抄録
Three-point bending system has been developed to analyze the transformation plasticity (TP) behavior and obtain transformation plasticity coefficient. Two kinds of materials SCM440 steel and S45C steel have been studied. The specimens heated to austenite temperature and hold temperature constant for several minutes, then naturally cooled to room temperature, during cooling the bending stress applied to the specimen. The maximum transformation plasticity deflections due to bending stresses have been obtained experimentally and then transformation plasticity coefficient determined. By improving the loading system of test machine and changing one of simple support to fixed support the scattering of deflection decreased.
