• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2026, Vol. 62 ›› Issue (2): 229-237.doi: 10.3901/JME.260050

• 材料科学与工程 • 上一篇    

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0Cr13Ni4Mo超级马氏体不锈钢回火过程奥氏体逆相变研究

李德钲1,2, 宋逸思1, 王一伟1, 廖瑜1, 韩利战1,2, 顾剑锋1,2   

  1. 1. 上海交通大学激光制造与材料改性重点实验室 上海 200240;
    2. 大型铸锻件先进制造技术及装备国家工程研究中心 德阳 618000
  • 收稿日期:2024-12-26 修回日期:2025-07-21 发布日期:2026-03-02
  • 作者简介:李德钲,男,1999年出生。主要研究方向为超级马氏体不锈钢组织与性能。E-mail:moonstone@sjtu.edu.cn;韩利战,男,1970年出生,博士,高级工程师。主要研究方向为热处理工艺及数值模拟。E-mail:victory_han@sjtu.edu.cn
  • 基金资助:
    大型铸锻件先进制造技术及装备国家工程研究中心(二重(德阳)重型装备有限公司)开放课题资助项目。

Study on Austenite Reverse Transformation of 0Cr13Ni4Mo Super Martensitic Stainless Steel during Tempering Process

LI Dezheng1,2, SONG Yisi1, WANG Yiwei1, LIAO Yu1, HAN Lizhan1,2, GU Jianfeng1,2   

  1. 1. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240;
    2. National Engineering Research Center for Advanced Manufacturing Technology and Equipment of Heavy Castings and Forgings, Deyang 618000
  • Received:2024-12-26 Revised:2025-07-21 Published:2026-03-02

摘要: 逆转变奥氏体对0Cr13Ni4Mo超级马氏体不锈钢的性能调控起着关键作用,但目前其形成机制仍不够明确,缺乏相变动力学数据。研究0Cr13Ni4Mo超级马氏体不锈钢回火过程中奥氏体逆相变的规律和机制,建立540~640℃回火时奥氏体逆相变的动力学方程。结果表明,回火过程中Ni、Mn元素通过上坡扩散的方式富集,促使奥氏体逆相变发生,随着回火温度升高,逆转变奥氏体的量增加,同时其内部Ni、Mn元素富集程度不断下降,导致其Ms点上升,热稳定性不断下降。回火温度高于600℃时,部分逆转变奥氏体在回火冷却过程中转变为新鲜马氏体,因此在此回火温度下能获得室温下的最大逆转变奥氏体量22.21%。研究结果为超级马氏体不锈钢中逆转变奥氏体量的预测和实际生产中热处理工艺的制定提供了理论指导。

关键词: 超级马氏体不锈钢, 回火, 奥氏体逆相变, 相变动力学

Abstract: Reversed austenite plays a key role in the performance regulation of 0 Cr13 Ni4 Mo super martensitic stainless steel, but its phase formation mechanism is still not clear, and the kinetics data are also lacking. The law and mechanism of austenite reverse phase transformation during tempering of 0 Cr13 Ni4 Mo super martensitic stainless steel are studied, and the kinetic equation of austenite reverse phase transformation during tempering at 540-640 ℃ is established. The results show that Ni and Mn elements are enriched by uphill diffusion during tempering, which promotes the reverse phase transformation of austenite. With the increase of tempering temperature, the amount of reversed austenite increases, and the enrichment degree of Ni and Mn elements in it decreases continuously, which leads to the increase of Ms point and the decrease of thermal stability. When the tempering temperature is higher than 600 ℃, part of the reversed austenite transforms into fresh martensite during the tempering cooling process. So the maximum amount of reversed austenite at room temperature can be obtained at this tempering temperature 22.21%. The results provide theoretical guidance for the prediction of the amount of reversed austenite in super martensitic stainless steel and the formulation of heat treatment process in actual production.

Key words: super martensite stainless steel, tempering, austenite reverse transformation, transformation kinetics

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