张驰

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:男

毕业院校:东北大学

学位:博士

所在单位:材料科学与工程学院

学科:材料学. 材料加工工程

电子邮箱:Zhangchi@dlut.edu.cn

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EBSD study of microstructure evolution of ferritic stainless steel during cold rolling and annealing

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论文类型:会议论文

发表时间:2018-01-01

收录刊物:CPCI-S

卷号:190

关键字:stainless steel; rolling; texture

摘要:The microstructure and texture of ferritic stainless steels (FSSs), formed during cold rolling and annealing processes, determine the mechanical properties of final sheet, especially the deep drawing formability. In this work, aNb, Ti stabilized17%Cr FSS was cold rolled with the reductions of 20%similar to 70% and annealed for periods at 700 degrees C. EBSD technique was used to characterize the microstructure evolution and inhomogeneous deformation strain distribution of the sheet during cold rolling. Partially annealed sheets were also analyzed to observe the nucleation and growth of recrystallized grains. Special attentions were paid on the crystal orientation of the deformed grains and recrystallzed grains. The results infer that in-grain shear band was formed in the cold rolled sample with the reduction higher than 30%, associated with the formation of high deformation strains. And the recrystallized grains prefer to form at some unique grain boundaries and in-grain shear bands. The orientations of recrystallized grains relates to the deformed grains.