刘帅,颜莹,王斌,张鹏,周相海,郑雷刚,胡小强,李小武,张哲峰

• 1:东北大学材料科学与工程学院材料物理与化学系
• 2:中国科学院金属研究所

摘要(Abstract)：

采用扫描电镜、拉伸和冲击试验机等研究了42CrMoVRE钢经不同工艺热处理后的显微组织、力学性能与冲击韧性。结果表明：油淬+高温回火后实验钢的组织为回火索氏体，正火+油淬+高温回火后的显微组织为回火索氏体+少量针状铁素体，而正火+油淬+低温回火后的组织为回火马氏体；淬火前的正火处理可有效地细化铁素体晶粒和碳化物，进而提高细晶强化和析出强化对强度的贡献；较低的回火温度显著提高了实验钢的强度，其主要强化机制是细晶强化和位错强化，但严重牺牲了冲击韧性；油淬+高温回火后实验钢中的多边形铁素体较好地抑制了裂纹的扩展，冲击韧性较高，正火+油淬+高温回火后实验钢的针状铁素体具有较小的裂纹扩展阻力，导致冲击韧性降低，正火+油淬+低温回火后实验钢中的回火马氏体具有较高的残余应力，导致裂纹容易萌生和扩展，所以冲击韧性最低。

关键词(KeyWords)： 42CrMoVRE钢;显微组织;拉伸性能;强化机制;冲击韧性

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大项目(J2019-VI-0019-0134);; 国家自然科学基金(52001310);; 中国科学院战略性先导科技专项(XDC04040502)

