Characteristics of the Static Recrystallization Kinetics of an Intercritically Deformed C-Mn Steel

Abstract:

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The austenite recrystallization kinetics in the intercritical region of a C-Mn steel is investigated by means of stress relaxation tests. It is found that the Avrami exponent, n, decreases significantly with decreasing temperature, i.e. with increasing ferrite fraction. This behaviour deviates from that of austenite recrystallization in the purely austenitic state, in which case the Avrami exponent is constant and independent of temperature and deformation. To interpret this, the influence of spatial variation of the plastic strain in the intercritical austenite grains on recrystallization kinetics is modelled quantitatively. The modelling results seem to indicate that the strain heterogeneity is responsible for the decreasing Avrami exponent with decreasing intercritical temperature.

Info:

Periodical:

Materials Science Forum (Volumes 467-470)

Edited by:

B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot

Pages:

293-298

DOI:

10.4028/www.scientific.net/MSF.467-470.293

Citation:

H. Luo et al., "Characteristics of the Static Recrystallization Kinetics of an Intercritically Deformed C-Mn Steel ", Materials Science Forum, Vols. 467-470, pp. 293-298, 2004

Online since:

October 2004

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$35.00

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