What is percentage of the solid solubility of silicon in Aluminum ?

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Prashant Huilgol

Please refer binary Al-Si phase diagram

Songmao Liang

It is about 2.55wt.% at 577C.

Refer to the latest calculated Al-Si phase diagram:

S.-M. Liang, R. Schmid-Fetzer,Phosphorus in Al–Si Cast Alloys: Thermodynamic Prediction of the Alp and Eutectic (Si) Solidification Sequence Validated by Microstructure and Nucleation Undercooling Data Acta Mater. 72 (2014) 41-56. doi: 10.1016/j.actamat.2014.02.042.

Experiments Review paper:

J. Murray, A. McAlister,The Al-Si (Aluminum-Silicon) System J. Phase Equilib. 5 (1984) 74-84. doi: 10.1007/bf02868729.

Arun Chattopadhyay

At Eutectic point at 577C about 12.6wt% of Si is solubilized in Al, not 2.55wt%.