高性能NM450耐磨钢的研发

doi:10.13251/j.issn.0254-6051.2026.02.011

金属热处理 ›› 2026, Vol. 51 ›› Issue (2): 72-76.DOI: 10.13251/j.issn.0254-6051.2026.02.011

高性能NM450耐磨钢的研发

陈敏侠, 钱亚军, 易春洪

湘潭钢铁集团有限公司, 湖南湘潭 411101

收稿日期:2025-08-22 修回日期:2025-12-12 发布日期:2026-03-05
作者简介:陈敏侠(1984—),女,高级工程师,硕士,主要从事中厚板研发及生产质量控制工作,E-mail:087523@mail.hnxg.com.cn
基金资助:
国家重点研发计划(2017YFB0305100)

Research and development of a high performance NM450 wear-resistant steel

Chen Minxia, Qian Yajun, Yi Chunhong

Xiangtan Iron and Steel Group Co., Ltd., Xiangtan Hunan 411101, China

Received:2025-08-22 Revised:2025-12-12 Published:2026-03-05

摘要/Abstract

摘要： 采用C、Mn、B及少量Cr、Mo合金元素的成分体系,配以Nb、Ti、Al的析出强化,通过高纯净度冶炼严格控制钢水中的P、S、H、N、O等元素,结合合理的轧制及热处理工艺,成功开发出显微组织为回火马氏体的NM450耐磨钢板,其表面硬度在470~490 HV10,屈服强度≥1225 MPa,抗拉强度≥1477 MPa,伸长率≥14.0%,-40 ℃冲击吸收能量≥50 J,全厚度磨损量较低,耐磨性良好。

关键词: 耐磨钢, 高强韧性, 硬度, 耐磨性

Abstract: Using a composition system of C, Mn, B and a small amount of Cr, Mo alloying elements, combined with precipitation strengthening of Nb, Ti, Al, and strict control of P, S, H, N, O and other elements in the molten steel through high-purity smelting, followed with reasonable rolling and heat treatment processes, the NM450 wear-resistant steel plate with tempered martensite microstructure was successfully developed. The results show that surface hardness of the NM450 steel plate is 470-490 HV10, the yield strength is ≥1225 MPa, the tensile strength is ≥1477 MPa, the elongation is ≥14.0%, the impact absorbed energy at -40 ℃ is ≥50 J, and the full thickness wear loss is relatively low, exhibiting good wear resistance.

Key words: wear-resistant steel, high strength and toughness, hardness, wear resistance

中图分类号:

TG142.72

陈敏侠, 钱亚军, 易春洪. 高性能NM450耐磨钢的研发[J]. 金属热处理, 2026, 51(2): 72-76.

Chen Minxia, Qian Yajun, Yi Chunhong. Research and development of a high performance NM450 wear-resistant steel[J]. Heat Treatment of Metals, 2026, 51(2): 72-76.

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高性能NM450耐磨钢的研发

Research and development of a high performance NM450 wear-resistant steel

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