Effect of heat treatment process on microstructure and mechanical properties of 51CrV4 steel

doi:10.13251/j.issn.0254-6051.2020.02.019

Abstract

Abstract:

The effects of quenching+tempering and isothermal quenching on the microstructure, mechanical properties and fatigue properties of 51CrV4 steel were studied. The results show that compared with the traditional quenching+tempering process, the microstructure of the 51CrV4 steel after isothermal quenching treatment is multiphase of lower bainite+martensite+residual austenite, the tensile strength, elongation after fracture, fracture toughness and fatigue limit is increased by 14%, 24%, 34% and 15%, respectively. The comprehensive mechanical properties of high strength, high plasticity, high toughness and excellent fatigue performance are obtained.

Key words: 51CrV4 steel, strength toughness, isothermal quenching, fracture toughness, fatigue performance

CLC Number:

TG142.1

Zhang Wei, Xu Zhou, Gao Donghong, Liu Chao. Effect of heat treatment process on microstructure and mechanical properties of 51CrV4 steel[J]. HTM, 2020, 45(2): 100-104.

References

[1]李永福, 葛夏文, 彭澎, 等. 复合强韧化处理CrWMn制钉模脆断机理研究[J]. 昆明理工大学学报, 2002, 27(5): 26-31.
Li Yongfu, Ge Xiawen, Peng Peng, et al. Study on the brittle fracture mechanism of CrWMn nail die by composite treatment[J]. Journal of Kunming University of Science and Technology, 2002, 27(5): 26-31.
[2]褚作明, 陈蕴博, 张福成. 先进超细化处理技术在钢铁材料中的应用[J]. 金属热处理, 2004, 29(1): 16-22.
Chu Zuoming, Chen Yunbo, Zhang Fucheng. Application of advanced ultrafine technology for steel[J]. Heat Treatment of Metals, 2004, 29(1): 16-22.
[3]王荣, 高浩, 魏德强. 中碳低合金钢液淬带温等温淬火工艺的优化[J]. 机械工程材料, 2017, 41(6): 34-38.
Wang Rong, Gao Hao, Wei Deqiang. Optimization for liquid quenching and isothermal quenching with temperature process of medium carbon alloy steel[J]. Materials for Mechanical Engineering, 2017, 41(6): 34-38.
[4]徐纪楠. 等温淬火在钢铁热处理中的应用及其展望[J]. 浙江大学学报, 1964(4): 14-23.
Xu Jinan. Application and prospect of isothermal quenching in heat treatment of iron and steel[J]. Journal of Zhejiang University, 1964(4): 14-23.
[5]王凯, 殷匠, 顾文俊, 等. 热处理对60Si2CrVAT弹簧钢组织和力学性能的影响[J]. 特殊钢, 2007, 28(6): 56-58.
Wang Kai, Yin Jiang, Gu Wenjun, et al. Effect of heat treatment on structure and mechanical properties of spring steel 60Si2CrVAT[J]. Special Steel, 2007, 28(6): 56-58.
[6]刘东雨, 方鸿生, 陈颜堂, 等. 1500 MPa级经济性贝氏体/马氏体复相钢的合金设计[J]. 金属热处理, 2000, 25(10): 1-5.
Liu Dongyu, Fang Hongsheng, Chen Yantang, et al. Alloy design of 1500 MPa grade economical bainite/martensite duplex phase steel[J]. Heat Treatment of Metals, 2000, 25(10): 1-5.
[7]王猛, 王立峰, 王全礼, 等. 等温时间对60Si2Mn钢下贝氏体组织性能的影响[J]. 材料热处理学报, 2014, 35(9): 146-150.
Wang Meng, Wang Lifeng, Wang Quanli, et al. Influence of isothermal time on microstructure and properties of low bainite in 60Si2Mn steel[J]. Transactions of Materials and Heat Treatment, 2014, 35(9): 146-150.
[8]聂义宏, 惠卫军, 傅万堂, 等. 等温处理对中碳超高强度弹簧钢组织与力学性能的影响[J]. 钢铁, 2008, 43(4): 75-79.
Nie Yihong, Hui Weijun, Fu Wantang, et al. Effect of isothermal heat treatment on microstructure and mechanical properties of a medium-carbon ultra high strength spring steel[J]. Iron and Steel, 2008, 43(4): 75-79.

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[3]	Hu Shengshuang, Shi Lili, He Kun, Zhao Gang, Wang Qing, Wang Wenbo, Wang Yaxing. Effect of tempering time on mechanical properties and microstructure of A-100 steel [J]. Heat Treatment of Metals, 2021, 46(2): 140-143.
[4]	Zhao Cuihua, Shu Xinxin, Yang Fan, Huang Jiangzhong, Li Lianbo, Liu Yanlei. Exemption criterion of post-weld heat treatment for offshore platform thick plate [J]. HTM, 2020, 45(2): 257-261.
[5]	Liu Jiahua, Wang Lei, Yang Yufang, Cui Junjun, Geng Haopeng. Effect of loading rate on fracture toughness of H-charged SA508-3 steel [J]. Heat Treatment of Metals, 2020, 45(10): 231-235.
[6]	Chen Guanghui, Wang Zhen, Hao Changli. Alloying and heat treatment of ductile cast iron for heavy duty vehicle crankshaft [J]. HTM, 2019, 44(1): 102-107.
[7]	Lu Fayun1, 2, Zhao Feng1, 2, Zhang Junli1, 2, Zhao Wei1, 2, Ding Qingwei1, 2. Microstructure and mechanical[增] properties of 7050 aluminum alloy plates with different thickness [J]. HTM, 2017, 42(4): 144-149.
[8]	Huang Zeting, He Yunhong. Isothermal quenching of a new kind of Cr-Mo-Ni-Mn-Si alloy steel [J]. HTM, 2016, 41(9): 148-152.
[9]	Wang Hua, Zhao Qi, Yin Hongxia. Effect of trace Ce on microstructure and mechanical properties of Al-Cu-Li alloy [J]. HTM, 2016, 41(7): 63-65.
[10]	Zhang Changying. Heat treatment of 18Cr2Ni4WA steel driven gear shaft [J]. HTM, 2016, 41(6): 135-138.
[11]	Liu Yilun1,2, Yi Jiuhuo1, Yang Dalian1, Li Songbai1, Tao Jie1. Effects of solution temperature on microstructure and high cycle fatigue performance of 7075 aluminum alloy [J]. HTM, 2016, 41(3): 1-7.
[12]	Fan Kailun1, Zou Gang2, Pei Lieyong1, Liu Yongde1,Xu Tao1. Effect of aging on properties of GH2132 alloy for engine bolt [J]. HTM, 2016, 41(1): 66-70.
[13]	Huang Zhengyang, Guo Zijing, Wen Guangping, Li Qing. Mechanical properties of TC4 alloy after different annealing process [J]. HTM, 2015, 40(9): 175-179.
[14]	Shang Haikun1，Huang Yongan2，Hou Yapeng2，Zhang Laiqi2，Lin Junpin2. Effects of Si content on microstructure and properties of intermetallic compounds for Mo-Si binary system [J]. HTM, 2015, 40(8): 26-29.
[15]	Wang Xiaohui1,2,Zhou Yun1, Liu Zhenbao2,Liang Jianxiong2, Zhang Boning2,3. Effect of normalizing temperature on microstructure and properties of ultra high strength stainless steel [J]. HTM, 2015, 40(10): 136-141.