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Solidification behaviour of undercooled equiatomic FeCuNi alloy
M. R. Rahul,
Published in Elsevier Ltd
2020
Volume: 815
   
Abstract
Studies on solidification of equiatomic multi-component alloys are essential in developing melt-route processing of high entropy alloys. The extent of undercooling during processing controls microstructure evolution. In this study, we present solidification studies on undercooled equiatomic FeCuNi alloy carried out using melt fluxing technique. The alloy shows a two-phase (FCC + FCC) microstructure even at deep undercooling of more than 200 K. The dendrite growth velocity measured using high-speed video imaging shows a nonlinear increase in growth velocity with the increase in the extent of undercooling. A modified dendritic growth model was able to predict the growth velocity. The segregation behaviour and microstructures at different extents of undercooling can be predicted using phase field simulation. © 2019 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Alloys and Compounds
PublisherData powered by TypesetElsevier Ltd
ISSN09258388
Open AccessNo
Concepts (17)
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    Copper alloys
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    High speed cameras
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    Microstructure
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    Segregation (metallography)
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    Solidification
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    Ternary alloys
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    UNDERCOOLING
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    Velocity
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    DENDRITIC GROWTH
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    DENDRITIC GROWTH MODELS
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    HIGH SPEED VIDEO IMAGING
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    MELT-FLUXING TECHNIQUE
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    Micro-structure evolutions
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    MULTI-COMPONENT ALLOY
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    PHASE-FIELD SIMULATION
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    SOLIDIFICATION BEHAVIOUR
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    Iron alloys