Potential of Al-Ti-MgAl2O4 master alloy and ultrasonic cavitation on the grain refinement of a cast aluminum alloy
| Autor: | Dmitry G. Eskin, V. M. Sreekumar, Nadendla Hari Babu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
6111 aluminium alloy
Materials science Aluminum alloy Alloy chemistry.chemical_element 02 engineering and technology engineering.material 01 natural sciences Aluminium 0103 physical sciences Agency (sociology) Materials Chemistry European commission алюминиевые сплавы 010302 applied physics Ultrasonic cavitation Metallurgy In-situ reaction Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics chemistry MgAl2O4 Mechanics of Materials engineering ультразвуковая кавитация 0210 nano-technology Grain refinement |
| Zdroj: | Metallurgical and materials transactions B. 2017. Vol. 48B, № 1. P. 208-219 |
| Popis: | 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. The authors wish to acknowledge financial support from the , which is co-funded by the European Commission in the 7th Framework Program ExoMet Project (Contract FP7-NMP3-LA-2012-280421); European Space Agency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|