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정연조(Yeon-Jo Jung),박성하(Yeon-Jo Jung) 산업기술교육훈련학회 2011 산업기술연구논문지 (JITR) Vol.16 No.4
Al-Si alloys and Al-Si composites with Al2O3 particle-reinforcement,(Al-x%Si /y%Al2O3p(x : 6, 12,18, y : 1, 2, 3, 4, 5, Al2O3 particlesize : 50, 90μm) were fabricated by Rheocompocasting process and its fluidity was characterized in the spiral type steel mould. The fluidity of Al-Si/Al2O3p composite decreased as the Al2O3 content increased from 1wt% to 5wt% and at all the compositions of hypoeutectic, eutectic and hypoeutectic. It is found that the fluidity(F) was affected by the surface area(S) of Al2O3 rather than its volume fraction. The fluidity went down as the surface area became greater and can be expressed by periodic equations.