回火温度对55NiCrMoV7热作模具钢组织和性能的影响

doi:10.13251/j.issn.0254-6051.2023.01.023

金属热处理 ›› 2023, Vol. 48 ›› Issue (1): 133-138.DOI: 10.13251/j.issn.0254-6051.2023.01.023

回火温度对55NiCrMoV7热作模具钢组织和性能的影响

元亚莎^1,2, 汪雨昌², 王文焱¹, 石如星², 元莎³, 张玉栋²

1.河南科技大学材料科学与工程学院, 河南洛阳 471023;
2.洛阳中重铸锻有限责任公司, 河南洛阳 471039;
3.中国机械总院集团北京机电研究所有限公司, 北京 100083

收稿日期:2022-08-15 修回日期:2022-11-09 出版日期:2023-01-25 发布日期:2023-02-03
通讯作者: 王文焱,教授,博士,E-mail:wangwy1963@163.com
作者简介:元亚莎(1991—),女,工程师,博士研究生,主要研究方向为金属材料热处理工艺及新型模具钢的开发,E-mail:15138753540@163.com。
基金资助:
国家重点研发计划(2020YFB2008400)

Effect of tempering temperature on microstructure and mechanical properties of 55NiCrMoV7 hot working die steel

Yuan Yasha^1,2, Wang Yuchang², Wang Wenyan¹, Shi Ruxing², Yuan Sha³, Zhang Yudong²

1. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang Henan 471023, China;
2. Luoyang CITIC HIC Casting and Forging Co., Ltd., Luoyang Henan 471039, China;
3. Beijing Research Institute of Mechanical and Electrical Technology Co., Ltd., CAM, Beijing 100083, China

Received:2022-08-15 Revised:2022-11-09 Online:2023-01-25 Published:2023-02-03

摘要/Abstract

摘要： 采用Formastor-FⅡ型膨胀仪测量55NiCrMoV7钢不同速度连续冷却时的膨胀曲线,利用膨胀法与金相—硬度法,确定相变温度点,并绘制出钢的CCT曲线,采用扫描电镜(SEM)、光学显微镜(OM)、洛氏硬度计、拉伸试验机和冲击试验机研究回火温度对55NiCrMoV7钢显微组织和力学性能的影响。结果表明,在520~600 ℃回火时,随着回火温度的升高,强硬度逐渐降低,塑韧性逐渐提高,回火温度在560~580 ℃时,由淬火产生的应力基本消除,马氏体分解、残留奥氏体转变基本完成。此时抗拉强度达到1300 MPa 左右,断后伸长率达到14.5%,冲击吸收能量达到30 J以上,综合力学性能最佳。

关键词: 55NiCrMoV7热作模具钢, 回火温度, 显微组织, 力学性能, 断口形貌

Abstract: The expansion curves of 55NiCrMoV7 steel during continuous coolingwith different speeds were measured by using Formastor-FII dilatometer, and the phase transformation temperature points were determined by expansion method and metallographic-hardness method, and then the CCT curves of the steel were drawn. Effect of tempering temperature on microstructure and mechanical properties of the 55NiCrMoV7 steel were studied by means of scanning electron microscope (SEM), optical microscope (OM), Rockwell hardness tester, tensile tester and impact tester. The results show that when the tempering temperature is in the range of 520-600 ℃, as tempering temperature increases, both the hardness and tensile strength of the 55NiCrMoV7 steel decrease, while the plasticity and toughness gradually increase. When the tempering temperature is 560-580 ℃, the hardening stress of the material is basically eliminated, martensite decomposing and retained austenite transformation is basically complete. The preferable mechanical properties of the 55NiCrMoV7 steel are obtained, with tensile strength, elongation and impact absorbed energy of 1300 MPa, 14.5% and more than 30 J, respectively.

Key words: 55NiCrMoV7 hot working die steel, tempering temperature, microstructure, mechanical properties, fracture morphology

中图分类号:

TG142.45

元亚莎, 汪雨昌, 王文焱, 石如星, 元莎, 张玉栋. 回火温度对55NiCrMoV7热作模具钢组织和性能的影响[J]. 金属热处理, 2023, 48(1): 133-138.

Yuan Yasha, Wang Yuchang, Wang Wenyan, Shi Ruxing, Yuan Sha, Zhang Yudong. Effect of tempering temperature on microstructure and mechanical properties of 55NiCrMoV7 hot working die steel[J]. Heat Treatment of Metals, 2023, 48(1): 133-138.

