Phases, microstructures and properties of multi-component FeCoNi-based alloys. Issue 6 (12th April 2020)

• Record Type: Journal Article
• Authors: Liu, Ning; Ding, Wen; Wang, Xiao Jing; Zhang, Jing; Zhou, Peng Jie; Mu, Chen
• Is Part Of: Materials science and technology. Volume 36:Issue 6(2020)
• Page Start: 654
• Page End: 660
• Publication Date: 2020-04-12
• Subjects: High-entropy alloys -- microstructure -- property -- oxidation resistance -- oxidation kinetics; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2020.1726017
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: Disordered and ordered solid solution phases are identified in FeCoNi-based multi-component alloys. An ultimate strength of 2380 MPa was achieved in the dual face-centered cubic + body-centered cubic structural (FeCoNi)60 Al15 Cr25 alloy, accompanied by a fracture strain of 38% and a hardness of 376.3 HV. After holding at 900°C for 100 h, oxidation resistance of the alloys follows by an increasing rank of (FeCoNi)85 Al15 < (FeCoNi)75 Cr25 < (FeCoNi)60 Al15 Cr25 . Moreover, the oxidation kinetic curves of the alloys follow a power-law dependence. (FeCoNi)60 Al15 Cr25 alloy shows a good trade-off of mechanical properties and an excellent oxidation resistance at evaluated temperature, and can be a potential candidate for high temperature materials.