Geometric modelling of viscosity of coppercontaining liquid alloys

ABSTRACT
In this work, viscosities of ternary Au–Ag–Cu and Al–Cu–Si liquid alloys
have been calculated as a function of gold, aluminium and copper
compositions for the sections Au–Ag–Cu (xAg/xCu = 0.543 at 1373 K),
Alx(Cu50–Si50)(1–x) and Cux(Al50–Si50)(1–x) at 1375 K using Chou’s general
solution model, Muggianu, Kohler, Toop, Hillert, Budai et al., Kozlov
et al., Schick et al. and Kaptay et al. models. The present study finds
that a comparison of the predicted values of viscosities associated
with the geometric and physical models indicate good mutual
agreement. The Muggianu model indicates the best agreement with
the results obtained for Au–Ag–Cu and Alx–Cu50–Si50 alloy systems and
the Kaptay et al. model, which is a physical model, indicates the best
agreement with the results obtained for Al50–Cux–Si50.