Room-temperature mechanical properties of dual-phase steels deformed at high temperatures

摘要

Dual-phase steels with different morphology and volume fraction of martensite were deformed between 2 percent and 8 percent at a high-temperature range of 150-450 deg C. Room-temperature tensile properties showed that both yield and tensile stresses depend on the amount of pre-strain, deformation temperature, volume fraction and morphology of martensite. Results show that both YS and UTS increase with increasing the amount of pre-strain at a given temperature.