Mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy fabricated with selective electron beam melting

Kosuke Kuwabara; Hiroshi Shiratori; Tadashi Fujieda; Kenta Yamanaka; Yuichiro Koizumi; Akihiko Chiba

doi:10.1016/j.addma.2018.06.006

Mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy fabricated with selective electron beam melting

Kosuke Kuwabara, Hiroshi Shiratori, Tadashi Fujieda, Kenta Yamanaka, Yuichiro Koizumi, Akihiko Chiba

Materials Processing and Characterization Division

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

87 Citations (Scopus)

Abstract

Additive manufacturing is expected to be the manufacturing method for components made with high-entropy alloys (HEAs). In this study, the mechanical and electrochemical behaviors were investigated for equi-molar HEA (AlCoCrFeNi) obtained with selective electron beam melting (SEBM). The mechanical properties of SEBM products were improved compared with those of a cast specimen. Electrochemical measurements in artificial seawater revealed the corrosion behaviors of HEA (AlCoCrFeNi). The pitting potential of SEBM specimens (0.112 V vs. Ag/AgCl) was lower than that of a cast specimen (0.178 V vs. Ag/AgCl). The mechanical and electrochemical properties of SEBM products were influenced by the phase morphologies formed during the SEBM process.

Original language	English
Pages (from-to)	264-271
Number of pages	8
Journal	Additive Manufacturing
Volume	23
DOIs	https://doi.org/10.1016/j.addma.2018.06.006
Publication status	Published - 2018 Oct

Keywords

Additive manufacturing
High entropy alloy
Selective electron beam melting

ASJC Scopus subject areas

Biomedical Engineering
Materials Science(all)
Engineering (miscellaneous)
Industrial and Manufacturing Engineering

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10.1016/j.addma.2018.06.006

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title = "Mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy fabricated with selective electron beam melting",

abstract = "Additive manufacturing is expected to be the manufacturing method for components made with high-entropy alloys (HEAs). In this study, the mechanical and electrochemical behaviors were investigated for equi-molar HEA (AlCoCrFeNi) obtained with selective electron beam melting (SEBM). The mechanical properties of SEBM products were improved compared with those of a cast specimen. Electrochemical measurements in artificial seawater revealed the corrosion behaviors of HEA (AlCoCrFeNi). The pitting potential of SEBM specimens (0.112 V vs. Ag/AgCl) was lower than that of a cast specimen (0.178 V vs. Ag/AgCl). The mechanical and electrochemical properties of SEBM products were influenced by the phase morphologies formed during the SEBM process.",

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T1 - Mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy fabricated with selective electron beam melting

AU - Kuwabara, Kosuke

AU - Shiratori, Hiroshi

AU - Fujieda, Tadashi

AU - Yamanaka, Kenta

AU - Koizumi, Yuichiro

AU - Chiba, Akihiko

PY - 2018/10

Y1 - 2018/10

N2 - Additive manufacturing is expected to be the manufacturing method for components made with high-entropy alloys (HEAs). In this study, the mechanical and electrochemical behaviors were investigated for equi-molar HEA (AlCoCrFeNi) obtained with selective electron beam melting (SEBM). The mechanical properties of SEBM products were improved compared with those of a cast specimen. Electrochemical measurements in artificial seawater revealed the corrosion behaviors of HEA (AlCoCrFeNi). The pitting potential of SEBM specimens (0.112 V vs. Ag/AgCl) was lower than that of a cast specimen (0.178 V vs. Ag/AgCl). The mechanical and electrochemical properties of SEBM products were influenced by the phase morphologies formed during the SEBM process.

AB - Additive manufacturing is expected to be the manufacturing method for components made with high-entropy alloys (HEAs). In this study, the mechanical and electrochemical behaviors were investigated for equi-molar HEA (AlCoCrFeNi) obtained with selective electron beam melting (SEBM). The mechanical properties of SEBM products were improved compared with those of a cast specimen. Electrochemical measurements in artificial seawater revealed the corrosion behaviors of HEA (AlCoCrFeNi). The pitting potential of SEBM specimens (0.112 V vs. Ag/AgCl) was lower than that of a cast specimen (0.178 V vs. Ag/AgCl). The mechanical and electrochemical properties of SEBM products were influenced by the phase morphologies formed during the SEBM process.

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KW - High entropy alloy

KW - Selective electron beam melting

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Mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy fabricated with selective electron beam melting

Abstract

Keywords

ASJC Scopus subject areas

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