Microstructural evolution and effect of heat treatment on the precipitation and mechanical behavior of Al<inf>0.7</inf>CoCrFeNi alloy John, R, Nagini, M, Govind, U, Malladi, SRK, Murty, BS and Fabijanic, Daniel 2022, Microstructural evolution and effect of heat treatment on the precipitation and mechanical behavior of Al0.7CoCrFeNi alloy, Journal of Alloys and Compounds, vol. 904, doi: 10.1016/j.jallcom.2022.164105. Title Microstructural evolution and effect of heat treatment on the precipitation and mechanical behavior of Al0.7CoCrFeNi alloy Author(s) John, R Nagini, M Govind, U Malladi, SRK Murty, BS Fabijanic, Daniel orcid.org/0000-0003-4857-0398 Journal name Journal of Alloys and Compounds Volume number 904 Publisher P Publication date 2022-05-25 ISSN 0925-8388 Summary The microstructural features and promising properties exhibited by Al0.7CoCrFeNi have led to extensive studies on the alloy. The current work discusses the microstructural evolution, thermal stability and mechanical behavior of the alloy. CALPHAD studies predicated the alloy to be near eutectic with pro-eutectic BCC and eutectic FCC and BCC/B2. However, experimental studies displayed the FCC phase to evolve from a high-temperature B2. Interfacial energy, chemical inhomogeneity and cooling rate were attributed to play a key role in the microstructural evolution and phase stability. Heat treatment resulted in the dissolution of BCC and the formation of Al-Ni-rich B2 phase. During solidification and heat treatment, Widmanstätten FCC formed and coarsened via superledge mechanism. Further, thermal exposure resulted in lamellar instability and localized globularization of the B2 phase. The heat-treated alloy displayed excellent resistance to thermal softening when compared to the cast alloy. Further, the thermally exposed alloy exhibited a superior work hardening rate. DOI 10.1016/j.jallcom.2022.164105 Indigenous content off Field of Research 0204 Condensed Matter Physics 0912 Materials Engineering 0914 Resources Engineering and Extractive Metallurgy Persistent URL http://hdl.handle.net/10536/DRO/DU:30162894 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges   Connect to Elements publication management system Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 18 Feb 2022, 07:15:46 EST Fri, 18 Feb 2022, 16:00:35 EST Fri, 13 May 2022, 06:04:27 EST Fri, 08 Jul 2022, 08:10:41 EST Fri, 08 Jul 2022, 12:12:37 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 1 times in Scopus Search Google Scholar Access Statistics: 17 Abstract Views  -  Detailed Statistics Created: Fri, 18 Feb 2022, 07:15:46 EST