A New Al-Zr-Ti Master Alloy for Ultrasonic Grain Refinement of Wrought and Foundry Aluminum Alloys
Abstract
A new grain refiner master alloy based on the Al-Zr-Ti system was prepared by salt-assisted synthesis. Of the Al3Zr particles in the master alloy, 90% were ranged between 1 µm and 13 µm. An 80% reduction in the grain size was observed with the addition of an equivalent 0.2 wt.% Zr master alloy combined with ultrasonic treatment in an Al alloy. The new master alloy demonstrated a 30% improvement in grain refinement efficiency as compared to the master alloy prepared from conventional binary master alloys.
- Publication:
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JOM - Journal of the Minerals, Metals and Materials Society
- Pub Date:
- December 2016
- DOI:
- 10.1007/s11837-016-2120-x
- Bibcode:
- 2016JOM....68l3088S