Abstract
The elastic-plastic constitutive equation with the stress-dependent effect on phase transformation is proposed, but there are few experimental examples to verify the accuracy of the equation. Therefore,the transformation induced plasticity (TRIP) strain during pealrite reaction of S45C was measured when the hollow specimen was subjected to tension-compression-torsion uniaxial stress. TRIP strain was identified from experimental results, which are reproducible results about torsional strain. In the case of axial strain, some results had variability under same stress condition. Then we found that the constitutive equation disagree with TRIP strain under tension-compression-torsion uniaxial stress.
