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Experimental and simulation studies of solidification behaviour in undercooled CuCoNi equiatomic medium entropy alloy

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Abstract

Undercooling studies were carried out in equiatomic CuCoNi system with an aim to understand the growth kinetics and microstructural variations as a function of undercooling. The morphological change in microstructure was observed and correlated with the undercooling obtained. Non-linear variation of growth velocity with respect to the increase in undercooling was obtained from high-speed video measurements. The variation in growth velocity was compared with the dendritic growth model with a modified kinetic undercooling term. The segregation profile was predicted using multi-phase field method and compared with the experimental data. Micro-hardness variation was correlated with the undercooling obtained.

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Correspondence to Gandham Phanikumar.

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Rahul, M.R., Phanikumar, G. Experimental and simulation studies of solidification behaviour in undercooled CuCoNi equiatomic medium entropy alloy. Eur. Phys. J. Spec. Top. 229, 145–155 (2020). https://doi.org/10.1140/epjst/e2019-900111-5

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