Alloying and thermal behaviour of CoCrFeNiMn0.5Ti0.5 high-entropy alloy synthesised by mechanical alloying. Issue 1 (January 2016)

• Record Type: Journal Article
• Authors: Niu, B.; Ji, W.; Li, N.; Zhang, F.; Wu, Y.
• Is Part Of: Materials science and technology. Volume 32:Issue 1(2016)
• Page Start: 94
• Page End: 98
• Publication Date: 2016-01
• Subjects: High-entropy alloys -- Mechanical alloying -- Microstructure -- Morphology -- Thermal analysis; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1179/1743284715Y.0000000124
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : An inequi-atomic CoCrFeNiMn0.5 Ti0.5 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 μm 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°C; the liquidus point of the face-centred cubic phases was 1402.8°C.