金属热处理 ›› 2022, Vol. 47 ›› Issue (5): 14-24.DOI: 10.13251/j.issn.0254-6051.2022.05.003

• 材料研究 • 上一篇    下一篇

新型含Al奥氏体耐热钢高温蠕变性能的研究现状

袁智1,2, 张海莲3, 张会杰1,2, 马庆爽1,2, 贺翔3, 毕长波4, 李会军5, 高秋志1,2   

  1. 1.东北大学秦皇岛分校 资源与材料学院, 河北 秦皇岛 066004;
    2.东北大学 轧制技术及连轧自动化国家重点实验室, 辽宁 沈阳 110819;
    3.秦皇岛市道天高科技有限公司, 河北 秦皇岛 066010;
    4.东北大学秦皇岛分校 控制工程学院, 河北 秦皇岛 066004;
    5.天津大学 材料科学与工程学院, 天津 300354
  • 收稿日期:2022-01-08 修回日期:2022-02-27 出版日期:2022-05-25 发布日期:2022-06-16
  • 通讯作者: 张海莲,工程师,E-mail: hailianchina@126.com
  • 作者简介:袁 智(1998—),男,硕士研究生,主要研究方向为马氏体耐热钢,E-mail: zsby0902@163.com。
  • 基金资助:
    国家自然科学基金钢铁联合研究基金重点项目(U1960204);国家自然科学基金面上项目(51871042);中央高校基本科研业务费(N2023026)

Research status of high-temperature creep properties of novel alumina-forming austenitic heat-resistant steel

Yuan Zhi1,2, Zhang Hailian3, Zhang Huijie1,2, Ma Qingshuang1,2, He Xiang3, Bi Changbo4, Li Huijun5, Gao Qiuzhi1,2   

  1. 1. School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao Hebei 066004, China;
    2. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang Liaoning 110819, China;
    3. Qinhuangdao Daotian High Technology Co., Ltd., Qinhuangdao Hebei 066010, China;
    4. School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao Hebei 066004, China;
    5. School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China
  • Received:2022-01-08 Revised:2022-02-27 Online:2022-05-25 Published:2022-06-16

摘要: 新型含Al奥氏体耐热钢(Alumina-forming austenitic steel-AFA钢)是近年来开发的新型耐热钢,具有比传统耐热钢更优异的高温抗氧化性与蠕变性能,可望应用于超超临界火力发电机组关键部件。从不同AFA钢的合金元素调控入手,阐述了AFA钢成分设计原则,分析了合金元素差异对析出相的影响,以期揭示析出相的析出与粗化动力学及其与蠕变性能间的关系,总结了高温蠕变断裂机制,讨论了影响材料蠕变性能的因素,并对AFA钢的强化思路与未来应用进行了展望。

关键词: AFA钢, 合金元素, 析出相, 动力学, 高温蠕变断裂机制

Abstract: Novel alumina-forming austenitic steel (AFA steel) is a new type of heat-resistant steel developed in recent years. It has better high-temperature oxidation resistance and creep properties than traditional heat-resistant steel, and is expected to be used in key components of ultra-supercritical units. Starting from the regulation of alloying elements of different AFA steels, the design principles of AFA steel was expounded, the influence of alloying element difference on precipitated phase was analyzed, in order to reveal the precipitation and coarsening kinetics and the relationship between creep properties and coarsening kinetics of precipitated phase, and the creep fracture mechanism at elevated temperature was summarized and the potential factors that affected the creep properties were discussed. The strengthening idea and future application of AFA steel were also prospected.

Key words: AFA steel, alloying element, precipitated phase, kinetics, high-temperature creep fracture mechanism

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