戴启雷,金雷,任英志,杨天宝,陈雯,李坤

• 1:重庆大学机械与运载工程学院
• 2:华纬科技股份有限公司
• 3:金属增材制造(3D打印)重庆市重点实验室
• 4:机械传动国家重点实验室

摘要(Abstract)：

使用不同线速度对?13.6 mm的55SiCr弹簧钢线材进行了在线快速感应加热热处理。采用光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)、电子背散射衍射(EBSD)及拉伸实验等分析了55SiCr弹簧钢热处理后的微观组织和力学性能。结果表明：在线快速感应加热热处理可细化实验钢的奥氏体晶粒尺寸，不同线速度下实验钢的微观组织主要由残留奥氏体和回火屈氏体构成并含有较高密度的位错结构。随着线速度的降低，相应回火保温时间的延长，实验钢的原奥氏体晶粒尺寸无明显变化，残留奥氏体相含量逐渐减少，α相含量逐渐增加，小角度晶界所占比例随回火时间的延长而逐渐减小。随着线速度的降低，实验钢在快速回火阶段的回复软化作用占据了主导作用，位错密度显著降低，导致其强度逐渐降低，断面收缩率增大。

关键词(KeyWords)： 弹簧钢;在线感应加热;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51975073);; 中央高校基本科研业务费(2021CDJQY-024)

