The addition of high-content alloying elements and the unbefitting process make carbide-free bainite steel difficult in industrial production. Thus, we adopted a dynamic continuous cooling for developing high-strength cold-rolled low-alloy bainitic steels this study. influence rates on microstructure mechanical properties was investigated by dilatometry, scanning electron microscopy (SEM), X-ra...

Stress–strain behavior of a low carbon alloy multiphase steel with ferrite, tempered bainite, and retained austenite was studied at different cryogenic temperatures. Results indicated that both strength ductility were enhanced decreasing tensile testing temperature. The enhancement attributed to the decreased mechanical stability temperature, resulting in sufficient transformation induced plast...

The elevated temperature tensile behavior of a Nb-Mo microalloyed medium steel was investigated over the ?50 to 150 °C range. ultimate strength significantly reduced with increasing deformation temperature, but both YS (yield strength) and EI (total elongation) values changed slightly. best product UTS (ultimate (~59.5 GPa·%) can be achieved at 50 °C, implying an excellent combination ductility...

The crystallographic orientation dependence of the transformation induced plasticity (TRIP) in high carbon bainitic steel was studied. 0.6% C-2.0% Si-1% Cr steels were austenitized at two conditions to obtain different size prior-austenite grains. Subsequently, they austempered evolve structure composed mainly ferrite and retained austenite. characteristic this sample is that it has much larger...

Low carbon low alloyed high strength steel with the chemical composition suitably designed to support stabilization of retained austenite was used in this work. The processed by conventional annealing for a reference and several different heat thermo-mechanical treatments were further proposed test typical TRIP (transformation induced plasticity), DP (dual phase) QP (quenching partitioning) pro...