Diffusion Induced Changes in Eutectic Carbides in Wrought M2 High-Speed Steel at Austenitising

Abstract:

The influence of heat treatments on the microstructure of AISI M2 type high-speed steel obtained using conventional metallurgy has been studied. The primary focus was on the effects of austenitisation temperatures on the behaviour of the initial eutectic carbides during austenitisation. In order to investigate kinetics of both the microstructure and phase transformations in eutectic carbides upon heat treatments with respect to diffusion processes, different techniques of electron scanning microscopy and energy dispersive X-ray spectrometry have been used. The effect of the austenitisation temperature on the primary austenite grain size, martensite microstructure and volume fraction, size distribution, and morphology of the primary carbides of eutectic origin as well as their behaviour during heat treatment in the wrought M2 high-speed steel was thoroughly investigated.

• Periodical: Defect and Diffusion Forum (Volume 365)
• Pages: 5-10
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.365.5
• Online since: July 2015
• Authors: Alexander S. Chaus, Matej Beznák, Miroslav Sahul
• Keywords: Carbides, Diffusion, Heat Treatment, High-Speed Steel, Microstructure

References

[1] M. Boccalini and H. Goldenstein: Int. Mater. Rev. Vol. 46 (2001), p.92.

[2] G. Hoyle, High Speed Steels, (Butterworth, Cambridge, UK, 1988).

[3] L. S. Kremnev: Met. Sci. Heat Treat. Vol. 33 (1991), p.428.

[4] H. J. Goldschmidt: Interstitial Alloys, (Butterworths, London, 1967).

[5] H. Fu and J. Xing: Mater. Wissensch. Werkstofftech. Vol. 35 (2004), p.578.

[6] H. Fredriksson and S. Brising: Scand. J. Metall. Vol. 5 (1976), p.268.

[7] R. H. Barcalow, R.W. Kraft, J. I. Goldstein: Metall. Trans. A Vol. 3 (1972), p.919.

[8] X. Zhou, F. Fang, G. Li, J. Jiang: ISIJ Int. Vol. 50 (2010), p.1151.

[9] T.K. Ha, E.I. Yang, J.Y. Jung, S.W. Park: Korean J. Met. Mater. Vol. 48 (2010), p.589.

[10] E. -S. Lee, W. -J. Park, J.Y. Jung, S. Ahn: Metall. Mater. Trans. A Vol. 29 (1998), p.1395.

[11] H. Fredriksson, M. Hillert, M. Nica: Scand. J. Metall. Vol. 8 (1976), p.115.

[12] Zhang, X.D., Liu, W., Sun, D.L., Li, Y.G., Metall. Mater. Trans. A Vol. 38A (2007), p.499.

[13] A. S. Chaus and Porubsky: Met. Sci. Heat Treat. Vol. 55 (2014), p.583.

[14] A. S. Chaus: Mater. Sci. Techn. Vol. 30 (2014), p.1105.