Alloy designs of high-entropy crystalline and bulk glassy alloys by evaluating mixing enthalpy and delta parameter for quinary to decimal equi-atomic alloys

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Abstract

The values of mixing enthalpy (ΔHmix) and Delta parameter (δ) were calculated with 73 elements from Miedema's model for multicomponent equi-atomic alloys to investigate the possibilities of the alloys to be formed into high-entropy (H-E) alloys or high-entropy bulk metallic glasses (HE-BMGs). The equi-atomic alloys from about 15 million (73C5) quinary to 621 billion (73C10) decimal systems were evaluated by referring to a ΔHmixδ diagram for zones S and B's for H-E alloys with disordered solid solutions and BMGs, respectively, reported by Zhang et al. The results revealed that the number of quinary equi-atomic alloys plotted in zone S is 28405 (∼0.19% in 73C5), whereas those in zones B1 and B2 for conventional and Cu- and Mg-based BMGs, respectively, were 1036385 and 21518 (∼6.90 and ∼0.14%), respectively. This kind of statistical approach using ΔHmixδ diagram will lead to finding out unprecedented H-E alloys and HE-BMGs.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalMaterials Transactions
Volume55
Issue number1
DOIs
Publication statusPublished - 2014 Jan 22

Keywords

  • Alloy Design
  • Atomic size difference
  • Bulk metallic glass
  • Configurational entropy
  • High-entropy alloy
  • Mismatch entropy
  • Mixing enthalpy

ASJC Scopus subject areas

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

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