Open AccessTHE EFFECT OF GRAIN REFINING OF PRIMARY SILICON ON THE FLUIDITY OF Al-Si CASTING ALLOYS
Author(s) -
Adefuye O.A,
K. A. Adedeji,
Fadipe O.L,
Orisaleye J.I
Publication year - 2021
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2021.v05i09.010
Subject(s) - silicon , eutectic system , materials science , refining (metallurgy) , alloy , casting , aluminium , metallurgy , mold , composite material
Aluminium-silicon alloys possess high mechanicalstrength to density ratio which makes it suitable for wideengineering applications. Fluidity affects the properties ofthe alloys. Silicon increases the fluidity of Al-Si alloys. Therefinement of silicon alloys improves the mechanicalproperty of the alloys. This study investigated the fluidity ofnineteen Al-Si alloys made with silicon of 99.999% purity andaluminum of 99.999% purity. A straight channels mold wasutilized in determining the fluidity. The casting modulus ofthe channels varied between 0.2 mm and 2.9 mm. Using thesame quality of materials, a primary silicon refiner Al-Cu-Pwas added to the alloys. The result was an unexpected 40%increase in fluidity for the Al-8%Si alloy. A decrease influidity from 35% to 10% was observed in the fluidity of thehyper-eutectic alloys.