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.
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ACKNOWLEDGMENTS
The study was supported by the Special Coordination Funds of the Ministry of Education, Culture, Sports, Science, and Technology of the Japanese Government. The authors are grateful to Ms. J. Hono, National Institute for Materials Science, for improving the language of the article. One of the authors (A. Belyakov) would like to express his thanks to the National Institute for Materials Science for providing a scientific fellowship.
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Belyakov, A., Tsuzaki, K., Kimura, Y. et al. Annealing behavior of a ferritic stainless steel subjected to large-strain cold working. Journal of Materials Research 22, 3042–3051 (2007). https://doi.org/10.1557/JMR.2007.0398
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DOI: https://doi.org/10.1557/JMR.2007.0398