Thermal conductivity of Ni3V-Ni3Al pseudo-binary alloys

Satoshi Semboshi, Hiroyuki Tsuda, Yasuyuki Kaneno, Akihiro Iwase, Takayuki Takasugi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The effect of changes in the composition and microstructure of the Ni3V-Ni3Al pseudo-binary alloys on their thermal conductivity has been investigated. For Ni3V and Ni3Al-based single-phase alloys, the thermal conductivity shows a maximum value at the stoichiometric compositions, and it decreases as the V (or Al) content of the Ni3Al (or Ni3V) alloy increases, following the Nordheim rule. For Ni3V-Ni3Al two-phase alloys, the thermal conductivity of the constituent Ni3Al phase exhibits a smaller value than that of the Ni3V phase. Eventually, the thermal conductivity of the two-phase alloys decreases as the Al content increases because of the increase in the volume fraction of the Ni3Al phase with low conductivity. As the temperature increases from 293 K to 1073 K, the conductivity increases for all of the alloys but not for stoichiometric Ni3V. However, the dependence of the thermal conductivity on the alloy composition between 293 K and 1073 K is similar. Hence, it is confirmed that the thermal conductivity of the Ni3V-Ni3Al pseudo-binary alloys is controlled by the composition and volume fraction of the constituent phase.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalIntermetallics
Volume59
DOIs
Publication statusPublished - 2015 Apr

Keywords

  • A. Intermetallics
  • B. Thermal properties
  • D. Microstructure
  • E. Physical properties

ASJC Scopus subject areas

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

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