Exploring the hydrogen absorption and strengthening behavior in nanocrystalline face-centered cubic high-entropy alloys

Zhao, Yakai; Park, Jeong Min; Murakami, Kotaro; Komazaki, Shin‐ichi; Kawasaki, Megumi; Tsuchiya, Koichi; Suh, Jin-Yoo; Ramamurty, Upadrasta; Jang, Jae-il

doi:10.1016/j.scriptamat.2021.114069

Cited by 15 publications

(2 citation statements)

References 51 publications

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“…Since the susceptibility of materials to hydrogen embrittlement (HE) is strongly correlated with their microstructure, the large fraction of GBs in nc HEAs may lead to significantly different HE behavior compared to cg HEAs. To shed light on this, Zhao et al 126) investigated the hydrogen absorption and its effect on the hardness of two nc HEAs (i.e., CoCrFeNi and CoCrFeMnNi) and compared the results with those obtained from cg counterparts. As shown in Fig.…”

Section: Investigation Of Hydrogen Effect On Mechanical Behaviormentioning

confidence: 99%

A Review of Recent Research on Nanoindentation of High-Entropy Alloys Processed by High-Pressure Torsion

et al. 2023

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High entropy alloys (HEAs) are a novel class of materials that have emerged as potential candidates for various industrial applications due to their excellent mechanical properties at cryogenic, ambient, elevated temperatures, and even under a hydrogen environment. The incorporation of nanocrystalline (nc) structure into HEAs has attracted significant attention for the further enhancement of their exceptional properties, as exceptional grain refinement usually results in enhanced strength without a large expense of ductility. High-pressure torsion (HPT) is often considered one of the most efficient methods for nanocrystallization, and this also holds true for HEAs. Recently, nanoindentation technique has been widely utilized to explore the relationship between HPT-induced grain refinement and mechanical behavior due to the inhomogeneous microstructure within the HPT disk. In this report, recent nanoindentation studies performed on HPT-processed HEAs are comprehensively reviewed with special emphasis on the nanomechanical behavior of nc HEAs.

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Section: Investigation Of Hydrogen Effect On Mechanical Behaviormentioning

confidence: 99%

A Review of Recent Research on Nanoindentation of High-Entropy Alloys Processed by High-Pressure Torsion

et al. 2023

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“…While vast majority of research has devoted to the understanding of peculiar atomic structures and mechanical properties of high-entropy alloys in structural applications, functional properties are emerging subjects of high-entropy alloys, which are rapidly growing recently. 8) The subjects of scientific and technological interest for functional properties of high-entropy alloys include hydrogen storage, 116,154) catalysis 155160) and so on. The research area is expanding to include not only metallic systems as mentioned above but also some ceramic (oxide, nitride, carbide and boride) systems in earnest since 2015 when entropy-stabilized oxides with the NaCl structure was discovered.…”

Section: (B))mentioning

confidence: 99%

Recent Progress in Our Understanding of Phase Stability, Atomic Structures and Mechanical and Functional Properties of High-Entropy Alloys

2022

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This paper reviews a current trend and recent progress in research on phase stability, atomic structures, mechanical and functional properties of high-entropy alloys. The survey is carried out based partly on the special issue published in April, 2020, in Materials Transactions (Vol. 61, No. 4). Research on high-entropy alloys has spread worldwide since the year of 2004, as many of them exhibit attractive properties for structural and functional applications, which have never been achieved in conventional alloys. Significant progress has been made in recent years in our understanding of high-entropy alloys in terms of processing, characterization, modeling and simulation, and so on. Some of them are briefly described in this paper.

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Hydrogen trapping and micromechanical behavior in additively manufactured CoCrFeNi high-entropy alloy in as-built and pre-strained conditions

Gao,

Lee,

Zhao

et al. 2024

Acta Materialia

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Exploring the hydrogen absorption and strengthening behavior in nanocrystalline face-centered cubic high-entropy alloys

Cited by 15 publications

References 51 publications

A Review of Recent Research on Nanoindentation of High-Entropy Alloys Processed by High-Pressure Torsion

A Review of Recent Research on Nanoindentation of High-Entropy Alloys Processed by High-Pressure Torsion

Recent Progress in Our Understanding of Phase Stability, Atomic Structures and Mechanical and Functional Properties of High-Entropy Alloys

Hydrogen trapping and micromechanical behavior in additively manufactured CoCrFeNi high-entropy alloy in as-built and pre-strained conditions

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