Experimental Investigation of Transformation Plastic Behavior under Tensile-Compressive-Torsional Stress in Steel
A tensile/compressive-torsional biaxial testing system was employed and tensile/ compressive-torsional tests were performed for the hollow specimen, which was loaded and the austenized specimen was cooled so that pealrite transformation accompanied by transformation plasticity occurred and axial and torsional strain were measured. Furthermore, the elastic-plastic constitutive equation due to phase transformation based on the hydrostatic pressure dependent model was proposed, and the validity of this equation was discussed experimentally. The test results showed the transformation plasticity coefficient due to pearlitic transformation of S45C depends on the loading direction, and these behaviour can be appropriately expressed by the hydrostatic pressure dependent model than the isotropic model.
Yeong-Maw Hwang and Cho-Pei Jiang
N. Hikida et al., "Experimental Investigation of Transformation Plastic Behavior under Tensile-Compressive-Torsional Stress in Steel", Key Engineering Materials, Vol. 626, pp. 426-431, 2015