Kinetics of Recrystallization and Grain Growth of Cold Rolled TWIP Steel

Abstract:

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Hot rolled, laboratory-cast, TWIP steel samples (5.4 mm thick) of 22% Mn - 0.6% C (in mass-%) were cold rolled to different reductions (from 40 % to 70 %) and subsequently isothermally annealed for various times at temperatures ranging from 450º C to 1100º C. The evolution of recrystallization and grain growth was followed by control of the softening kinetics complemented by metallographic, OIM and microtexture observations. A map of the recovery, recrystallization and grain growth in the temperature-time space was obtained. In all instances, the grain size at the end of recrystallization was very fine, D ≤ 2 µm and larger grain sizes were the result of grain growth. A range of grain sizes 2 µm ≤ D ≤ 50 µm was covered by the grain growth experiments. A phenomenological grain growth equation that is useful for the annealing control of this steel was derived from the measurements.

Info:

Periodical:

Advanced Materials Research (Volumes 89-91)

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

153-158

DOI:

10.4028/www.scientific.net/AMR.89-91.153

Citation:

F. de las Cuevas et al., "Kinetics of Recrystallization and Grain Growth of Cold Rolled TWIP Steel", Advanced Materials Research, Vols. 89-91, pp. 153-158, 2010

Online since:

January 2010

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Price:

$35.00

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