Specifics of surface phase formation during carburisation of ferrous alloys

Authors: Terezanova K.V., Cherenkova S.A.
Published in issue: #2(7)/2017
DOI: 10.18698/2541-8009-2017-2-62
Category: Metallurgy and Science of Materials | Chapter: Metal Science, Thermal Processing of Metals and Alloys
Keywords: surface hardening, carburisation, diffusion saturation of surfaces, X-ray diffractometry method, ferrous alloys, phase structure of surface layers, sample hardening, X-ray phase analysis, surface property improvement
Published: 30.03.2017

We used X-ray diffractometry to conduct a phase analysis of surface layers formed in a range of ferrous alloys after surface hardening. We studied ingot iron samples after subjecting them to vacuum carburisation for two, four and six hours. This treatment made it possible to alter the phase composition of surface layers, which, in turn, affected performance characteristics of the samples, such as wear resistance, hardness, etc. We conducted a qualitative phase analysis and determined a rational treatment duration.

References

[1] Gur’yev M.A., Okolovich G.A. steel part cavityless casting in process of cavityless casting. Polzunovskiy almanakh, 2010, no. 1, pp. 102-106 (in Russ.).

[2] Krukovich M.G. Formation mechanism of diffusion layers. Novye materialy i tekhnologii v mashinostroenii, 2012, no. 15, pp. 69-76 (in Russ.).

[3] Arzamasov B.V., Makarov V.I., Mukhin G.G., Ryzhov N.V., Silaev V.I. Materialovedenie [Material engineering]. Moscow, Bauman MSTU Publ., 2008. 648 p. (in Russ.).

[4] Zinchenko V.M. Cementation. Tekhnologiya metallov, 2007, no. 1, pp. 46-48 (in Russ.).

[5] Isaenkova M.G., Perlovich V.I., Skrytnyy V.I., Sokolov N.A., Yal’tsev V.N. Rentgenovskaya difraktometriya [X-ray diffractometry]. Moscow, MEPhI Publ., 2007. 60 p. (in Russ.).

[6] Barabash M.A., Kolmykov D.V., Goncharov A.N., Kolmykov V.I. Increasing of the endurance of retread parts by cementation when repairing of machines. Uprochnyayushchie tekhnologii i pokrytiya [Strengthening Technologies and Coatings], 2009, no. 5, pp. 44-47 (in Russ.).

[7] Evdokimov V.D., Klimenko L.P., Evdokimova A.N. Tekhnologiya uprochneniya mashinostroitel’nykh materialov [Strengthening technology for engineering materials]. Odessa, Nikolaev, Petro Mohyla NGGU Publ., 2005. 352 p. (in Russ.).

[8] Lakhtin Yu.M. Materialovedenie. [Material engineering]. Moscow, Metallurgiya Publ., 1990. 528 p. (in Russ.).

[9] Solntsev Yu.P. Materialovedenie i termicheskaya obrabotka [Material engineering and heat treating]. Moscow, Metallurgiya Publ., 1988. 512 p.