A low-temperature study to examine the role of epsilon-martensite during strain-induced transformations in metastable austenitic stainless steels

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Datta, K. and Delhez, R. and Bronsveld, P.M. and Beyer, J. and Geijselaers, H.J.M. and Post, J. (2009) A low-temperature study to examine the role of epsilon-martensite during strain-induced transformations in metastable austenitic stainless steels. Acta Materialia, 57 . 3321 - 3326. ISSN 1359-6454

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Abstract:A low-temperature study of the mechanical behaviour of a metastable semi-austenitic stainless steel was carried out. This class of stainless steels is found to show a characteristic hump followed by softening in their stress–strain curves, especially at low temperatures, much like dynamically recrystallizing steels. Experiments are carried out at sub-zero temperatures to examine this phenomenon. Samples are subjected to various metallographic, X-ray and transmission electron microscopy techniques to identify the evolution of the different phases. The presence of an intermediate phase e-martensite is detected which might cause a softening in the stress–strain behaviour, comparable with the formation in other low stacking fault energy stainless steels.

Keywords: Martensitic transformation; Magnetic materials
Item Type:Article
Copyright:© 2009 Elsevier
Faculty:
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/69665
Official URL:http://dx.doi.org/10.1016/j.actamat.2009.03.039
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Metis ID: 261199