The effect of grain size on the mechanical response of a metastable austenitic stainless steel
1 Department of Materials Engineering, The University of British Columbia, Vancouver, V6T 1Z4, Canada
2 Département DuMAS de I2M École Nationale Supérieure d'Arts et Métiers, Esplanade des Arts et Métiers, 33405 Talence Cedex, France
3 APERAM, Centre de Recherche, BP. 15, 62330 Isbergues, France
The combination of high environmental resistance and excellent strength, elongation and energy absorption make austenitic stainless steels potentially attractive for transportation applications. In the case of metastable grades that undergo a strain induced martensitic transformation it is possible to significantly change the mechanical properties simply by changing the austenite grain size. Predicting such behaviour using physically based models is, however, extremely challenging. Here, some recent work on the coupling between grain size and mechanical response will be presented for a metastable AISI 301 LN stainless steel. Successes and continuing challenges will be highlighted.
© Owned by the authors, published by EDP Sciences, 2013
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