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

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

Research output: Contribution to journalArticle

57 Citations (Scopus)

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
StatePublished - Jul 15 1997

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Density of liquids
heat resistant alloys
liquid metals
Superalloys
Transition metals
estimating
transition metals
liquids
estimates
Chemical elements
Density (specific gravity)
Temperature
regression analysis
Liquids
Chemical analysis
temperature
coefficients

Keywords

  • Density
  • Liquid-transition metals
  • Superalloys

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Estimating densities of liquid transition-metals and Ni-base superalloys. / Sung, P. K.; Poirier, David R; McBride, E.

In: Materials Science and Engineering A, Vol. 231, No. 1-2, 15.07.1997, p. 189-197.

Research output: Contribution to journalArticle

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