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https://dspace.iiti.ac.in/handle/123456789/7514
Title: | Nano-sized Cu clusters in deeply undercooled CoCuFeNiTa high entropy alloy |
Authors: | Samal, Sumanta |
Keywords: | Cobalt alloys;Copper;Entropy;High-entropy alloys;Iron alloys;Phase separation;Solidification;Tantalum alloys;Atomic scale;Control parameters;Conventional alloys;Elemental segregation;Growth velocity;Non equilibrium;Nonequilibrium conditions;Phase-field simulation;Undercooling |
Issue Date: | 2020 |
Publisher: | Acta Materialia Inc |
Citation: | Rahul, M. R., Samal, S., Marshal, A., Balaji, V. I. N., Pradeep, K. G., & Phanikumar, G. (2020). Nano-sized cu clusters in deeply undercooled CoCuFeNiTa high entropy alloy. Scripta Materialia, 177, 58-64. doi:10.1016/j.scriptamat.2019.10.006 |
Abstract: | The non-equilibrium response of a high entropy alloy CoCuFeNiTa0.5 has been studied using undercooling as a control parameter. The solidification growth rates are rapid (30–50 m/s) at deep undercooling (>150 °C) and are comparable with conventional alloys. The elemental segregation especially that of Cu as predicted by phase field simulations in lower (<50 °C) undercooling regime matches with the experimental observations. This study indicates that even extreme non-equilibrium conditions during solidification could not avoid elemental segregation at the atomic scale. © 2019 Acta Materialia Inc. |
URI: | https://doi.org/10.1016/j.scriptamat.2019.10.006 https://dspace.iiti.ac.in/handle/123456789/7514 |
ISSN: | 1359-6462 |
Type of Material: | Journal Article |
Appears in Collections: | Department of Metallurgical Engineering and Materials Sciences |
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