The present work focusses on the onset of the critical stress for the DT
of austenite to ferrite during double hit deformation complemented with
microstructural analysis to verify the observations. The following are
conclusions from the present research.
- The flow stress increases with the decrease in the temperature and
increase in the strain rate for both temperatures and strain rates.
- The critical stress associated with the onset of DT during the first
deformation is higher than the critical stresses measured during the
second hit deformation.
- The critical stress increases with temperature and strain rates for
both first and double hit deformations.
The authors acknowledge with gratitude funding received from the Natural
Sciences and Engineering Research Council of Canada (NSERC), New
Brunswick Innovation Foundation (NBIF) and Harrison McCain Foundation.
Authors have no conflict of interest relevant to this article