Abstract
The deformation behaviour of an AISI 316 stainless steel under uniaxial tension was examined at 25, − 70 and − 196° C. The flow curves exhibited peculiar shapes and the work hardening rates were found to increase with strain beyond certain values of plastic strain. X-ray diffraction analyses showed that the transformation toα-martensite commenced at these values of plastic strain and thereafter the volume fraction ofα increased steadily with strain. On the other hand, the amount of the∈-martensite was found to increase with plastic strain initially, reach a maximum and then decrease gradually. The contribution of theα-phase to the flow stress of the alloy was found to be directly proportional to the volume fraction ofα. It is shown that the analysis of the flow curves provides a simple method of detecting the onset of the strain-induced martensitic transformation as well as estimating the amount of this martensite during further deformation.
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Seetharaman, V., Krishnan, R. Influence of the martensitic transformation on the deformation behaviour of an AISI 316 stainless steel at low temperatures. J Mater Sci 16, 523–530 (1981). https://doi.org/10.1007/BF00738646
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DOI: https://doi.org/10.1007/BF00738646