Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 32, Issue 1, Pages 94-98Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/1743284715Y.0000000124
Keywords
High-entropy alloys; Mechanical alloying; Microstructure; Morphology; Thermal analysis
Funding
- National Natural Science Foundation of China
- International Cooperation Project from the Ministry of Science and Technology of China
- Students Innovation and Entrepreneurship Training Program of WHUT [20141049701024]
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An inequi-atomic CoCrFeNiMn0.5Ti0.5 high-entropy alloy (HEA) was synthesised by mechanical alloying. The structural and morphological evolution of the alloy powder during the mechanical alloying process and the thermal behaviour of 60 h ball-milled HEA powder were investigated systematically. A simple body-centred cubic solid solution HEA structure was obtained when the blended powder was ball-milled longer than 36 h. A 60 h ball-milled powder had an average particle size of 3 mm and consisted of hard agglomerated crystalline particles with a crystal size of <20 nm. The body-centred cubic phase transformed into a face-centred cubic phase when the powder was annealed for 1 h at a temperature of 700 degrees C; the liquidus point of the face-centred cubic phases was 1402.8 degrees C.
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