LAUSR

Abstract The effects of directions and magnitudes of static electrical field on solidification of Al 33 wt.%Cu eutectic alloy were investigated. For this purpose, a new directional solidification apparatus was specially designed to solidify the Al Cu eutectic alloy under static high electrical field (E). For the first time, the Al Cu molten eutectic alloy was solidified under different directions; parallel and antiparallel of the solid liquid interface growth direction (E+ and E−, respectively) and magnitudes (7–10 kV/cm) of static high electrical fields. The lamellar spacing (λ), eutectic grain size (EGS) and hardness (HB) of the Al Cu eutectic alloy solidified with different values of E+ and E− were measured with standards methods. It was observed that the static electrical field is an effective control parameter on the directional solidification and the values of λ, EGS and HB are increased and decreased with increasing the values of E+ and E−, respectively in the Al Cu eutectic alloy. Finally, the dependency of λ, EGS and HB values on E+ and E− values were obtained with linear regression analysis in the Al Cu eutectic alloy.