Al-Si/Al4C3 master alloy has been developed by reacting the SiC particles in Al melt. The extent of SiC conversion to Al 4C3 in the Al-Si/Al4C3 master alloy has been calculated using optical emission spectroscopy. Experimental results indicated that only 70 % of SiC particles have been converted into Al 4C3 after the reaction between Al and SiC in Al/5 wt% SiCp composites at 900 °C. The grain refining efficiency of Al-Si/Al4C3 master alloy has been assessed by adding this into the Mg-3Al alloy. Grain size of Mg-3Al alloy has been significantly refined from 480 to 220 μm by the addition of 0.07 wt% of Al4C 3 particles in the form of Al-Si/Al4C3 master alloy.

Ravi K R

Department of Metallurgical & Materials Engineering

IIT Jodhpur

S. Gangadharan

N.A. Joseph

S. Sindhubairavi

J. Anburaj

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Journal	Data powered by TypesetTransactions of the Indian Institute of Metals
Publisher	Data powered by TypesetSpringer India
ISSN	09722815