Funct. Mater. 2021; 28 1: 76-83.
Establishment of structure and operational properties of borated layers on 40X steel obtained from paste by induction heating
1National Technical University Kharkiv Polytechnic Institute, 2 Kirpicheva Str., 61002 Kharkiv, Ukraine 2Kharkiv National University of Civil Engineering and Architecture, 40 Sumskaya Str., 61002 Kharkiv, Ukraine
Structural studies of borated layers on 40X steel obtained from pastes using high-speed heating (~ 500-1000°C/s) by high-frequency currents are presented. The structural features of the layer formed under conditions of high-speed heating are revealed. Some morphological differences between the layers obtained with high-speed heating were revealed. Fe2B borides obtained by heating to 1300°C at a rate of 500°C/s have a rounded shape and are included in the matrix structure of the eutectic. Fe2B borides obtained by heating to 1150°C at a rate of 950°C/s, have a regular shape with straight edges. In both cases, the matrix structure of the borated layer has a cellular morphology, which indicates the mechanism of intergranular diffusion. The elemental composition of the diffusion layer has been established. According to the results of testing the samples by erosion-abrasive wear, the most resistant of the considered borated layers is the layer obtained by high-speed heating at 1150°C with the highest ductility resource.
1. H.O.Postelnyk, O.V.Sobol, L.Kucerova, Osman Dur, Functional Materials, 27, 303 (2020). | ||||
2. M.Kulka, Current Trends in Boriding. Techniques, Poznan (2019). https://doi.org/10.1007/978-3-030-06782-3 |
||||
3. H.Masumoto, A.Asada, H.Hasuyama et al., Welding Intern., 11, 110 (1997). https://doi.org/10.1080/09507119709447324 |
||||
4. V.Andryushechkin, A.Bashnin, Materialovedenie i Termicheskaya Obrabotka Metallov, 4, 23 (1981). | ||||
5. M.Pogribny'j, S.Knyazyev, Metaloznavstvo ta Obrobka Metaliv, 1, 33 (2011) [in Ukraine]. | ||||
6. A.Matuschka, Boronizing, Hanser, Munchen (1980). | ||||
7. V.Ivanayskiy, A.Ishkov, N.Krivochurov et al., Polzunovskiy Vestnik, 3, 201 (2010). | ||||
8. D.Mikolajczak, M.Kulka, N.Makuch, P.Dziarski, Arch. Mech. Tech. Mater., 36, 35 (2016). https://doi.org/10.1515/amtm-2016-0007 |
||||
9. T.Kusuhara, J.Morimoto, N.Abe, M.Tsukamoto. J. High Temp. Soc., 36, 295 (2010). https://doi.org/10.7791/jhts.36.295 |
||||
10. S.Yunus, S.Alias, F.Wong et al., ARPN J. Eng. Appl. Sci., 10, 7821 (2015). | ||||
11. V.Labunets, L.Voroshnin, Iznosostoykie Boridnyie Pokryitiya, Tehnika, Kiev (1989). | ||||
12. R.Joseph, Surface Hardening of Steels: Understanding the Basics. ASM International, Technology & Engineering (2002). | ||||
13. I.Mihaylov, A.Baturin, A.Mihaylov, Rentgenovskie Metodyi Analiza Sostava Materialov: Pidruchnik NTU HPI Kharkov (2015). | ||||