Influence of the martensitic transformation on the deformation behaviour of an AISI 316 stainless steel at low temperatures |
| |
Authors: | V Seetharaman R Krishnan |
| |
Affiliation: | (1) Reactor Research Centre, 603102 Kalpakkam, India;(2) Bhabha Atomic Research Centre, 400085 Bombay, India |
| |
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 to -martensite commenced at these values of plastic strain and thereafter the volume fraction of 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 the -phase to the flow stress of the alloy was found to be directly proportional to the volume fraction of . 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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|