Berladir Khrystyna, Hovorun Tetiana, Botko František, Radchenko Svetlana, Oleshko Oleksandr
Department of Applied Materials Science and Technology of Constructional Materials, Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 116, Kharkivska St., 40007 Sumy, Ukraine.
Department of Automobile and Manufacturing Technologies, Faculty of Manufacturing Technologies, Technical University of Košice, Bayerova 1, 08001 Prešov, Slovakia.
Materials (Basel). 2025 May 23;18(11):2434. doi: 10.3390/ma18112434.
The study examined the influence of ion-plasma nitriding on the structure, mechanical, and tribological properties of high-speed steels AISI M2 and AISI M41. A comprehensive study was conducted on the changes in phase composition, microhardness, and wear resistance of the obtained modified layers. It was established that the optimal approach was the formation of high-nitrogen martensite without excessive nitrides, which ensured improved mechanical properties of the steels. The dependence of the nitrided layer depth and its microhardness on nitriding temperature and duration was investigated. It was found that at a temperature of 480-520 °C and a processing duration of up to 1 h, a hardened layer with a depth of 25-40 μm was formed, exhibiting increased wear resistance and microhardness of up to 10-12 GPa. The analysis of structural transformations confirmed the presence of ε and γ' phases, which contributed to increased strength and reduced friction coefficient. The obtained results can be used to improve the technological processes of heat treatment for high-speed steels used in the production of cutting tools. The proposed nitriding parameters contribute to extending the service life of steel components, which is relevant for the mechanical engineering and metallurgical industries.
该研究考察了离子等离子体渗氮对AISI M2和AISI M41高速钢的组织、力学和摩擦学性能的影响。对所得改性层的相组成、显微硬度和耐磨性的变化进行了全面研究。结果表明,最佳方法是形成不含过多氮化物的高氮马氏体,这确保了钢的力学性能得到改善。研究了渗氮层深度及其显微硬度对渗氮温度和时间的依赖性。结果发现,在480-520℃的温度和长达1小时的处理时间下,形成了深度为25-40μm的硬化层,其耐磨性和显微硬度提高至10-12GPa。结构转变分析证实了ε相和γ'相的存在,这有助于提高强度和降低摩擦系数。所得结果可用于改进切削刀具生产中使用的高速钢的热处理工艺过程。所提出的渗氮参数有助于延长钢部件的使用寿命,这对机械工程和冶金行业具有重要意义。