Pd20Pt20Cu20Ni20P20 high-entropy alloy as a bulk metallic glass in the centimeter

A. Takeuchi, N. Chen, T. Wada, Y. Yokoyama, H. Kato, A. Inoue, J. W. Yeh

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A Pd20Pt20Cu20Ni20P 20 bulk metallic glass (BMG) with a high-entropy (HE) alloy composition and a maximum diameter of 10 mm was fabricated by fluxed water quenching. The system and composition of the Pd20Pt 20Cu20Ni20P20 alloy were determined from a prototype ternary Pd40Ni40P20 BMG in accordance with two strategic alloy designs of (1) HE alloy defined by an equi-atomic alloy with five or more elements and (2) exchangeability of the constituent elements with a similar chemical nature in the periodic table. Pd20Pt20Cu20Ni20P20 HE-BMG had a supercooled liquid range of 65 K and a reduced glass transition temperature of 0.71. Successful formation of Pd20Pt 20Cu20Ni20P20 HE-BMG is significant to develop new alloys for HE alloys and BMGs.

Original languageEnglish
Pages (from-to)1546-1554
Number of pages9
Issue number10
Publication statusPublished - 2011 Oct


  • A. Multiphase intermetallics
  • B. Alloy design
  • B. Glasses, metallic
  • B. Thermal stability
  • B. Thermodynamic and thermochemical properties


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