High temperature wear in CoCrFeNiCux high entropy alloys: The role of Cu. (1st March 2019)

• Record Type: Journal Article
• Authors: Verma, A.; Tarate, P.; Abhyankar, A.C.; Mohape, M.R.; Gowtam, D.S.; Deshmukh, V.P.; Shanmugasundaram, T.
• Is Part Of: Scripta materialia. Number 161(2019)
• Page Start: 28
• Page End: 31
• Publication Date: 2019-03-01
• Subjects: High entropy alloys -- CoCrCuFeNi -- High temperature wear -- Phase formation -- Self-lubricating behaviour; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.10.007
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A series of CoCrFeNiCux (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) high entropy alloys (HEA) were prepared using arc melting technique and the effect of Cu on microstructure evolution and wear was studied both at room and high temperature. Microstructure reveals two phases, namely, CoCrFeNi and pure Cu. Wear rate at room temperature (RT) as well as at elevated temperatures (ET) decreases with increase in Cu content. However, wear resistance is found to be more at ET than RT. This is attributed to the self-lubricating behaviour of Cu at elevated temperature. Graphical abstract: