Research Article
CALPHAD Approach to Understand the Semi-Solid Processing Parameters of Al-6Si-4Cu Alloy
@INPROCEEDINGS{10.4108/eai.7-12-2021.2314620, author={Gopalakrishnan P and Senthilkumar M}, title={CALPHAD Approach to Understand the Semi-Solid Processing Parameters of Al-6Si-4Cu Alloy}, proceedings={Proceedings of the First International Conference on Combinatorial and Optimization, ICCAP 2021, December 7-8 2021, Chennai, India}, publisher={EAI}, proceedings_a={ICCAP}, year={2021}, month={12}, keywords={semi-solid processing; calphad; solid fraction; aluminium alloys; solidification}, doi={10.4108/eai.7-12-2021.2314620} }- Gopalakrishnan P
Senthilkumar M
Year: 2021
CALPHAD Approach to Understand the Semi-Solid Processing Parameters of Al-6Si-4Cu Alloy
ICCAP
EAI
DOI: 10.4108/eai.7-12-2021.2314620
Abstract
Semi-solid processing has some prerequisites such as the feedstock alloy must meet certain thermodynamic criteria. Therefore, to reap the full benefits of semi-solid processing, it is important to assess the compliance of commercial aluminium alloys for semi-solid processing. Hence in the current paper, thermodynamic parameters for semi-solid processing of Al-xSi-yCu (x=5,6,7 and y=3,4,5) alloys were assessed using CALPHAD approach. The results show that the thermodynamic simulation is effective in predicting the amenability of alloys for semi-solid processing. Also inferred that the variation of alloy composition within the ASTM standard range itself varies the solidification behaviour and this variation can affect semi-solid processing. Thus, a Taguchi L9 orthogonal array is constructed for various alloy compositions and based on the L9 array, the solidification curves were simulated by CALPHAD Approach. The best suited alloy and its thermodynamic parameters for semi-solid processing were identified. The simulated data for the best alloy composition is validated with the help of computer aided cooling curve analysis.