| T250钢离子渗氮后的组织和性能 |
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| 引用本文： | 周钟平,张小娟,白鹭,余方印,闵永安.T250钢离子渗氮后的组织和性能[J].金属热处理,2022,47(3):210-214. |
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| 作者姓名： | 周钟平 张小娟 白鹭 余方印 闵永安 |
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| 作者单位： | 1.上海航天动力技术研究所, 上海 201109; 2.上海大学 材料科学与工程学院, 上海 200444 |
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| 摘 要： | 对固溶态的T250钢进行不同渗氮时间和渗氮温度的离子渗氮试验。采用金相分析、硬度试验、XRD测定了渗氮层的深度、硬度、显微组织和物相。试验表明,T250钢渗氮后表面硬度大于900 HV0.3,基体硬度在500 HV0.3左右。渗层中的扩散层与基体边界明显。T250钢的渗氮温度与时效温度相近,可以在渗氮过程中实现材料的时效强化。
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| 关 键 词： | T250钢 离子渗氮 显微组织 显微硬度 |
| 收稿时间： | 2021-12-13 |
Microstructure and properties of T250 steel after plasma nitriding |
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| Zhou Zhongping,Zhang Xiaojuan,Bai Lu,Yu Fangyin,Min Yong'an.Microstructure and properties of T250 steel after plasma nitriding[J].Heat Treatment of Metals,2022,47(3):210-214. |
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| Authors: | Zhou Zhongping Zhang Xiaojuan Bai Lu Yu Fangyin Min Yong'an |
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| Affiliation: | 1. Shanghai Space Propulsion Technology Research Institute, Shanghai 201109, China; 2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China |
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| Abstract: | Plasma nitriding tests of different time and temperatures were carried out on the solid solution treated T250 steel. Microstructure, microhardness, phase and depth of the nitrided layer were measured by means of metallographic analysis, hardness test and XRD. The results show that after ion nitriding, the surface hardness is capable of reaching above 900 HV0.3, and the substrate hardness about 500 HV0.3. The boundary between the diffusion layer of the infiltration layer and the matrix is obvious. The nitriding temperature is similar to the aging temperature of the T250 steel, and the aging strengthening of the steel can be achieved during the nitriding process. |
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| Keywords: | T250 steel plasma nitriding microstructure microhardness |
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