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

Research output: Contribution to journalArticle

19 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 languageEnglish
Pages (from-to)264-271
Number of pages8
JournalAdditive Manufacturing
Volume23
DOIs
Publication statusPublished - 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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