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Annealing behavior of a ferritic stainless steel subjected to large-strain cold working

Published online by Cambridge University Press:  31 January 2011

A. Belyakov ,
K. Tsuzaki ,
Y. Kimura  and
Y. Mishima
A. Belyakov*
Affiliation:
Structural Metals Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
K. Tsuzaki
Affiliation:
Structural Metals Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
Y. Kimura
Affiliation:
Department of Materials Science and Engineering, Tokyo Institute of Technology, 4295 Nagatsuta, Yokohama 226-8502, Japan
Y. Mishima
Affiliation:
Department of Materials Science and Engineering, Tokyo Institute of Technology, 4295 Nagatsuta, Yokohama 226-8502, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Mechanisms of microstructure evolution during annealing after cold working were studied in an Fe-15%Cr ferritic stainless steel, which was processed by bar rolling/swaging to various total strains ranging from 1.0 to 7.3 at ambient temperature. Two types of recrystallization behavior were observed depending on the cold strain. An ordinary primary (discontinuous) recrystallization developed in the samples processed to conventional strains of 1.0–2.0. On the other hand, rapid recovery at early annealing resulted in ultrafine-grained microstructures in the larger strained samples that continuously coarsened on further annealing. Such annealing behavior was considered as continuous recrystallization.

Keywords

AnnealingCold workingMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 11 , November 2007 , pp. 3042 - 3051
Copyright
Copyright © Materials Research Society 2007

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References

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