Enhancing hydrogen embrittlement resistance of medium entropy alloys by forming dislocation cell walls

Duk Hyun Chung; Young Kyun Kim; Yong Keun Kim; Sang Yoon Song; Heoun Jun Kwon; Seok Su Sohn; Young Sang Na

doi:10.1016/j.corsci.2023.111023

Enhancing hydrogen embrittlement resistance of medium entropy alloys by forming dislocation cell walls

Duk Hyun Chung
, Young Kyun Kim
, Yong Keun Kim
, Sang Yoon Song
, Heoun Jun Kwon
, Seok Su Sohn
, Young Sang Na^*

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

Hydrogen embrittlement is a complex phenomenon resulting in severe deterioration of ductility or load-bearing capacity of structural metals due to the presence of hydrogen atoms. In order to discover hydrogen-tolerant metals, in this work, we introduce two novel face-centered-cubic phase medium entropy alloys (MEAs) (Cr₁₂Ni₁₂Mn_xFe_76−x, x = 24 and 16). Interestingly, The Cr₁₂Ni₁₂Mn₂₄Fe₅₂ alloy showed high resistance to hydrogen embrittlement at ambient temperature, while exhibiting an increase in strength and ductility. Through experimental assessment, we demonstrate that the stacking fault energy and the resultant dislocation structures enable our MEA to achieve hydrogen-compatible characteristics.

Original language	English
Article number	111023
Journal	Corrosion Science
Volume	215
DOIs	https://doi.org/10.1016/j.corsci.2023.111023
Publication status	Published - 2023 May 1

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

Dislocation cell walls
Hydrogen embrittlement
Hydrogen trapping sites
Medium entropy alloys (MEAs)
Stacking fault energy

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

Access to Document

10.1016/j.corsci.2023.111023

Cite this

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title = "Enhancing hydrogen embrittlement resistance of medium entropy alloys by forming dislocation cell walls",

abstract = "Hydrogen embrittlement is a complex phenomenon resulting in severe deterioration of ductility or load-bearing capacity of structural metals due to the presence of hydrogen atoms. In order to discover hydrogen-tolerant metals, in this work, we introduce two novel face-centered-cubic phase medium entropy alloys (MEAs) (Cr12Ni12MnxFe76−x, x = 24 and 16). Interestingly, The Cr12Ni12Mn24Fe52 alloy showed high resistance to hydrogen embrittlement at ambient temperature, while exhibiting an increase in strength and ductility. Through experimental assessment, we demonstrate that the stacking fault energy and the resultant dislocation structures enable our MEA to achieve hydrogen-compatible characteristics.",

keywords = "Dislocation cell walls, Hydrogen embrittlement, Hydrogen trapping sites, Medium entropy alloys (MEAs), Stacking fault energy",

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day = "1",

doi = "10.1016/j.corsci.2023.111023",

language = "English",

volume = "215",

journal = "Corrosion Science",

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TY - JOUR

T1 - Enhancing hydrogen embrittlement resistance of medium entropy alloys by forming dislocation cell walls

AU - Chung, Duk Hyun

AU - Kim, Young Kyun

AU - Kim, Yong Keun

AU - Song, Sang Yoon

AU - Kwon, Heoun Jun

AU - Sohn, Seok Su

AU - Na, Young Sang

PY - 2023/5/1

Y1 - 2023/5/1

N2 - Hydrogen embrittlement is a complex phenomenon resulting in severe deterioration of ductility or load-bearing capacity of structural metals due to the presence of hydrogen atoms. In order to discover hydrogen-tolerant metals, in this work, we introduce two novel face-centered-cubic phase medium entropy alloys (MEAs) (Cr12Ni12MnxFe76−x, x = 24 and 16). Interestingly, The Cr12Ni12Mn24Fe52 alloy showed high resistance to hydrogen embrittlement at ambient temperature, while exhibiting an increase in strength and ductility. Through experimental assessment, we demonstrate that the stacking fault energy and the resultant dislocation structures enable our MEA to achieve hydrogen-compatible characteristics.

AB - Hydrogen embrittlement is a complex phenomenon resulting in severe deterioration of ductility or load-bearing capacity of structural metals due to the presence of hydrogen atoms. In order to discover hydrogen-tolerant metals, in this work, we introduce two novel face-centered-cubic phase medium entropy alloys (MEAs) (Cr12Ni12MnxFe76−x, x = 24 and 16). Interestingly, The Cr12Ni12Mn24Fe52 alloy showed high resistance to hydrogen embrittlement at ambient temperature, while exhibiting an increase in strength and ductility. Through experimental assessment, we demonstrate that the stacking fault energy and the resultant dislocation structures enable our MEA to achieve hydrogen-compatible characteristics.

KW - Dislocation cell walls

KW - Hydrogen embrittlement

KW - Hydrogen trapping sites

KW - Medium entropy alloys (MEAs)

KW - Stacking fault energy

UR - https://www.scopus.com/pages/publications/85148377194

U2 - 10.1016/j.corsci.2023.111023

DO - 10.1016/j.corsci.2023.111023

M3 - Article

AN - SCOPUS:85148377194

SN - 0010-938X

VL - 215

JO - Corrosion Science

JF - Corrosion Science

M1 - 111023

ER -

Enhancing hydrogen embrittlement resistance of medium entropy alloys by forming dislocation cell walls

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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