Golden Mean analysis of bulk metallic glasses with critical diameter over half-inch for their mole fractions of compositions

Akira Takeuchi, A. R. Yavari, A. Inoue

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Eighteen bulk metallic glasses (BMGs) with critical diameters over ∼15 mm in Pd-, Zr-, Mg-, Y-, La-, Pt- and Ca-based multicomponent alloys were analyzed for their mole fractions of compositions with Golden Mean (φ{symbol} ∼ 1.618). The results proved that the 18 BMG compositions are describable with mφ{symbol}-n or mΦ-n where Φ-n is φ{symbol}-(n+1) plus φ{symbol}-(n-1) and m and n are positive integers. The maximum difference in fractions between the analyzed and experimental compositions was 0.038. The irrational nature of φ{symbol} makes the compositions of the 18 BMGs different from those of the stoichiometric intermetallic compounds and near eutectic compositions, leading to the high glass-forming ability. The possible prototypes of the 18 BMGs have the ability to form critically-percolated local atomic arrangements for both Metal-Metal and Metal-Metalloid types of BMGs. Golden Mean analysis provides a new alloy design for fractions of alloying elements owing to its irrationality.

Original languageEnglish
Pages (from-to)696-703
Number of pages8
JournalIntermetallics
Volume17
Issue number9
DOIs
Publication statusPublished - 2009 Sep 1

Keywords

  • B. Alloy design
  • B. Glasses, metallic
  • E. Phase diagram, prediction
  • E. Phase stability, prediction

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Golden Mean analysis of bulk metallic glasses with critical diameter over half-inch for their mole fractions of compositions'. Together they form a unique fingerprint.

  • Cite this