Rapid solidification of Al-Cu droplets of near eutectic composition

Near eutectic Al-Cu droplets were rapidly solidified by Impulse Atomization. A wide range of microstructural scales was obtained at different cooling rates and undercoolings. The micrographs of the investigated samples revealed two distinct zones of different structural morphologies: An undulated eutectic morphology developed during recalescence following the single grain nucleation and a regular lamellar eutectic morphology resulting from the solidification of the remaining liquid post recalescence. The volume fraction of each zone was measured as a function of the droplet diameter, and the nucleation undercooling was deduced using the hypercooling limit equation. Scanning Electronic Microscopy imaging and microhardness measurements were used to evaluate the microstructural scale, and mechanical properties.


Published in:
Joint 5Th International Conference On Advances In Solidification Processes (Icasp-5) & 5Th International Symposium On Cutting Edge Of Computer Simulation Of Solidification, Casting And Refining (Csscr-5), 529, 012021
Presented at:
Joint Conference of 5th International Conference on Advances in Solidification Processes (ICASP) and 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR), Salzburg, AUSTRIA, Jun 17-21, 2019
Year:
Jan 01 2019
Publisher:
Bristol, IOP PUBLISHING LTD
ISSN:
1757-8981
Keywords:
Note:
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
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 Record created 2020-09-09, last modified 2020-10-29

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