Effect of Initial Grain Size on the Dynamic Recrystallization Behaviours of Austenite


Article Preview

The effect of initial grain size on the recrystallization behaviour of a type 304 austenitic stainless steel was investigated using hot torsion. Refinement of the initial grain size to 8 μm had a considerable effect on the flow curve shapes, peak and critical strains and also on DRX kinetics, compared with an initial grain size of 35 μm. Microstructural investigations using EBSD suggest a transition from conventional (discontinuous) to continuous dynamic recrystallization with decreasing initial grain size. Also, there was a moderate effect of initial grain size on the DRX grain size.



Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




A. Dehghan-Manshadi and P. D. Hodgson, "Effect of Initial Grain Size on the Dynamic Recrystallization Behaviours of Austenite", Materials Science Forum, Vols. 561-565, pp. 33-36, 2007

Online since:

October 2007




[1] Dehghan-Manshadi A., Beladi H., Barnett M.R., Hodgson P.D., Mater. Forum, Vol. 467- 470 (2004) P. 1163.

DOI: https://doi.org/10.4028/www.scientific.net/msf.467-470.1163

[2] Ryan N.D., McQueen H.J., Canadian Metall. Quart., Vol. 29 (1990) P. 147.

[3] Sakai T., Jonas J.J., Acta Metall., Vol. 32 (1984) P. 189.

[4] Weiss H., Skinner D.H., Everett J.R., J. Phys. E, Vol. 6 (1973) P. 709.

[5] Miura H., Sakai T., Hamji H., Jonas J.J., Scripta Mater., Vol. 50 (2004) P. 65.

[6] Jazaeri H., Humphreys . FJ., Mater. Sci. Forum, Vol. 396-402 (2002) P. 551.

[7] Suh D.W., Cho J.Y., Nagai K., Metall. Mater. Trans. A, Vol. 35 (2004) P. 3399.

[8] Belyakov A., Miura H., Sakai T., Scripta Mater., Vol. 43 (2000) P. 21.

[9] Salvatori I., Inoue T., Nagai K., ISIJ International, Vol. 42 (2002) P. 744.

[10] Belyakov A., Tsuzaki K., Miura H., Sakai T., Acta Mater., Vol. 51 (2003) P. 847.

[8] .