Development of crystal orientation control method for high permeability of motor iron core

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K17947
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Production engineering/Processing studies
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Terano Motoki 東京工業大学, 工学院, 助教 (90708554)
• Research Collaborator: YOSHINO Masahiko 東京工業大学, 工学院・機械系, 教授 (40201032)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 塑性加工 / バニシング加工 / 静的再結晶

Outline of Final Research Achievements

In this study, roller burnishing is employed to introduce the shear strain into the surface of the pure iron sheet. And effects of burnishing and annealing on static recrystallization in the finished surface layer are investigated utilizing Electron Back Scattering Diffraction (EBSD) analysis technique. The generation of shear deformation was confirmed by Kernel Average Misorientation (KAM) values at the surface layer. By conducting a series of the annealing and EBSD analyses, the static recrystallization process is observed. Since enough strain energy is accumulated by the burnishing in a specimen with large shear deformation zone, the static recrystallization occurs on the burnished surface preferentially after the annealing.

Free Research Field

塑性加工