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Comparative study of microstructure and mechanical properties of thermo-mechanically processed Al (0.2, 0.5) CoCrFeNiMo0.5 high-entropy alloys
Y. Palguna,
Published in Taylor and Francis Ltd.
2023
Volume: 103
   
Issue: 1
Abstract
The main objective of the present work is to produce AlxCoCrFeNiMo0.5 alloy through a wrought process. AlxCoCrFeNiMo0.5 high-entropy alloys with two different Al contents (x = 0.2 and 0.5) were prepared by vacuum arc melting followed by thermo-mechanical processing. Microstructural evolution was investigated after hot forging and subsequent homogenisation using XRD, SEM, and TEM. The final microstructure corresponding to Al0.2 and Al0.5 are BCT (sigma) in the FCC matrix and BCT (sigma) and ordered BCC together in the FCC matrix respectively. Room-temperature mechanical properties were investigated using uniaxial compression and hardness measurements. There is an apparent increase in strength and a decrease in ductility for the Al0.5 alloy. However, a higher ductility was observed in Al0.2 alloy with a compromised reduction in strength. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
About the journal
JournalPhilosophical Magazine Letters
PublisherTaylor and Francis Ltd.
ISSN09500839