者：方静 劳浙茱 李吉学[1] FANG Jing;LAO Zhe-zhu;LI Ji-xue(Electron Microscope Center,Zhejiang University,Hangzhou 311500,China)

机构地区：[1]浙江大学电子显微镜中心,浙江杭州311500

出　　处：《材料热处理学报》2022年第10期91-99,共9页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51971203)。

摘　　要：采用扫描电镜、能谱仪、X射线衍射仪、光学显微镜、显微硬度计等研究了不同热处理方式对CF53钢的组织和性能的影响。结果表明:整体淬火和感应淬火后,CF53钢均在表层形成具有高硬度和高耐磨性的马氏体组织。整体淬火的马氏体组织较为细小,能够提高表面层的整体力学性能,保温一定时间后,淬透性有所提升,能获得较深淬透层,但表面会形成脱碳层,过渡淬火区会产生各向异性的带状组织,降低CF53钢的性能。感应淬火没有表面脱碳层,节约了时间和钢材成本,未淬透区韧性好。综合而言,感应淬火是较为适用企业生产的一种热处理方式。Effect of different heat treatment methods on microstructure and properties of CF53 steel was studied by means of scanning electron microscopy,energy dispersive spectrometer,X-ray diffractometer,optical microscope and microhardness tester.The results show that martensite with high hardness and wear resistance is formed on the surface of the CF53 steel after integral quenching or induction quenching.The martensite structure of the steel after integral quenching is relatively small,which can improve the overall mechanical properties of its surface layer.After holding for a certain time,the hardenability is improved,and a deeper hardened layer can be obtained.However,a decarburized layer will be formed on the surface,and an anisotropic banded structure will be produced in the transition quenching zone,which will worsen the properties of the CF53 steel.Induction hardening does not produce surface decarburization layer,which saves time and cost,and the toughness of the unhardened zone is good.In summary,induction hardening is a heat treatment method more suitable for enterprise production.

关 键 词：显微组织 整体淬火 感应淬火 淬透性 

分 类 号：TG142.3[一般工业技术—材料科学与工程]