Abnormal growth of columnar grains and formation of Σ3 grain boundaries in non-oriented electrical steels
作者: Li XieMingtao HeJiangtao WangJian WangYalin LuWenting XuChunfa Yao
作者单位: 1School of Materials Engineering, Jiangsu University of Technology, Changzhou, Jiangsu 213001, China
2Central Iron and Steel Research Institute, Beijing 100081, China
刊名: Materials Letters, 2020, Vol.269
来源数据库: Elsevier Journal
DOI: 10.1016/j.matlet.2020.127671
关键词: Non-oriented electrical steelsAbnormal grain growthΣ3 grain boundariesMicrostructureTexture
英文摘要: Abstract(#br)The remarkably abnormal growth behavior of columnar grains and the formation of Σ3 grain boundaries (GBs) were studied via plastic deformation and annealing based on an electron backscattering diffraction (EBSD) investigation. Driven by the stored energy and GB mobility, coarse austenite columnar grains were formed by the abnormal growth of fine equiaxed grains with higher grain orientation spread (GOS) values in the reducing atmosphere of hydrogen. Moreover, extraordinarily coarse columnar grains with high GOS values and non-{1 1 1} texture were formed by microstructure inheritance during γ → α transformation. In addition, slender ferritic columnar or island grains with Σ3 GBs and low GOS values were generally obtained, and the formation mechanism was strictly associated...
全文获取路径: Elsevier  (合作)
影响因子:2.224 (2012)

  • grain 颗粒
  • oriented 定向的
  • steels 钢材
  • growth 生长
  • electrical 电的
  • columnar 柱状的
  • formation 建造