Formation rules of single phase solid solution in high entropy alloys. Issue 6 (12th April 2016)

• Record Type: Journal Article
• Authors: Jiang, L.; Lu, Y.P.; Jiang, H.; Wang, T.M.; Wei, B.N.; Cao, Z.Q.; Li, T.J.
• Is Part Of: Materials science and technology. Volume 32:Issue 6(2016)
• Page Start: 588
• Page End: 592
• Publication Date: 2016-04-12
• Subjects: High entropy alloys -- Structure predication -- Alloy design -- Solid solution; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1179/1743284715Y.0000000130
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : A new empirical rule to form single phase solid solution structured high entropy alloys was proposed by integrating three dependent parameters, i.e. atomic size difference δ, mixing enthalpy Δ H mix and valence electron concentration VEC . It was found that the single phase face centred cubic solid solution will form if δ < 4.27%, − 7.27 kJ mol − 1 < Δ H mix < 4 kJ mol − 1 and VEC >8, while the single phase body centred cubic solid solution will form in the case of δ < 4.27%, − 7.27 kJ mol − 1 < Δ H mix < 4 kJ mol − 1 and VEC < 6.87. This empirical rule was verified by typical high entropy alloys that have been reported.