Hydrogen embrittlement of additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy

Di Wan; Shuai Guan; Dong Wang; Xu Lu; Jun Ma

doi:10.1016/j.corsci.2021.110007

Hydrogen embrittlement of additively manufactured AlCoCrFeNi_2.1 eutectic high-entropy alloy

Di Wan^*, Shuai Guan, Dong Wang, Xu Lu, Jun Ma

^*Corresponding author for this work

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

31 Citations (Scopus)

Abstract

AlCoCrFeNi_2.1 eutectic high-entropy alloy (HEA) was fabricated in as-cast and additively manufactured (AM) states. The hydrogen embrittlement susceptibility of both materials was investigated through in-situ uniaxial tensile test. Combining several advanced high-resolution scanning electron microscopy (SEM)-based techniques, the deformation and hydrogen embrittlement behavior have been intensively discussed. Interfacial cracking along both phase boundaries and grain boundaries are found to be responsible for the hydrogen-assisted fracture of this material. The cracking susceptibility has a dependence on the manufactured phase morphology. The orientation relationship between the phases and the misorientation between grains also have a significant impact on the hydrogen-induced cracks.

Original language	English
Article number	110007
Journal	Corrosion Science
Volume	195
DOIs	https://doi.org/10.1016/j.corsci.2021.110007
Publication status	Published - Feb 2022
Externally published	Yes

Keywords

Additive manufacturing
Electron backscattered diffraction (EBSD)
Electron channeling contrast imaging (ECCI)
High-entropy alloy (HEA)
Hydrogen embrittlement
Tensile test

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10.1016/j.corsci.2021.110007

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title = "Hydrogen embrittlement of additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy",

abstract = "AlCoCrFeNi2.1 eutectic high-entropy alloy (HEA) was fabricated in as-cast and additively manufactured (AM) states. The hydrogen embrittlement susceptibility of both materials was investigated through in-situ uniaxial tensile test. Combining several advanced high-resolution scanning electron microscopy (SEM)-based techniques, the deformation and hydrogen embrittlement behavior have been intensively discussed. Interfacial cracking along both phase boundaries and grain boundaries are found to be responsible for the hydrogen-assisted fracture of this material. The cracking susceptibility has a dependence on the manufactured phase morphology. The orientation relationship between the phases and the misorientation between grains also have a significant impact on the hydrogen-induced cracks.",

keywords = "Additive manufacturing, Electron backscattered diffraction (EBSD), Electron channeling contrast imaging (ECCI), High-entropy alloy (HEA), Hydrogen embrittlement, Tensile test",

author = "Di Wan and Shuai Guan and Dong Wang and Xu Lu and Jun Ma",

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doi = "10.1016/j.corsci.2021.110007",

language = "English",

volume = "195",

journal = "Corrosion Science",

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TY - JOUR

T1 - Hydrogen embrittlement of additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy

AU - Wan, Di

AU - Guan, Shuai

AU - Wang, Dong

AU - Lu, Xu

AU - Ma, Jun

PY - 2022/2

Y1 - 2022/2

N2 - AlCoCrFeNi2.1 eutectic high-entropy alloy (HEA) was fabricated in as-cast and additively manufactured (AM) states. The hydrogen embrittlement susceptibility of both materials was investigated through in-situ uniaxial tensile test. Combining several advanced high-resolution scanning electron microscopy (SEM)-based techniques, the deformation and hydrogen embrittlement behavior have been intensively discussed. Interfacial cracking along both phase boundaries and grain boundaries are found to be responsible for the hydrogen-assisted fracture of this material. The cracking susceptibility has a dependence on the manufactured phase morphology. The orientation relationship between the phases and the misorientation between grains also have a significant impact on the hydrogen-induced cracks.

AB - AlCoCrFeNi2.1 eutectic high-entropy alloy (HEA) was fabricated in as-cast and additively manufactured (AM) states. The hydrogen embrittlement susceptibility of both materials was investigated through in-situ uniaxial tensile test. Combining several advanced high-resolution scanning electron microscopy (SEM)-based techniques, the deformation and hydrogen embrittlement behavior have been intensively discussed. Interfacial cracking along both phase boundaries and grain boundaries are found to be responsible for the hydrogen-assisted fracture of this material. The cracking susceptibility has a dependence on the manufactured phase morphology. The orientation relationship between the phases and the misorientation between grains also have a significant impact on the hydrogen-induced cracks.

KW - Additive manufacturing

KW - Electron backscattered diffraction (EBSD)

KW - Electron channeling contrast imaging (ECCI)

KW - High-entropy alloy (HEA)

KW - Hydrogen embrittlement

KW - Tensile test

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U2 - 10.1016/j.corsci.2021.110007

DO - 10.1016/j.corsci.2021.110007

M3 - Article

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SN - 0010-938X

VL - 195

JO - Corrosion Science

JF - Corrosion Science

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ER -

Hydrogen embrittlement of additively manufactured AlCoCrFeNi_2.1 eutectic high-entropy alloy

Abstract

Keywords

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