Abstract:
In this study, the structural modification of the unidirectionally solidified aluminum-silicon eutectic alloys with antimony treatment was investigated. First, a general understanding of eutectic solidification was given and then modification mechanism of antimony was studied. In the experimental work, antimony treated aluminum-silicon eutectic alloys were unidirectionally solidified and resulting microstructure was subjected to detailed investigation. Then the mechanical properties were measured with tensile testing and Vickers hardness testing. Finally, the measured interparticle spacings have been correlated to the changes in antimony concentration, growth rate and temperature gradient.
