Viscous flow assisted sintering of AlCoCrFeNi high entropy alloy powder

Rohila, Sahil and Mane, Rahul B and Panigrahi, Bharat Bhooshan and et al, . (2019) Viscous flow assisted sintering of AlCoCrFeNi high entropy alloy powder. Materials Letters, 256. p. 126668. ISSN 0167577X

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Abstract

Present investigation attempts to evaluate the sintering kinetics of mechanically alloyed AlCoCrFeNi high entropy alloy powder. Dilatometric study shows an accelerated densification above 1150 °C during non-isothermal sintering. The process was characterized with an activation energy of 166 ± 13 kJ/mol. Sintering was found to be controlled by the viscous flow mechanisms and atomic diffusion of constituent elements in the melt phase. This was attributed to the formation of some Cr-rich viscous phase, which had a good wettability on the solid. Results were further confirmed by an endothermic peak during differential scanning calorimetry and the solidified phases around the grains, in the quenched microstructure.

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IITH Creators:	IITH Creators ORCiD Panigrahi, Bharat Bhooshan UNSPECIFIED
Item Type:	Article
Uncontrolled Keywords:	Indexed in Scopus
Subjects:	Materials Engineering > Materials engineering
Divisions:	Department of Material Science Engineering
Depositing User:	Team Library
Date Deposited:	18 Sep 2019 06:18
Last Modified:	01 Oct 2019 05:36
URI:	http://raiithold.iith.ac.in/id/eprint/6318
Publisher URL:	http://doi.org/10.1016/j.matlet.2019.126668
Related URLs:	Google Scholar

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