Estimating the mechanical properties of castings of aluminum alloys from the as-cast structure

Thermodynamic aspects of the constitution, grain refining, and solidification enthalpies of Al-Ce-Si alloys

“…pct Ce. [23][24][25][26][27][28][29] A first isothermal section in that range at 400 °C was given by Zarechnyuk [24] and Altunina et al [25] derived from the results of X-ray powder diffraction, metallography, and in some cases chemical analysis. The samples were prepared by melting Al (99.99 pct purity) and Ce (99.567 pct purity) in an alumina crucible under a protective layer of a mixture of KCl ϩ LiCl.…”

“…Raman et al [26,27] observed the formation of a ternary phase of the different AlB 2 type in a ternary alloy CeAl 1.625 Si 0.375 , which contradicts the wide composition range of CeAl x Si 2Ϫx , suggested by previous researchers. [24,25] In the studies by Raman et al, [26,27] the alloy was prepared by arc melting the elements of 99.9 pct minimum purity and wrapped in molybdenum foil after melting, which was followed by heating in evacuated silica capsules at 1000 °C for 96 hours and slow cooling in air. The existence of this ternary phase was later confirmed by Murav'eva [28] at 500 °C in an investigation of the phase equilibria for the 0 to 33 at.…”