Estimating densities of liquid transition-metals and Ni-base superalloys

P. K. Sung, D. R. Poirier, E. McBride

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

To estimate the densities of liquid Ni-base superalloys, the densities and temperature coefficients of density (dρ/dT) of the liquid transition-metals, which are used as alloy elements in Ni-base superalloys, were gathered, reviewed, and applied to a simple correlation. The correlation is particularly useful to estimate dρ/dT of many transition-metals for which there are no data available. To demonstrate how the results can be applied, the densities of liquid Ni-rich Ni-Al-Cr-Ta alloys were considered and regressed to yield the liquid density as a function of temperature and composition. As a verification of this approach, the liquid densities of five Ni-base superalloys were also estimated. By including a regression estimate of the molar mixing volume, the estimates of the liquid densities agreed with the measured values to ±2.5%.

Original languageEnglish (US)
Pages (from-to)189-197
Number of pages9
JournalMaterials Science and Engineering A
Volume231
Issue number1-2
DOIs
StatePublished - Jul 15 1997

Keywords

  • Density
  • Liquid-transition metals
  • Superalloys

ASJC Scopus subject areas

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

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