Estimation of shrinkage porosity of a cast aluminium alloy

Vol. 2 No. 2

Year: 2012

Issue: February-April

Title: Estimation of shrinkage porosity of a cast aluminium alloy 

Author Name: S. Santhi, S.B Sakri, D. Hanumantha Rao, S. Sundarrajan 

Synopsis: 

Shrinkage characteristic of US A356 cast aluminium alloy has been discussed in the present study. The reduction in specific volume leads to shrinkage in castings and it can be visualized as a casting defect. The shrinkage characteristic has been studied using finite difference based casting process simulation software and it is quantified using mathematical formulae. CAD has been used for construction of three dimensional model of the shrinkage defect. Shrinkage characteristic has also been quantified through experimental validation studies and compared well with casting process simulation. Shrinkage characteristic study and control is essential for producing defect free castings. Influence of casting shape on the shrinkage characteristic has been studied in this paper.