| 热处理对9 Cr13 Mo3 Co3 Nb2 V组织与硬度的影响 |
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| 引用本文： | 霍登平,梁志凯.热处理对9 Cr13 Mo3 Co3 Nb2 V组织与硬度的影响[J].航空材料学报,2016(6):35-39. |
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| 作者姓名： | 霍登平 梁志凯 |
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| 作者单位： | 1. 西安飞行自动控制研究所 检测试验中心,西安,710065;2. 北京航空材料研究院,北京,100095 |
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| 摘 要： | 采用金相分析、硬度测试等技术手段，研究热处理对马氏体不锈钢9Cr13Mo3Co3Nb2V组织和硬度的影响。结果表明：9Cr13Mo3Co3Nb2V经淬火、冰冷处理及多次回火后，残余奥氏体充分转变为回火马氏体，并产生较强的二次硬化效果，进而获得稳定的组织和高的硬度；在350℃以上回火时，由于组织中二次碳化物的析出，开始出现二次硬化倾向，至480~520℃时，回火硬度达到了最大值。
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| 关 键 词： | 9Cr13Mo3Co3Nb2V钢 二次硬化 热处理 显微组织 硬度 |
Effect of Heat Treatment on Microstructure and Hardness of 9 Cr13 Mo3 Co3 Nb2 V Steel |
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| Abstract: | Effect of heat treatment on the microstructure and hardness of 9Cr13Mo3Co3Nb2V steel was studied systematically by metal-lographic examination and hardness testing. The results show that after quenching, cryogenic treatment and multiple tempering, the re-tained austenite of 9Cr13Mo3Co3Nb2V steel is adequately transformed into tempered martensite, and the significant secondary harden-ing effect is brought. Consequently the steel gains stable microstructure and high hardness. Secondary carbide begins to precipitate and the secondary hardening effect emerges when the tempering temperature is above 350℃, and the tempering hardness reaches the maxi-mum value when tempering temperature range is from 480 ℃ to 520 ℃. |
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| Keywords: | 9Cr13Mo3Co3Nb2V steel secondary hardening heat treatment microstructure hardness |
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