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题名: Enhanced strength and ductility of bulk CoCrFeMnNi high entropy alloy having fully recrystallized ultrafine-grained structure
作者: Sun, S. J.;  Tian, Y. Z.;  Lin, H. R.;  Dong, X. G.;  Wang, Y. H.;  Zhang, Z. J.;  Zhang, Z. F.
发表日期: 2017-11-5
摘要: A high efficient magnetic levitation melting technique was reported for fabricating bulk equiatomic CoCrFeMnNi high-entropy alloy (HEA) ingot with a diameter of 110 mm. The bulk ingot can be either forged or rolled. In particular, fully recrystallized ultrafine-grained (UFG) HEA with a minimum grain size of 503 +/- 181 nm was successfully obtained through a simple cold rolling and annealing process. The tensile properties of the HEA were studied by changing the grain size from the UFG regime to the coarse-grained regime. The UFG HEA exhibited a good balance of strength and ductility due to the low stacking fault energy. The linear Hall-Petch relationship was well fitted when the grain sizes range from 503 nm to 88.9 mu m. (C) 2017 Elsevier Ltd. All rights reserved.
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Recommended Citation:
Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Enhanced Strength And Ductility Of Bulk Cocrfemnni High Entropy Alloy Having Fully Recrystallized Ultrafine-grained Structure[J]. Elsevier Sci Ltd,2017,133:122-127.

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