Al0.5TiZrPdCuNi high-entropy (H-E) alloy developed through Ti20Zr20Pd20Cu20Ni20 H-E glassy alloy comprising inter-transition metals

Akira Takeuchi, Junqiang Wang, Na Chen, Wei Zhang, Yoshihiko Yokoyama, Kunio Yubuta, Shengli Zhu

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

An Al0.5TiZrPdCuNi high-entropy (H-E) alloy with a bcc single phase was found through a Ti20Zr20Pd20Cu 20Ni20 H-E glassy alloy designed based on equi-atomicity inherent to H-E alloys. The constituent elements and the composition of the Ti20Zr20Pd20Cu20Ni20 alloy were determined by regarding a binary Cu64Zr36 bulk metallic glass as Cu60Zr40 alloy and subsequent replacements of the Cu and Zr atoms with other late- and early-transition metals, respectively. The Ti20Zr20Pd20Cu 20Ni20 alloy in a ribbon shape forms into a glassy single phase. The addition of 0.5Al to the Ti20Zr20Pd 20Cu20Ni20 H-E glassy alloy resulted in forming a bcc single phase for a rod specimen with a diameter of 1.5 mm. The analysis revealed that the Al0.5TiZrPdCuNi H-E alloy is characterized by mixing enthalpy of -46.7 kJ·mol-1 and Delta parameter of 8.8, which are considerably larger and negative for the former and larger for the latter against the conventional H-E alloys.

Original languageEnglish
Pages (from-to)776-782
Number of pages7
JournalMaterials Transactions
Volume54
Issue number5
DOIs
Publication statusPublished - 2013

Keywords

  • Alloy design
  • Atomic size ratio
  • Body centered cubic phase
  • High-entropy alloy
  • Laves phase
  • Metallic glass
  • Mixing enthalpy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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