金属热处理 ›› 2025, Vol. 50 ›› Issue (10): 185-191.DOI: 10.13251/j.issn.0254-6051.2025.10.029

• 工艺研究 • 上一篇    下一篇

热处理工艺对超级13Cr马氏体不锈钢组织与性能的影响

邵俊豪1,2, 王世清1, 李方坡2   

  1. 1.西安石油大学 材料科学与工程学院, 陕西 西安 710065;
    2.中国石油集团工程材料研究院有限公司, 陕西 西安 710077
  • 收稿日期:2025-04-18 修回日期:2025-08-06 出版日期:2025-10-25 发布日期:2025-11-04
  • 通讯作者: 王世清(1980—),博士,E-mail: sqwang@xsyu.edu.cn
  • 作者简介:邵俊豪(2000—),男,硕士,主要研究方向为马氏体不锈钢,E-mail: 19829316850@163.com。
  • 基金资助:
    国家自然科学基金(51975469, 52475401)

Influence of heat treatment processes on microstructure and properties of super 13Cr martensitic stainless steel

Shao Junhao1,2, Wang Shiqing1, Li Fangpo2   

  1. 1. School of Materials Science and Engineering, Xi'an Shiyou University, Xi'an Shaanxi 710065, China;
    2. Tubular Goods Research Institute of CNPC, Xi'an Shaanxi 710077, China
  • Received:2025-04-18 Revised:2025-08-06 Online:2025-10-25 Published:2025-11-04

摘要: 对超级13Cr马氏体不锈钢进行了不同的亚温淬火+回火和淬火+回火处理,采用扫描电镜(SEM)、X射线衍射仪(XRD)、拉伸试验、硬度测试和低温冲击试验等手段,研究了亚温淬火后产生的铁素体对超级13Cr马氏体不锈钢中逆转变奥氏体含量的影响,同时研究了铁素体与逆转变奥氏体对其力学性能的影响。结果表明:经888 ℃×1 h水淬+620 ℃×6 h回火+610 ℃×3 h回火后,超级13Cr马氏体不锈钢的逆转变奥氏体含量最高,屈服强度与硬度最低,-46 ℃低温冲击性能最好。铁素体能提高超级13Cr马氏体不锈钢的逆转变奥氏体含量,铁素体与逆转变奥氏体会降低硬度,同时对冲击性能有极大的提升,在同等回火条件下,亚温淬火的-46 ℃低温冲击吸收能量相较于淬火最高提升近400%。

关键词: 超级马氏体不锈钢, 逆转变奥氏体, 亚温淬火, 二次回火

Abstract: Super 13Cr martensitic stainless steel (13Cr SMSS) was subjected to different subcritical quenching+tempering and quenching+tempering processes. The effect of the subcritical quenching-induced ferrite on the content of reversed austenite in the 13Cr SMSS was investigated by using scanning electron microscope, X-ray diffractometer, tensile testing, hardness testing and low-temperature impact testing, as well as the effects of ferrite and reversed austenite on its mechanical properties. The results show that after subcritical quenching at 888 ℃ for 1 h with water quenching and tempering at 620 ℃ for 6 h and 610 ℃ for 3 h, 13Cr SMSS has the highest content of reversed austenite, the lowest yield strength and hardness, and the best low-temperature impact performance at -46 ℃. Ferrite can increase the content of reversed austenite in super 13Cr martensitic stainless steel. Both ferrite and reversed austenite can reduce the hardness, while significantly improve the impact performance. Under the same tempering conditions, the low-temperature impact absorbed energy at -46 ℃ of the subcritical quenching steel is increased by nearly 400% compared with that of conventional quenching.

Key words: super martensite stainless steel, reversed austenite, subcritical quenching, double tempering

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