Single Boride Layer (Fe2B) Formation of Borided AISI M2 High-Speed Steel

Authors : Tuna AYDOĞMUŞ, Bünyamin ÇİÇEK, Polat TOPUZ, Özlem AYDIN

Pages : 1175-1186

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Publication Date : 2023-07-05

Article Type : Research Paper

Abstract :In this study, AISI M2 High-Speed Steel was borided by a pack-boriding method. Samples were borided in the atmospheric controlled furnace at 900 to 1100 C for 2 to 6h. For the boriding heat treatment, AISI 316 stainless steel crucible and a powder mixture with the trade name EKABOR 2 as the boriding agent were used. After the boriding treatment, samples were metallographically prepared. A scanning electron microscope insert ignore into journalissuearticles values(SEM); and integrated EDX insert ignore into journalissuearticles values(Energy Dispersive X-Ray Analysis); unit were used for the microstructure and chemical analysis examinations. As a result of SEM insert ignore into journalissuearticles values(BE); and EDX examinations, only a single-phase insert ignore into journalissuearticles values(Fe2B); boride layer is formed on the material surface, unlike many other types of steel. After microscopic examinations, the sample’s hardnesses were measured with the help of the Vickers indenter by 100g. As a result of the experimental studies, it was determined that AISI M2 high-speed steel can be borided, and the thickness of the boride layer increases with the increase in boriding temperature and time. In addition, it has been determined that the boride layer is approximately 5 times harder than the matrix metal.
Keywords : AISI M2, kutu borlama, Ekabor 2, borür tabakası, Fe2B fazı, sertlik