Enhancement of hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steel by partial recrystallization technique

Tak Min Park; Min Tae Kim; Kyeong Ho Baik; Motomichi Koyama; Jeongho Han

doi:10.1016/j.matchar.2019.03.014

Enhancement of hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steel by partial recrystallization technique

Tak Min Park, Min Tae Kim, Kyeong Ho Baik, Motomichi Koyama, Jeongho Han

IMR - Materials Design Division

Chungnam National University

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

7 Citations (Scopus)

Abstract

We suggest that the partial recrystallization is a novel pathway to increase the hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steels. The Fe-18Mn-0.6C (wt%) cold-rolled steel was annealed for from 3 min to 30 min at 650 °C. When the annealing time was shorter than 5 min, the specimen was partially recrystallized, while when the annealing time exceeded 10 min, the matrix was almost fully recrystallized. The partially recrystallized specimens exhibited the improved hydrogen embrittlement resistance because the inherited dislocation and mechanical twins in unrecrytallized grains acted as a trap site for diffusible hydrogen.

Original language	English
Pages (from-to)	221-226
Number of pages	6
Journal	Materials Characterization
Volume	151
DOIs	https://doi.org/10.1016/j.matchar.2019.03.014
Publication status	Published - 2019 May

Keywords

Advanced high-strength steel
Austenitic steels
Hydrogen embrittlement
Partial recrystallization
Twinning-induced plasticity

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10.1016/j.matchar.2019.03.014

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title = "Enhancement of hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steel by partial recrystallization technique",

abstract = "We suggest that the partial recrystallization is a novel pathway to increase the hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steels. The Fe-18Mn-0.6C (wt%) cold-rolled steel was annealed for from 3 min to 30 min at 650 °C. When the annealing time was shorter than 5 min, the specimen was partially recrystallized, while when the annealing time exceeded 10 min, the matrix was almost fully recrystallized. The partially recrystallized specimens exhibited the improved hydrogen embrittlement resistance because the inherited dislocation and mechanical twins in unrecrytallized grains acted as a trap site for diffusible hydrogen.",

keywords = "Advanced high-strength steel, Austenitic steels, Hydrogen embrittlement, Partial recrystallization, Twinning-induced plasticity",

author = "Park, {Tak Min} and Kim, {Min Tae} and Baik, {Kyeong Ho} and Motomichi Koyama and Jeongho Han",

note = "Funding Information: This work was supported by research fund of Chungnam National University . Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",

year = "2019",

month = may,

doi = "10.1016/j.matchar.2019.03.014",

language = "English",

volume = "151",

pages = "221--226",

journal = "Materials Characterization",

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T1 - Enhancement of hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steel by partial recrystallization technique

AU - Park, Tak Min

AU - Kim, Min Tae

AU - Baik, Kyeong Ho

AU - Koyama, Motomichi

AU - Han, Jeongho

PY - 2019/5

Y1 - 2019/5

N2 - We suggest that the partial recrystallization is a novel pathway to increase the hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steels. The Fe-18Mn-0.6C (wt%) cold-rolled steel was annealed for from 3 min to 30 min at 650 °C. When the annealing time was shorter than 5 min, the specimen was partially recrystallized, while when the annealing time exceeded 10 min, the matrix was almost fully recrystallized. The partially recrystallized specimens exhibited the improved hydrogen embrittlement resistance because the inherited dislocation and mechanical twins in unrecrytallized grains acted as a trap site for diffusible hydrogen.

AB - We suggest that the partial recrystallization is a novel pathway to increase the hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steels. The Fe-18Mn-0.6C (wt%) cold-rolled steel was annealed for from 3 min to 30 min at 650 °C. When the annealing time was shorter than 5 min, the specimen was partially recrystallized, while when the annealing time exceeded 10 min, the matrix was almost fully recrystallized. The partially recrystallized specimens exhibited the improved hydrogen embrittlement resistance because the inherited dislocation and mechanical twins in unrecrytallized grains acted as a trap site for diffusible hydrogen.

KW - Advanced high-strength steel

KW - Austenitic steels

KW - Hydrogen embrittlement

KW - Partial recrystallization

KW - Twinning-induced plasticity

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JO - Materials Characterization

JF - Materials Characterization

ER -

Enhancement of hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steel by partial recrystallization technique

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Keywords

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