Effect of a grain refiner cum modifier on mechanical properties of Al-7Si and Al-11Si alloys View Full Text


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Article Info

DATE

2013-03-10

AUTHORS

S. M. Jigajinni, K. Venkateswarlu, S. A. Kori

ABSTRACT

This study evaluates the influence of grain refiners/modifiers on the mechanical properties of the Al-7Si and Al-11Si alloys with an experiment of quantitative and qualitative correlations with the microstructure. Modification of Al-Si alloys with strontium additions and grain refinement with Al-Ti, Al-B and Al-T-B master alloy additions are demonstrated to be efficient on Al-Si alloys. A single master alloy with combined additions of Sr and Ti and/or B was prepared and the microstructure and mechanical properties were studied. The results show that boron rich (Al-3B-Sr and Al-1Ti-3B-Sr) master alloys are more efficient than Ti rich (Al-3Ti-Sr and Al-5Ti-1B-Sr) master alloys considering their combined grain refinement and modification effect on Al-7Si and Al-11Si alloys. However, the presence of Sr does not influence the grain refinement. Similarly, presence of grain refiner does not influence the modification of eutectic Si. More... »

PAGES

171-181

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12540-013-2006-1

DOI

http://dx.doi.org/10.1007/s12540-013-2006-1

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003461269


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