Strain hardening behavior of a Fe-18Mn-0.6C-1.5Al TWIP steel

Jae Eun Jin, Young Kook Lee

Research output: Contribution to journalArticle

169 Citations (Scopus)

Abstract

The strain hardening behavior of a Fe-18Mn-0.6C-1.5Al TWIP steel was investigated through the modified Crussard-Jaoul (C-J) analysis and microstructural observations. The strain hardening rate obtained by modified C-J analysis was high up to the critical strain of 37% and then greatly decreased with further strain. The electron backscatter diffraction (EBSD) observation showed that the deformation twinning rate is greatly decreased beyond about 34% strain, indicating that the reduced strain hardening rate at the large strain region is attributed to the deceleration of deformation twinning rate. The volume fraction of twinned region was increased with tensile strain due to the increase in the number of deformation twins not to the lateral growth of each deformation twin.

Original languageEnglish
Pages (from-to)157-161
Number of pages5
JournalMaterials Science and Engineering A
Volume527
Issue number1-2
DOIs
Publication statusPublished - 2009 Dec 15

Fingerprint

strain hardening
Steel
Strain hardening
steels
Twinning
twinning
Tensile strain
Deceleration
deceleration
Electron diffraction
Volume fraction
diffraction
electrons

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "The strain hardening behavior of a Fe-18Mn-0.6C-1.5Al TWIP steel was investigated through the modified Crussard-Jaoul (C-J) analysis and microstructural observations. The strain hardening rate obtained by modified C-J analysis was high up to the critical strain of 37{\%} and then greatly decreased with further strain. The electron backscatter diffraction (EBSD) observation showed that the deformation twinning rate is greatly decreased beyond about 34{\%} strain, indicating that the reduced strain hardening rate at the large strain region is attributed to the deceleration of deformation twinning rate. The volume fraction of twinned region was increased with tensile strain due to the increase in the number of deformation twins not to the lateral growth of each deformation twin.",
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Strain hardening behavior of a Fe-18Mn-0.6C-1.5Al TWIP steel. / Jin, Jae Eun; Lee, Young Kook.

In: Materials Science and Engineering A, Vol. 527, No. 1-2, 15.12.2009, p. 157-161.

Research output: Contribution to journalArticle

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