An ultra high strength steel,22SiMn2 TiB,was used for the study of the effects of quenching,tempering and partitioning process on the evolution of microstructure.Optical microscope(OM),scanning electron microscope(SEM)and X-ray diffraction(XRD)were utilized for studying evolutions of microstructures after different treatments.The results show that there is not obvious change on the microstructure of the as-quenched lath martensite when tempering temperature or partitioning temperature is below 320℃ whether ...
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