Tensile deformation behavior of Fe-Mn-C TWIP steel with ultrafine elongated grain structure

Taekyung Lee; Motomichi Koyama; Kaneaki Tsuzaki; You Hwan Lee; Chong Soo Lee

doi:10.1016/j.matlet.2012.02.012

Tensile deformation behavior of Fe-Mn-C TWIP steel with ultrafine elongated grain structure

Taekyung Lee, Motomichi Koyama, Kaneaki Tsuzaki, You Hwan Lee, Chong Soo Lee

IMR - Materials Design Division

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

77 Citations (Scopus)

Abstract

An Fe-17Mn-0.6C steel with ultrafine elongated grain structure was successfully produced utilizing a multi-pass caliber-rolling process at 773 K. The uniform elongation of the developed steel was not severely degraded although its strength was greatly enhanced, leading to superior tensile properties. The result contrasted with most ultrafine-grained metals, including C-free TWIP steels, reporting the critical loss of uniform elongation. The peculiar phenomenon in the present work was attributed to the high work hardening capacity of C-added TWIP steels with the submicrocrystalline structure caused by dynamic strain aging, deformation twinning, and formation of stacking faults even after strong grain refinement.

Original language	English
Pages (from-to)	169-171
Number of pages	3
Journal	Materials Letters
Volume	75
DOIs	https://doi.org/10.1016/j.matlet.2012.02.012
Publication status	Published - 2012 May 15

Keywords

Deformation twinning
Dynamic strain aging
Grain refinement
Tensile properties
TWIP steel

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10.1016/j.matlet.2012.02.012

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title = "Tensile deformation behavior of Fe-Mn-C TWIP steel with ultrafine elongated grain structure",

abstract = "An Fe-17Mn-0.6C steel with ultrafine elongated grain structure was successfully produced utilizing a multi-pass caliber-rolling process at 773 K. The uniform elongation of the developed steel was not severely degraded although its strength was greatly enhanced, leading to superior tensile properties. The result contrasted with most ultrafine-grained metals, including C-free TWIP steels, reporting the critical loss of uniform elongation. The peculiar phenomenon in the present work was attributed to the high work hardening capacity of C-added TWIP steels with the submicrocrystalline structure caused by dynamic strain aging, deformation twinning, and formation of stacking faults even after strong grain refinement.",

keywords = "Deformation twinning, Dynamic strain aging, Grain refinement, Tensile properties, TWIP steel",

author = "Taekyung Lee and Motomichi Koyama and Kaneaki Tsuzaki and Lee, {You Hwan} and Lee, {Chong Soo}",

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T1 - Tensile deformation behavior of Fe-Mn-C TWIP steel with ultrafine elongated grain structure

AU - Lee, Taekyung

AU - Koyama, Motomichi

AU - Tsuzaki, Kaneaki

AU - Lee, You Hwan

AU - Lee, Chong Soo

PY - 2012/5/15

Y1 - 2012/5/15

N2 - An Fe-17Mn-0.6C steel with ultrafine elongated grain structure was successfully produced utilizing a multi-pass caliber-rolling process at 773 K. The uniform elongation of the developed steel was not severely degraded although its strength was greatly enhanced, leading to superior tensile properties. The result contrasted with most ultrafine-grained metals, including C-free TWIP steels, reporting the critical loss of uniform elongation. The peculiar phenomenon in the present work was attributed to the high work hardening capacity of C-added TWIP steels with the submicrocrystalline structure caused by dynamic strain aging, deformation twinning, and formation of stacking faults even after strong grain refinement.

AB - An Fe-17Mn-0.6C steel with ultrafine elongated grain structure was successfully produced utilizing a multi-pass caliber-rolling process at 773 K. The uniform elongation of the developed steel was not severely degraded although its strength was greatly enhanced, leading to superior tensile properties. The result contrasted with most ultrafine-grained metals, including C-free TWIP steels, reporting the critical loss of uniform elongation. The peculiar phenomenon in the present work was attributed to the high work hardening capacity of C-added TWIP steels with the submicrocrystalline structure caused by dynamic strain aging, deformation twinning, and formation of stacking faults even after strong grain refinement.

KW - Deformation twinning

KW - Dynamic strain aging

KW - Grain refinement

KW - Tensile properties

KW - TWIP steel

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VL - 75

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JO - Materials Letters

JF - Materials Letters

ER -

Tensile deformation behavior of Fe-Mn-C TWIP steel with ultrafine elongated grain structure

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Keywords

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