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Effects of the Tempering and High-Pressure Torsion Temperatures on Microstructure of Ferritic/Martensitic Steel Grade 91

机译:回火和高压扭转温度对91级铁素体/马氏体钢组织的影响

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摘要

Grade 91 (9Cr-1Mo) steel was subjected to various heat treatments and then to high-pressure torsion (HPT) at different temperatures. Its microstructure was studied using transmission electron microscopy (TEM) and X-ray diffraction (XRD). Effects of the tempering temperature and the HPT temperature on the microstructural features and microhardness in the ultrafine-grained (UFG) Grade 91 steel were researched. The study of the UFG structure formation takes into account two different microstructures observed: before HPT in both samples containing martensite and in fully ferritic samples.
机译:对91级(9Cr-1Mo)钢进行了各种热处理,然后在不同的温度下进行了高压扭转(HPT)。使用透射电子显微镜(TEM)和X射线衍射(XRD)研究了其微观结构。研究了回火温度和HPT温度对91级超细晶粒UFF钢组织和显微硬度的影响。 UFG结构形成的研究考虑了观察到的两种不同的微观结构:在HPT之前,在含有马氏体的样品和完全铁素体样品中。

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