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

K. Datta, R Delhez, P.M. Bronsveld, J. Beyer, Hubertus J.M. Geijselaers, J. Post

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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
Original languageUndefined
Pages (from-to)3321-3326
Number of pages6
JournalActa materialia
Volume57
Issue number11
DOIs
Publication statusPublished - 2009

Keywords

  • METIS-261199
  • IR-69665

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