Effect of Laser Hardening and Gas Nitriding on Wear Resistance of Steel P20: A Comparative Study

被引：0
|
作者：
Yan, Guanghua [1 ]
Yang, Xudong [2 ]
Gu, Jianfeng [2 ]
Li, Chuanwei [2 ]
机构：
[1] Shandong Jiao Tong Univ, Sch Construct Machinery, Jinan, Peoples R China
[2] Shanghai Jiao Tong Univ, Inst Mat Modificat & Modeling, Sch Mat Sci & Engn, Shanghai, Peoples R China
来源：
METAL SCIENCE AND HEAT TREATMENT | 2023年 / 65卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
laser surface hardening; gas nitriding; microstructure; wear resistance; steel P20 (38KhNM); SURFACE; MICROSTRUCTURE; BEHAVIOR;
D O I：
10.1007/s11041-023-00921-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of laser hardening and of gas nitriding on the microstructure and wear resistance of steel P20 (the Russian counterpart is 38KhNM) is studied. The phase composition and the microhardness of the hardened surface layers are determined and their microstructure is studied. Wear tests are performed. It is shown that both treatments raise the hardness of the steel. However, the nitrided layer has a higher resistance to plastic deformation, a higher indentation modulus, and a much higher wear resistance than the laser hardened layer. Laser hardening produces a deeper hardened layer, whereas gas nitriding provides a higher wear resistance of steel P20.
引用
收藏
页码：247 / 253
页数：7
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