| 形变热处理工艺对403Nb马氏体耐热钢组织和性能的影响 |
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| 引用本文： | 曾周燏,崔青玲,陈礼清,朱伏先,刘相华.形变热处理工艺对403Nb马氏体耐热钢组织和性能的影响[J].中国冶金,2011,21(12):20-23. |
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| 作者姓名： | 曾周燏 崔青玲 陈礼清 朱伏先 刘相华 |
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| 作者单位： | 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 |
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| 基金项目： | 中央高校基本科研业务费(N100507003); 国家自然科学基金重点项目(50634030) |
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| 摘 要： | 403Nb是一种马氏体耐热不锈钢，主要用于制作火电机组汽轮机叶片，该钢是在AISI 403不锈钢的基础上，通过添加一定质量分数的Nb和V 发展起来的。通过与传统热处理工艺对比，研究了形变热处理工艺(即高温固溶后在奥氏体亚稳态区变形后空冷)对马氏体耐热钢403Nb的组织和性能的影响。结果表明：形变热处理可以使403Nb钢组织明显细化，马氏体板条宽度由传统热处理的0.3 μm减小到0.1 μm，而且生成大量弥散的纳米级MX碳化物。形变热处理对403Nb钢组织改变的直接结果是可以大幅度提高403Nb钢的屈服强度，在常温拉伸时由传统热处理的800 MPa提高到1 180 MPa，在高温(700 ℃)拉伸时由246.5 MPa提高到341.4 MPa，其屈服强度分别提高了47.55%和38.5%。
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| 关 键 词： | 403Nb 马氏体耐热钢 形变热处理 微观组织 力学性能 |
Effect of Thermo-Mechanical Treatment on Microstructure and Mechanical Properties of Martensitic Heat-Resistant Steel 403Nb |
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| ZENG Zhou-yu,CUI Qing-ling,CHEN Li-qing,ZHU Fu-xian,LIU Xiang-hua.Effect of Thermo-Mechanical Treatment on Microstructure and Mechanical Properties of Martensitic Heat-Resistant Steel 403Nb[J].China Metallurgy,2011,21(12):20-23. |
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| Authors: | ZENG Zhou-yu CUI Qing-ling CHEN Li-qing ZHU Fu-xian LIU Xiang-hua |
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| Affiliation: | ZENG Zhou-yu,CUI Qing-ling,CHEN Li-qing,ZHU Fu-xian,LIU Xiang-hua(State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,Liaoning,China) |
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| Abstract: | 403Nb is a kind of martensitic heat-resistant stainless steel which was developed from the traditional AISI 403 stainless steel by adding certain amount of Nb and V and widely used to manufacture the steam turbine blade of the heat-engine unit.Compared with the conventional normalizing and tempering treatment,thermo-mechanical treatment including normalization at elevated temperature,followed by warm-rolling in metastable austenitic phase region and subsequent air cooling has been investigated on 403Nb stee... |
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| Keywords: | 403Nb martensitic heat-resistant steel thermo-mechanical treatment microstructure mechanical property |
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