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Title: Potential of Al-Ti-MgAl2O4 master alloy and ultrasonic cavitation on the grain refinement of a cast aluminum alloy
Authors: Sreekumar, VM
Hari Babu, N
Eskin, D
Keywords: In-situ reaction;Grain refinement;MgAl2O4;Ultrasonic cavitation;Aluminum alloy
Issue Date: 2016
Publisher: Springer Verlag
Citation: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, (2016)
Abstract: A new grain refining master alloy containing MgAl2O4 and Ti was synthesized by in-situ reaction of TiO2 particles in an Al-Mg melt. MgAl2O4 particles formed were distributed in the melt by ultrasonic cavitation processing. The obtained master alloy showed considerable (50%) grain refining ability in a commercial A357-type Al-Si alloy. Ultrasonication contributed further 25% in the grain refinement. In comparison with a commercial Al-5% Ti-1% B master alloy, the efficiency of the new master alloy is less at a lower addition rate. However, both master alloys performed similarly at higher additions. The strength and ductility of the inoculated and ultrasonicated alloy showed at least 10% and 50% increase, respectively, as compared to non-grain refined alloy.
metadata.dc.relation.isreplacedby: 2438/13911
ISSN: 1543-1916
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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