Tempering Kinetics of S45C Martensitic Steel

Abstract:

The strain change during the tempering of S45C martensitic steel was examined at different heating rates using a dilatometer. Tempering stages 1 and 3 corresponding to the precipitations of transition carbide and cementite were observed. Tempering kinetics at each stage was investigated from the relation between the measured strain and atomic volume change during tempering. From the tempering kinetic data, continuous heating tempering diagram was constructed and the tempering kinetic model was proposed as Zener-Hillert type differential equation.

• Periodical: Solid State Phenomena (Volume 118)
• Pages: 375-380
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.118.375
• Online since: December 2006
• Authors: Min Su Jung, Seok Jae Lee, Young-Kook Lee
• Keywords: Carbide, Computer Modeling, Dilatometry, Martensite, S45C Steel, Segregation, Tempering

References

[1] A.K. Jena and M.C. Chaturvedi: Phase Transformations in Materials, Prentice Hall (1992), p.453.

[2] G.R. Speich and W.C. Leslie: Metall. Trans. Vol. 3 (1972), p.1043.

[3] L. Cheng, C.M. Brakman, B.M. Korevaar and E.J. Mittemeijer: Metall. Trans. A Vol. 19A (1988), p.2415.

[4] G.R. Speich: Trans. TMS-AIME Vol. 245 (1969), p.2553.

[5] C. Zener: Trans. AIME Vol. 167 (1946), p.550.

[6] M. Hillert: Jernkont. Ann. Vol. 141 (1957), p.758.

[7] K.W. Andrews: JISI Vol. 203 (1965), p.721.

[8] M. van Rooyen and E.J. Mittemeijer: Scripta Metall. Vol. 19A (1988), p.2415.

[9] W.K. Choo and R. Kaplow: Acta Metall. Vol. 21 (1973), p.725.

[10] S. Nagakura, Y. Hirotsu, M. Kusunoki, T. Suzuki and Y. Nakamura: Met. Trans. Vol. 14A (1983), p.1025.