The mechanism of mechanical twinning near grain boundaries in twinning-induced plasticity steel

Jin Sung Hong, Singon Kang, Jae Gil Jung, Young Kook Lee

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The mechanism of mechanical twinning in the vicinity of a grain boundary, which has been considered as a twin nucleation site, was investigated using Fe-17.5Mn-0.58C-1.5Al twinning-induced plasticity steel. When tensile strain was 0.02, multiple slips occurred near grain boundaries. The interaction between dislocations on multiple slip planes resulted in stacking faults composed of Shockley and Frank partial dislocations at the locations slightly away from grain boundaries. When the strain reached 0.05, mechanical twins formed near grain boundaries to grow toward the interior of grains. This observation result matched well with twinning mechanism proposed by Miura, Takamura, and Narita.

Original languageEnglish
Pages (from-to)62-67
Number of pages6
JournalScripta Materialia
Volume174
DOIs
Publication statusPublished - 2020 Jan 1

Bibliographical note

Funding Information:
This work was supported by the Korea Basic Science Institute under the R&D program (Project No. D39700) supervised by the Ministry of Science and ICT and a Korea Institute for Advancement of Technology grant, funded by the Korea Government (MOITE) (P0002019), as part of the Competency Development Program for Industry Specialists

Funding Information:
This work was supported by the Korea Basic Science Institute under the R&D program (Project No. D39700 ) supervised by the Ministry of Science and ICT and a Korea Institute for Advancement of Technology grant, funded by the Korea Government (MOITE) ( P0002019 ), as part of the Competency Development Program for Industry Specialists

Publisher Copyright:
© 2019 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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