作者(Author): 刘帅,颜莹,王斌,张鹏,周相海,郑雷刚,胡小强,李小武,张哲峰

DOI: 10.13289/j.issn.1009-6264.2022-0601

参考文献(References)：

• [1] 连法增.工程材料学[M].沈阳：东北大学出版社，2005.
• [2] 《袖珍世界钢号手册》编写组.通用钢铁材料[M].北京：机械工业出版社，2011.
• [3] 邢嘉倪，蔡欣，郑雷刚，等.淬火及回火温度对新型中碳合金钢42CrMo4M 组织性能的影响[J].材料热处理学报，2022,43(5):124-133.XING Jia-ni,CAI Xin,ZHENG Lei-gang,et al.Effect of quenching and tempering temperature on microstructure and mechanical properties of a new medium carbon alloy steel 42CrMo4M[J].Transactions of Materials and Heat Treatment,2022,43(5):124-133.
• [4] Laxmi B,Sharma S,Jayashree P K,et al.Quenchant oil viscosity and tempering temperature effect on mechanical properties of 42CrMo4 steel[J].Journal of Materials Research and Technology,2022,16:581-58.
• [5] Liu H H,Fu P X,Liu H W,et al.Microstructure evolution and mechanical properties in 718H pre-hardened mold steel during tempering[J].Materials Science and Engineering A,2018,709:181-192.
• [6] 陈俊丹，莫文林，王培，等.回火温度对42CrMo钢冲击韧性的影响[J].金属学报，2012,48(10):1186-1193.CHEN Jun-dan,MO Wen-lin,WANG Pei,et al.Effects of tempering temperature on the impact toughness of steel 42CrMo[J].Acta Metallurgica Sinica,2012,48(10):1186-1193.
• [7] Samadian P,Parsa M H,Shakeri A.Determination of proper austenitization temperatures for hot stamping of AISI 4140 steel[J].Journal of Materials Engineering and Performance,2014,23(4):1138-1145.
• [8] 刘国亮，唐梦兰，李栋，等.42CrMo钢回火组织演变及屈服强度预测[J].材料热处理学报，2020,41(7):144-150.LIU Guo-liang,TANG Meng-lan,LI Dong,et al.Microstructural evolution and yield strength prediction of quench-tempered 42CrMo steel[J].Transactions of Materials and Heat Treatment,2020,41(7):144-150.
• [9] 李运辉，刘新波，朱林林.钒强化对曲轴用钢42CrMoA淬透性影响研究[J].特钢技术，2020,26(1):39-44.LI Yun-hui,LIU Xin-bo,ZHU Lin-lin.Research on hardenability of 42CrMoA steel for engine crankshaft strengthening by vanadium[J].Special Steel Technology,2020,26(1):39-44.
• [10] 袁麟，郑雷刚，胡小强，等.微量Ce元素对42CrMo易切削钢切削性能的影响[J].沈阳理工大学学报，2022,41(5):76-80.YUAN Lin,ZHENG Lei-gang,HU Xiao-qiang,et al.Effect of trace Ce on the cutting performance of 42CrMo free-cutting steel[J].Journal of Shenyang Ligong University,2022,41(5):76-80.
• [11] 马东良，刘佳佳，马东辉，等.La微合金化对42CrMo组织与性能的影响[J].中国重型装备，2017(3):31-33.MA Dong-liang,LIU Jia-jia,MA Dong-hui,et al.Influence of La microalloying on structure and performance of 42CrMo[J].China Heavy Equipment,2017(3):31-33.
• [12] Kuo H H,Umemoto M,Sugita K,et al.Model for predicting phase transformation and yield strength of vanadium microalloyed carbon steels[J].ISIJ International,2012,52(4):669-678.
• [13] 王龙妹.稀土元素在新一代高强韧钢中的作用和应用前景[J].中国稀土学报，2004,22(1):48-54.WANG Long-mei.Application prospects and behavior of re in new generation high strength steels with superior toughness[J].Journal of the Chinese Rare Earth Society,2004,22(1):48-54.
• [14] Geng R,Li J,Shi C B,et al.Effect of Ce on microstructures,carbides and mechanical properties in simulated coarse-grained heat-affected zone of 800 MPa high-strength low-alloy steel[J].Materials Science and Engineering A,2022,840:142919.
• [15] 蒋波.盾构机轴承套圈用钢变形与热处理组织性能研究[D].北京：北京科技大学，2016.JIANG Bo.Investigation of microstructure and properties of bearing ring steel for shield tunneling machine during deformation and heat treatment process[D].Beijing:University of Science and Technology Beijing,2016.
• [16] 吴长江.厚大断面42CrMo钢表淬工艺与性能研究[D].沈阳：沈阳工业大学，2022.WU Chang-jiang.Study on surface quenching technology and properties of thick and large section 42CrMo steel[D].Shenyang:Shenyang University of Technology,2022.
• [17] Matlock D K,Kang S,De Moor E,et al.Applications of rapid thermal processing to advanced high strength sheet steel developments[J].Materials Characterization,2020,166:110397.
• [18] 张沈洁，李瑞卿，孔春花，等.42CrMo钢驱动轮轴的感应热处理[J].金属热处理，2016,41(1):43-47.ZHANG Shen-jie,LI Rui-qing,KONG Chun-hua,et al.Induction hardening of 42CrMo steel driving axle[J].Heat Treatment of Metals,2016,41(1):43-47.
• [19] 顾俊杰，秦优琼，陈志林，等.42CrMo钢高频感应淬火及回火对组织及硬度的影响[J].热加工工艺，2010,39(22):160-162.GU Jun-jie,QIN You-qiong,CHEN Zhi-lin,et al.Effects of high frequency induction heating quenching and tempering on microstructure and hardness of 42CrMo steel[J].Hot Working Technology,2010,39(22):160-162.
• [20] 孙宸.厚大断面42CrMo4钢组织调控与强韧化机制研究[D].合肥：中国科学技术大学，2021.SUN Chen.Study on microstructure control and strengthening-toughening mechanism of 42CrMo4 steel with large cross-section[D].Hefei:University of Science and Technology of China,2021.
• [21] Zhang J T,Liu Z H,Sun J X,et al.Microstructure and mechanical property of electropulsing tempered ultrafine grained 42CrMo steel[J].Materials Science and Engineering A,2020,782:139213.
• [22] Park S J,Kim K S,Kang J H,et al.Effects of carbon and nitrogen on Hall-Petch relationship in austenitic stainless steel[J].Journal of Materials Research and Technology,2022,19:2960-2964.
• [23] Lu J,Yu H,Duan X N,et al.Study of deformation behavior and microstructural evolution in multiphase steel[J].Materials,2018,11(11):2285.
• [24] 王国栋.新一代控制轧制和控制冷却技术与创新的热轧过程[J].东北大学学报(自然科学版),2009,30(7):913-922.WANG Guo-dong.New generation TMCP and innovative hot rolling process[J].Journal of Northeastern University:Natural Science,2009,30(7):913-922.
• [25] Muga C O,Zhang Z W.Strengthening mechanisms of magnesium-lithium based alloys and composites[J].Advances in Materials Science and Engineering,2021,2016:1078187.
• [26] Gao H,Huang Y,Nix W D,et al.Mechanism-based strain gradient plasticity-I.Theory[J].Journal of the Mechanics and Physics of Solids,1999,47(6):1239-1263.
• [27] Kubin L P,Mortensen A.Geometrically necessary dislocations and strain-gradient plasticity:A few critical issues[J].Scripta Materialia,2003,48(2):119-125.
• [28] 李振江，肖纳敏，李殿中，等.G18CrMo2-6钢回火组织及冲击韧性研究[J].金属学报，2014,50(7):777-786.LI Zhen-jiang,XIAO Na-min,LI Dian-zhong,et al.Influence of microstructure on impact toughness of G18CrMo2-6 steel during tempering[J].Acta Metallurgica Sinica,2014,50(7):777-786.
• [29] Sun J,Wei S T,Lu S P.Influence of vanadium content on the precipitation evolution and mechanical properties of high-strength Fe-Cr-Ni-Mo weld metal[J].Materials Science and Engineering A,2020,772:138739.
• [30] 邓亚辉，杨银辉，蒲超博，等.Mn对23%Cr节Ni型双相不锈钢高温拉伸行为的影响[J].金属学报，2020,56(7):949-959.DENG Ya-hui,YANG Yin-hui,PU Chao-bo,et al.Effect of Mn addition on high temperature tensile behavior of 23%Cr low nickel type duplex stainless steel[J].Acta Metallurgica Sinica,2020,56(7):949-959.
• [31] Yang Y H,Yu J J,Sun X F,et al.Investigation of impact toughness of a Ni-based superalloy at elevated temperature[J].Materials & Design,2012,36:699-704.

文章评论(Comment)：