作者(Author): 戴启雷,金雷,任英志,杨天宝,陈雯,李坤

DOI: 10.13289/j.issn.1009-6264.2022-0074

参考文献(References)：

• [1] 刘虎，孔祥华，孙彦辉，等.弹簧钢55SiCrA过冷奥氏体动态连续冷却转变[J].材料热处理学报，2011,32(7):73-77.LIU Hu,KONG Xiang-hua,SUN Yan-hui,et al.Dynamic continuous cooling transformation of supercooled austenite in spring steel 55SiCrA[J].Transactions of Materials and Heat Treatment,2011,32(7):73-77.
• [2] 李文浩，孔祥华，刘虎，等.弹簧钢55SiCrA控制冷却工艺[J].材料热处理学报，2013,34(6):89-93.LI Wen-hao,KONG Xiang-hua,LIU Hu,et al.Controlled cooling process of spring steel 55SiCrA[J].Transactions of Materials and Heat Treatment,2013,34(6):89-93.
• [3] He B B,Hu B,Yen H W,et al.High dislocation density induced large ductility in deformed and partitioned steels[J].Science,2017,357(6355):1029-1032.
• [4] Wang Y,Sun J,Jiang T,et al.A low-alloy high-carbon martensite steel with 2.6GPa tensile strength and good ductility[J].Acta Materialia,2018,158:247-256.
• [5] 李元元，程晓敏，蔡东东，等.热处理工艺对51CrV4弹簧钢组织和性能的影响[J].材料热处理学报，2018,39(7):55-63.LI Yuan-yuan,CHENG Xiao-min,CAI Dong-dong,et al.Effect of heat treatment process on microstructure and properties of 51CrV4 spring steel[J].Transactions of Materials and Heat Treatment,2018,39(7):55-63.
• [6] Yang Z M,Zhao Y,Wang R Z.Formation of ultra-fine ferrite grains in low carbon steels through low temperature heavy deformation[J].Acta Metallurgica Sinica,2000,36(10):1061-1066.
• [7] 陈银莉，左茂方，罗兆良，等.60Si2Mn弹簧钢表面脱碳理论及试验研究[J].材料热处理学报，2015,36(1):192-198.CHEN Yin-li,ZUO Mao-fang,LUO Zhao-liang,et al.Theoretical and experimental study on surface decarburization of 60Si2Mn spring steel[J].Transactions of Materials and Heat Treatment,2015,36(1):192-198.
• [8] Papaefthymiou S,Banis A,Bouzouni M,et al.Effect of ultra-fast heat treatment on the subsequent formation of mixed martensitic/bainitic microstructure with carbides in a CrMo medium carbon steel[J].Metals,2019,9(3):312-326.
• [9] Valdes-Tabernero M A,Vercruysse F,Sabirov I,et al.Effect of ultrafast heating on the properties of the microconstituents in a low-carbon steel[J].Metallurgical and Materials Transactions A,2018,49(8):3145-3150.
• [10] Cerda F C,Schulz B,Celentano D,et al.Exploring the microstructure and tensile properties of cold-rolled low and medium carbon steels after ultrafast heating and quenching[J].Materials Science and Engineering A,2019,745:509-516.
• [11] Spyros P,Marianthi B,Roumen H P.Study of carbide dissolution and austenite formation during ultra-fast heating in medium carbon chromium molybdenum steel[J].Metals,2018,8(8):646-663.
• [12] 祖荣祥.高强度弹簧钢丝的感应加热处理[J].金属热处理，1995(1):11-14.ZU Rong-xiang.Induction heating treatment of high strength spring steel wire[J].Heat Treatment of Metals,1995(1):11-14.
• [13] 徐福昌.两种弹簧钢在线热处理后的冲击韧性研究[J].钢铁，2000,35(8):45-47.XU Fu-chang.On the toughness of two kinds of spring steel after on-line heat treatment[J].Iron and Steel,2000,35(8):45-47.
• [14] 袁宏梅，王军艺，刘新宽，等.高强度悬架弹簧钢丝的组织结构[J].金属热处理，2018,43(2):106-110.YUAN Hong-mei,WANG Jun-yi,LIU Xin-kuan,et al.Microstructure of high strength suspension spring steel wire[J].Iron and Steel,2018,43(2):106-110.
• [15] 朱杰，欧梅桂，姜云，等.回火工艺对60Si2CrVAT弹簧钢组织及性能的影响[J].材料科学与工程学报，2016,34(2):316-320.ZHU Jie,OU Mei-gui,JIANG Yun,et al.Influence of tempering treatment on microstructure and property of 60Si2CrVAT spring steel[J].Journal of Materials Science and Engineering,2016,34(2):316-320.
• [16] 张朝磊，赵帆，文新理，等.加热温度和Nb对弹簧钢60Si2CrVAT完全脱碳层深度和形貌的影响[J].材料热处理学报，2015,36(9):167-172.ZHANG Chao-lei,ZHAO Fan,WEN Xin-li,et al.Effects of heating temperature and niobium microalloying on complete decarburized depth and microstructure of spring steel 60Si2CrVAT[J].Transactions of Materials and Heat Treatment,2015,36(9):167-172.
• [17] Christien F,Telling M T F,Knight K S.Neutron diffraction in situ monitoring of the dislocation density during martensitic transformation in a stainless steel[J].Scripta Materialia,2013,68(7):506-509.
• [18] Macchia J,Gaudeza S,Geandiera G,et al.Dislocation densities in a low-carbon steel during martensite transformation determined by in situ high energy X-Ray diffraction[J].Materials Science and Engineering A,2021,800:140249.
• [19] Saha D,Biro E,Gerlich A,et al.Effects of tempering mode on the structural changes of martensite[J].Materials Science and Engineering A,2016,673:467-475.
• [20] Kim B,Boucard E,Sourmail T,et al.The influence of silicon in tempered martensite:Understanding the microstructure-properties relationship in 0.5-0.6wt.% C steels[J].Acta Materialia,2014,68:169-178.
• [21] Galindo-Nava E I,Rivera-Díaz-Del-Castillo P E J.Understanding the factors controlling the hardness in martensitic steels[J].Scripta Materialia,2016,110:96-100.
• [22] Galindo-Nava E I,Rivera-Díaz-Del-Castillo P E J.A model for the microstructure behavior and strength evolution in lath martensite[J].Acta Materialia,2015,98:81-93.
• [23] 张可，孙新军，雍岐龙，等.回火时间对高Ti微合金化淬火马氏体钢组织及力学性能的影响[J].金属学报，2015,51(5):553-560.ZHANG Ke,SUN Xin-jun,YONG Qi-long,et al.Effect of tempering time on microstructure and mechanical properties of high Ti microalloyed quenched martensitic steel[J].Acta Metallurgica Sinica,2015,51(5):553-560.
• [24] Winning M,Rollett A D.Transition between low and high angle grain boundaries[J].Acta Materialia,2005,53(10):2901-2907.
• [25] Tan L,Allen T R.An electron backscattered diffraction study of grain boundary-engineered INCOLOY alloy 800H[J].Metallurgical and Materials Transactions A,2005,36:1921-1925.

文章评论(Comment)：