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http://bura.brunel.ac.uk/handle/2438/13911| 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 |
| Issue Date: | 24-Oct-2016 |
| Citation: | Sreekumar, V.M., Hari Babu, N. and Eskin, D. (2017) 'Potential of Al-Ti-MgAl2O4 master alloy and ultrasonic cavitation on the grain refinement of a cast aluminum alloy', Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 48B (1), pp. 208 - 219. doi: 10.1007/s11663-016-0824-5. |
| Abstract: | Copyright © The Author(s) 2016. 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 pct) grain refining ability in a commercial A357-type Al-Si alloy. Ultrasonication contributed further to 25 pct in the grain refinement. In comparison with a commercial Al-5 pct Ti-1 pct B master alloy, the efficiency of the new master alloy is less at a lower addition rate. Nevertheless, both master alloys performed similarly at higher additions. The strength and ductility of the inoculated and ultrasonicated alloy showed at least a 10 pct and a 50 pct increase, respectively, as compared with non-grain-refined alloy and a similar mechanical performance in comparison with the alloy inoculated with Al-5 pct Ti-1 pct B master alloy. |
| URI: | https://bura.brunel.ac.uk/handle/2438/13911 |
| DOI: | https://doi.org/10.1007/s11663-016-0824-5 |
| metadata.dc.relation.replaces: | https://bura.brunel.ac.uk/handle/2438/13308 2438/13308 |
| ISSN: | 1073-5615 |
| Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
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|---|---|---|---|---|
| FullText.pdf | 5.78 MB | Adobe PDF | View/Open |
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