Authors:E. Aragon, D. Vincent, A. Zahra, and A. Sebaoun
A systematic study of Al-Zn-Sn ternary alloys by using a Tian-Calvet calorimeter with slow heating and cooling rate was carried
out and supplemented by scanning electron microscopic observations.
The results have shown that crystallization coupled with dissolution of tin into the αss′ ternary solid solution on heating is an endothermic process, while melting coupled with tin expulsion on cooling is an exothermic
one. It seems that the thermal effects of phase transition are outweighed by much stronger ones due to a large composition
change of the αss′ ternary phase.