4.7 Article

Martensite -> austenite phase transformation kinetics in an ultrafine-grained metastable austenitic stainless steel

期刊

ACTA MATERIALIA
卷 59, 期 2, 页码 738-748

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2010.10.012

关键词

Austenite; Martensite; Stainless steel; Phase transformation kinetics

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A generalized phase transformation kinetics model is used to understand the martensite to austenite transformation in a cold-rolled and annealed metastable AISI 301LN ultrafine-grained austenitic stainless steel. The model shows that the presence of interstitial nitrogen and heavy cold-rolling is important to promote fast transformation kinetics, through rapid nitrogen-diffusion and austenite nucleation at austenite/martensite phase boundaries. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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