热处理对27CrMnSi低合金耐磨钢组织和性能的影响

doi:10.13251/j.issn.0254-6051.2023.12.013

金属热处理 ›› 2023, Vol. 48 ›› Issue (12): 87-91.DOI: 10.13251/j.issn.0254-6051.2023.12.013

热处理对27CrMnSi低合金耐磨钢组织和性能的影响

胡敏¹, 刘初升², 王胜淇³

1.江苏联合职业技术学院徐州技师分院, 江苏徐州 221000;
2.中国矿业大学机电工程学院, 江苏徐州 221116;
3.徐州金虹钢铁集团有限公司, 江苏徐州 221636

收稿日期:2023-06-20 修回日期:2023-10-16 出版日期:2023-12-25 发布日期:2024-01-29
作者简介:胡敏(1986—),女,高级讲师,硕士,主要研究方向为材料成型与机电控制,E-mail:humin106@163.com
基金资助:
徐州市重点研发计划(KC22431)

Effect of heat treatment on microstructure and properties of 27CrMnSi low alloy wear-resistant steel

Hu Min¹, Liu Chusheng², Wang Shengqi³

1. Xuzhou Technician Branch, Jiangsu Union Technical Institute, Xuzhou Jiangsu 221000, China;
2. School of Mechatronic Engineering, China University of Mining & Technology, Xuzhou Jiangsu 221116, China;
3. Xuzhou Jinhong Iron and Steel Group Co., Ltd., Xuzhou Jiangsu 221636, China

Received:2023-06-20 Revised:2023-10-16 Online:2023-12-25 Published:2024-01-29

摘要/Abstract

摘要： 采用二次淬火工艺(940 ℃水淬+870 ℃水淬)对27CrMnSi低合金耐磨钢进行热处理。通过SU8200扫描电镜、JBD-300B冲击试验机、TH300洛氏硬度计、M-2000磨损试验机等测试方法,对显微组织、表面硬度、冲击性能及磨损率进行分析,以探究热处理工艺对27CrMnSi钢显微组织及性能的影响规律。结果表明,二次淬火后试验钢的平均硬度达到了52.4 HRC,冲击吸收能量达到了18.37 J,平均磨损率不超过4%,其性能高于目前市场上的低合金耐磨钢。此外,二次淬火处理后27CrMnSi钢的马氏体组织更细小,试样的断口形貌为小的韧窝结构,分布均匀。

关键词: 27CrMnSi钢, 二次淬火工艺, 冲击性能, 显微组织

Abstract: 27CrMnSi low-alloy wear-resistant steel was heat-treated by secondary quenching process (940 ℃, water-cooling +870 ℃, water-cooling). The microstructure, surface hardness, impact property and wear rate were analyzed to investigate the influence law of heat treatment process on microstructure and properties of the 27CrMnSi steel, by means of SU8200 scanning electron microscopy, JBD-300B impact tester, TH300 Rockwell hardness tester and M-2000 wear tester. The results show that the average hardness of the 27CrMnSi steel reaches 52.4 HRC, the impact absorbed energy reaches 18.37 J, and the average wear rate is less than 4% after secondary quenching. The properties of the 27CrMnSi steel are higher than those of low alloy wear resistant steel on the market. In addition, the martensite structure of the 27CrMnSi steel after secondary quenching treatment is finer, and the fracture morphology is a fine dimple structure with uniform distribution.

Key words: 27CrMnSi steel, secondary quenching process, impact property, microstructure

中图分类号:

TG442

胡敏, 刘初升, 王胜淇. 热处理对27CrMnSi低合金耐磨钢组织和性能的影响[J]. 金属热处理, 2023, 48(12): 87-91.

Hu Min, Liu Chusheng, Wang Shengqi. Effect of heat treatment on microstructure and properties of 27CrMnSi low alloy wear-resistant steel[J]. Heat Treatment of Metals, 2023, 48(12): 87-91.

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热处理对27CrMnSi低合金耐磨钢组织和性能的影响

Effect of heat treatment on microstructure and properties of 27CrMnSi low alloy wear-resistant steel

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