Effect of the Alloy Composition on the Grain Refinement Of Aluminum Alloys

Abstract

Careful experiments were carried out to evaluate the effect of solute element on grain refinement in aluminum based eutectic alloys. Grain size of the as-cast structure was measured. The measured grain size was plotted against the undercooling parameter, P, the growth restriction factor, Q, and the solidification interval, ��T, of the alloys. The results indicated that grain size decreases with increasing ��T monotonically over the whole range of the hypoeutectic compositions whereas the relationships between the grain size and P or Q are ��V�� type curves.