Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 664, Issue -, Pages 227-235Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2016.04.006
Keywords
Eutectic high entropy alloy; Flow behaviour; Processing map; Efficiency power dissipation; Gleeble (R)
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Funding
- IIT Madras
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Multicomponent Co20Cu20Fe20Ni20Ti20 eutectic high entropy alloy (HEA), processed by vacuum arc melting cum suction casting technique was studied. The microstructure of this eutectic HEA consists bcc (beta) and fcc (alpha(2)) solid solution dendritic phases and eutectics (fcc (alpha(1)) plus Ti-2(Ni, Co)-type Laves phase). Serrations in the flow behaviour are attributed to multi substitutional solutes in the multi-phase microstructure. Based on the detailed analysis of mechanical data together with deformed microstructural characterization, the optimum thermo-mechanical processing conditions for hot working are identified as T=930-990 degrees C (1203-1263 K) and strain rate range of 10(-3) s(-1)-10(-1) s(-1). (C) 2016 Elsevier B.V. All rights reserved.
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