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

Jae Eun Jin; Young Kook Lee

doi:10.1016/j.msea.2009.08.028

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

Jae Eun Jin, Young Kook Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

189 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 language	English
Pages (from-to)	157-161
Number of pages	5
Journal	Materials Science and Engineering A
Volume	527
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2009.08.028
Publication status	Published - 2009 Dec 15

All Science Journal Classification (ASJC) codes

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

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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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N2 - 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.

AB - 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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