| 渗氮温度对42CrMo钢零件表面后氧化渗层的影响 |
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| 引用本文： | 孟璇,岳佳宏,孔令飞,杨阳,贾鹏.渗氮温度对42CrMo钢零件表面后氧化渗层的影响[J].金属热处理,2021,46(2):182-184. |
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| 作者姓名： | 孟璇 岳佳宏 孔令飞 杨阳 贾鹏 |
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| 作者单位： | 山西航天清华装备有限责任公司, 山西 长治 046012 |
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| 摘 要： | 采用硬度测试、显微组织观察、脆性等级和疏松等级评价等方法研究了渗氮温度对42CrMo钢零件渗氮后氧化渗层性能的影响。结果表明:在渗氮后氧化处理过程中,渗层的表面硬度随着渗氮温度的升高出现先增后降的趋势;渗层深度和疏松等级随渗氮温度的升高而增加,但脆性等级变化不大。当渗氮温度为560 ℃时,42CrMo钢零件可获得表面硬度≥600 HV、渗层(白亮层)深度≥15 μm、1级脆性等级、2级疏松等级的优秀渗层。
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| 关 键 词： | 42CrMo钢 渗氮后氧化 表面硬度 渗层深度 脆性等级 疏松等级 |
| 收稿时间： | 2020-07-19 |
Effect of nitriding temperature on post-oxidating infiltrated layer of 42 CrMo steel part surface |
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| Meng Xuan,Yue Jiahong,Kong Lingfei,Yang Yang,Jia Peng.Effect of nitriding temperature on post-oxidating infiltrated layer of 42 CrMo steel part surface[J].Heat Treatment of Metals,2021,46(2):182-184. |
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| Authors: | Meng Xuan Yue Jiahong Kong Lingfei Yang Yang Jia Peng |
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| Affiliation: | Shanxi Aerospace Qinghua Equipment Co., Ltd., Changzhi Shanxi 046012, China |
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| Abstract: | Effect of nitriding temperature on properties of the infiltrated layer of 42 CrMo steel parts treated by the process of nitriding with post-oxidating was studied by means of hardness test,microstructure observation,and evaluation of brittleness grade and porosity grade.The results show that the thickness and porosity grade of the infiltrated layer increase with the increase of nitriding temperature,but the brittleness grade changes little.The surface hardness of the infiltrated layer increases first and then decreases with the increase of nitriding temperature.When the nitriding temperature is 560℃,the 42 CrMo steel parts can obtain infiltrated layer with excellent properties,of which the surface hardness and the thickness of infiltrated layer is≥600 HV and≥15μm respectively,the brittleness and the porosity of infiltrated layer is grade 1 and grade 2,respectively. |
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| Keywords: | 42CrMo steel nitriding with post-oxidating surface hardness infiltrated layer thickness brittleness grade porosity grade |
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