Abstract
Mainly for aluminum castings the properties depend on the grain structure, it is desirable to achieve a fine equiaxed grain structure. The formation of fine equiaxed grain structure depends on the rate of solidification, addition of grain refiners. Al-Ti-B master alloys are used in Al-Si alloys casting industries as a grain refiner to improve the casting properties. This research work investigates the combined effect of the addition of 2% Al-5Ti-1B and electromagnetic induction with T6 heat treatment on the mechanical properties and wear properties of LM25 alloy casting. The mechanical properties assessed are hardness and ultimate tensile strength (UTS), microstructure examination, fracture analysis of the castings are studied. It is found that mechanical properties and wear properties of LM25 alloy have been considerably improved by subjecting the alloy to combined effect of the addition of 2% Al-5Ti-1B and electromagnetic induction with T6 heat treatment.
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