Experimental and simulation studies of solidification behaviour in undercooled CuCoNi equiatomic medium entropy alloy
Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Madras, Chennai 600036, India
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Published online: 11 February 2020
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.
© EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature, 2020