Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy

Han Jin Kim; Min Kyung Cho; Gyeungho Kim; Seung Yong Lee; Min Gu Jo; Hayoung Kim; Jin Yoo Suh; Joonho Lee

doi:10.1007/s12540-021-01163-8

Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy

Han Jin Kim, Min Kyung Cho, Gyeungho Kim, Seung Yong Lee, Min Gu Jo, Hayoung Kim, Jin Yoo Suh, Joonho Lee

Department of Materials Science and Engineering

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

1 Citation (Scopus)

Abstract

Abstract: Hydrogen-induced variation of stacking fault energy (SFE) of a CrMnFeCoNi high-entropy alloy (HEA) was quantitatively evaluated by transmission electron microscopy (TEM) using weak-beam dark-field (WBDF) technique. Width of Shockley partial dislocations turned out to increase after hydrogen absorption, which indicates that hydrogen decreases the SFE of the alloy: from 31.5 ± 3.5 to 22.5 ± 2.5 mJm⁻² by introduction of hydrogen into the lattice with approximate concentration of 115 wppm. This report provides the first direct observation of stacking faults under the influence of hydrogen in a face-centered cubic metallic structure. Graphical Abstract: [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	2637-2645
Number of pages	9
Journal	Metals and Materials International
Volume	28
Issue number	11
DOIs	https://doi.org/10.1007/s12540-021-01163-8
Publication status	Published - 2022 Nov

Keywords

High entropy alloy
Hydrogen embrittlement
Stacking fault energy
Weak-beam dark-field

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.1007/s12540-021-01163-8

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title = "Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy",

abstract = "Abstract: Hydrogen-induced variation of stacking fault energy (SFE) of a CrMnFeCoNi high-entropy alloy (HEA) was quantitatively evaluated by transmission electron microscopy (TEM) using weak-beam dark-field (WBDF) technique. Width of Shockley partial dislocations turned out to increase after hydrogen absorption, which indicates that hydrogen decreases the SFE of the alloy: from 31.5 ± 3.5 to 22.5 ± 2.5 mJm−2 by introduction of hydrogen into the lattice with approximate concentration of 115 wppm. This report provides the first direct observation of stacking faults under the influence of hydrogen in a face-centered cubic metallic structure. Graphical Abstract: [Figure not available: see fulltext.]",

keywords = "High entropy alloy, Hydrogen embrittlement, Stacking fault energy, Weak-beam dark-field",

author = "Kim, {Han Jin} and Cho, {Min Kyung} and Gyeungho Kim and Lee, {Seung Yong} and Jo, {Min Gu} and Hayoung Kim and Suh, {Jin Yoo} and Joonho Lee",

note = "Funding Information: This research was supported by Korea Institute of Science and Technology (No. 2E30993), South Korea. Additionally, this work was supported by Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government (MOTIE), (P0002019, Human Resource Development Program for Industrial Innovation). Publisher Copyright: {\textcopyright} 2022, The Korean Institute of Metals and Materials.",

year = "2022",

month = nov,

doi = "10.1007/s12540-021-01163-8",

language = "English",

volume = "28",

pages = "2637--2645",

journal = "Metals and Materials International",

issn = "1598-9623",

publisher = "Korean Institute of Metals and Materials",

number = "11",

}

TY - JOUR

T1 - Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy

AU - Kim, Han Jin

AU - Cho, Min Kyung

AU - Kim, Gyeungho

AU - Lee, Seung Yong

AU - Jo, Min Gu

AU - Kim, Hayoung

AU - Suh, Jin Yoo

AU - Lee, Joonho

N1 - Funding Information: This research was supported by Korea Institute of Science and Technology (No. 2E30993), South Korea. Additionally, this work was supported by Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government (MOTIE), (P0002019, Human Resource Development Program for Industrial Innovation). Publisher Copyright: © 2022, The Korean Institute of Metals and Materials.

PY - 2022/11

Y1 - 2022/11

N2 - Abstract: Hydrogen-induced variation of stacking fault energy (SFE) of a CrMnFeCoNi high-entropy alloy (HEA) was quantitatively evaluated by transmission electron microscopy (TEM) using weak-beam dark-field (WBDF) technique. Width of Shockley partial dislocations turned out to increase after hydrogen absorption, which indicates that hydrogen decreases the SFE of the alloy: from 31.5 ± 3.5 to 22.5 ± 2.5 mJm−2 by introduction of hydrogen into the lattice with approximate concentration of 115 wppm. This report provides the first direct observation of stacking faults under the influence of hydrogen in a face-centered cubic metallic structure. Graphical Abstract: [Figure not available: see fulltext.]

AB - Abstract: Hydrogen-induced variation of stacking fault energy (SFE) of a CrMnFeCoNi high-entropy alloy (HEA) was quantitatively evaluated by transmission electron microscopy (TEM) using weak-beam dark-field (WBDF) technique. Width of Shockley partial dislocations turned out to increase after hydrogen absorption, which indicates that hydrogen decreases the SFE of the alloy: from 31.5 ± 3.5 to 22.5 ± 2.5 mJm−2 by introduction of hydrogen into the lattice with approximate concentration of 115 wppm. This report provides the first direct observation of stacking faults under the influence of hydrogen in a face-centered cubic metallic structure. Graphical Abstract: [Figure not available: see fulltext.]

KW - High entropy alloy

KW - Hydrogen embrittlement

KW - Stacking fault energy

KW - Weak-beam dark-field

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U2 - 10.1007/s12540-021-01163-8

DO - 10.1007/s12540-021-01163-8

M3 - Article

AN - SCOPUS:85132605500

SN - 1598-9623

VL - 28

SP - 2637

EP - 2645

JO - Metals and Materials International

JF - Metals and Materials International

IS - 11

ER -

Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy

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Keywords

ASJC Scopus subject areas

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