Viscosities of aluminum-rich Al−Cu liquid alloys View Full Text


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Article Info

DATE

1987-06

AUTHORS

S. Ganesan, R. Speiser, D. R. Poirier

ABSTRACT

Viscosity data for Al−Cu liquid alloys in the ranges of 0≤CL≤33.1 wt pct Cu and 1173≤T ≤973 K are reviewed. It was found that Andrade's equation can be used to represent the variation of viscosity with temperature for a given composition, but that each of the two parameters in Andrade's equation shows no systematic variation with composition of the liquid-alloys. Consequently, arithmetic averages of the parameters were used and assumed to apply to all compositions in the range 0≤CL ≤33.1 wt pct Cu. Such a procedure implies that the viscosity happens to vary with composition solely because the specific volume varies with composition. In order to establish the predictability of extrapolating such simple behavior, a more complex model was considered. The latter model was recently presented by Kucharski and relates viscosity to the structure and thermodynamics of liquid alloys. Viscosities obtained by interpolating Andrade's equation and Kucharski's model compare closely; furthermore, values obtained by extrapolations to lower temperatures also compare favorably. Finally the simpler model was used to calculate the viscosity of the interdendritic liquid during solidification. More... »

PAGES

421-424

References to SciGraph publications

  • 1987-04-01. Densities of aluminum-rich Aluminum-Copper Alloys during Solidification in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf02656162

    DOI

    http://dx.doi.org/10.1007/bf02656162

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