The effect of heat treatment on the phase transformation texture and mechanical properties of hot-rolled high-strength automotive steels with different chemical compositions is studied. The microstructure of the steels is analyzed after water quenching from 950°C and 30-min tempering at 450°C by optical and electron microscopy. The texture due to the phase transformations is studied by electron back scatter diffraction and orientation microscopy. The phase transformation texture is related directly to the mechanical properties, which depend on the chemical composition and on the mode of heat treatment of the steel. The chemical composition plays a determining role in formation of the final orientation components.

研究了热处理对不同化学成分热轧高强汽车钢相变织构和力学性能的影响。在 950°C 水淬和 450°C 回火 30 分钟后，通过光学和电子显微镜分析钢的显微组织。通过电子背散射衍射和取向显微镜研究由于相变引起的织构。相变织构与机械性能直接相关，机械性能取决于钢的化学成分和热处理方式。化学成分在最终取向组分的形成中起决定性作用。