参考文献

[1]张占平, 齐育红, Delagnes D, 等. 55NiCrMoV7钢的回火组织与性能[J]. 金属热处理, 2004, 29(3): 27-31.
Zhang Zhanping, Qi Yuhong, Delagnes D, et al. Microstructure and properties of 55NiCrMoV7 during tempering[J]. Heat Treatment of Metals, 2004, 29(3): 27-31.
[2]禹兴胜, 武川, 石如星, 等. 55NiCrMoV7模具钢锻造过程微观组织演化实验与模拟仿真[J]. 塑性工程学报, 2021, 28(6): 174-184.
Yu Xingsheng, Wu Chuan, Shi Ruxing, et al. Microstructure evolution of 55NiCrMoV7 die steel during forging processing: Experiment and simulation[J]. Journal of Plasticity Engineering, 2021, 28(6): 174-184.
[3]吴晓春, 施渊吉. 热锻模材料的发展现状与趋势[J]. 模具工业, 2015, 41(8): 1-10.
Wu Xiaochun, Shi Yuanji. Development status and trend of hot forging die materials[J]. Die and Mould Industry, 2015, 41(8): 1-10.
[4]Yu Xingsheng, Wu Chuan, Shi Ruxing, et al. microstructural evolution and mechanical properties of 55NiCrMoV7 die steel during heat treatments[J]. Advances in Manufacturing, 2021, 9: 520-537.
[5]樊梦婷, 孙明月, 李殿中. 大型压力机模座热处理过程模拟及工艺优化[J]. 材料工程, 2011(11): 44-49.
Fan Mengting, Sun Mingyue, Li Dianzhong. Simulation and optimization of heat treatment process for large press die holder[J]. Journal of Materials Engineering, 2011(11): 44-49.
[6]张明玉, 运新兵, 伏洪旺. 不同热处理工艺对TC10钛合金组织及性能的影响[J]. 塑性工程学报, 2021, 28(12): 237-245.
Zhang Mingyu, Yun Xinbing, Fu Hongwang. Effect of different heat treatment on the organization and performance of TC10 titanium alloy[J]. Journal of Plasticity Engineering, 2021, 28(12): 237-245.
[7]张丽娜, 王长春, 解福祥, 等. 回火温度对42CrMo齿轮钢[J]. 热加工工艺, 2022, 51(4): 143-145.
Zhang Lina, Wang Changchun, Xie Fuxiang, et al. Effects of tempering temperature on microstructure and mechanical properties of 42CrMo gear steel[J]. Hot Working Technology, 2022, 51(4): 143-145.
[8]李璞, 魏世忠, 张程, 等. 回火温度对3Cr3Mo2NiW钢力学性能和断口形貌的影响[J]. 金属热处理, 2020, 45(6): 22-27.
Li Pu, Wei Shizhong, Zhang Cheng, et al. Effect of tempering temperature on mechanical properties and fracture morphology of 3Cr3Mo2NiW steel[J]. Heat Treatment of Metals, 2020, 45(6): 22-27.
[9]梁晓东, 吕加伟, 闫浩, 等. 回火温度对C61齿轮钢显微组织和力学性能的影响[J]. 材料热处理学报, 2022, 43(1): 84-91.
Liang Xiaodong, Lü Jiawei, Yan Hao, et al. Effect of tempering temperature on microstructure and mechanical properties of C61 gear steel[J]. Transactions of Materials and Heat Treatment, 2022, 43(1): 84-91.
[10]Wang Jian, Xu Zinuo, Lu Xiaofeng. Effect of the quenching and tempering temperatures on the microstructure and mechanical properties of H13 steel[J]. Journal of Materials Engineering and Performance, 2020(29): 1849-1859.
[11]Terent'ev V F, Blinova E N, Seval'neva T G, et al. Effect of the tempering temperature on the structure and the mechanical behavior of VNS9-Sh TRIP steel with a high martensite content[J]. Russian Metallurgy (Metally), 2020(4): 408-415.
[12]拓川, 王敏, 赵坤, 等. TC17钛合金表面自纳米化及拉伸试样断口形貌[J]. 塑性工程学报, 2013, 20(3): 111-115.
Tuo Chuan, Wang Min, Zhao Kun, et al. Surface self-nanocrystallization and tensile specimen fracture morphology of TC17[J]. Journal of Plasticity Engineering, 2013, 20(3): 111-115.

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回火温度对55NiCrMoV7热作模具钢组织和性能的影响

Effect of tempering temperature on microstructure and mechanical properties of 55NiCrMoV7 hot working die steel

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