Isothermal and non-isothermal sintering characteristics of mechanically alloyed nonequiatomic Fe2CoCrMnNi high-entropy alloy powder

Sahane, Disna and Singh, Sheela and Jadhav, Mahesh and Panigrahi, Bharat B. (2021) Isothermal and non-isothermal sintering characteristics of mechanically alloyed nonequiatomic Fe2CoCrMnNi high-entropy alloy powder. Powder Metallurgy, 64 (1). pp. 64-74. ISSN 0032-5899

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Abstract

Mechanically alloyed high-entropy alloy (HEA) has taken considerable attention due to its ease of fabrication. Recent trend progresses towards the development of non-equiatomic HEAs to enhance the material properties compared to equiatomic alloys. Sintering behaviour of widely investigated equiatomic FeCoCrMnNi HEA has been reported. However, no report exists on the sintering kinetics of non-equiatomic HEA, when the concentration of a particular element is increased in the alloy powder. The present work attempts to study the isothermal and non-isothermal sintering behaviour of mechanically alloyed non-equiatomic Fe2CoCrMnNi HEA over a temperature range of 950–1100°C in an argon atmosphere. Activation energies for sintering and diffusivity parameters of Fe2CoCrMnNi HEA were calculated from dilatometric measurements through the sintering models. The result indicates the grain boundary diffusion as a dominating sintering mechanism for this alloy powder.

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IITH Creators:

IITH Creators	ORCiD
Panigrahi, Bharat Bhooshan	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Argon atmospheres; Dilatometric measurements; Grain-boundary diffusion; Mechanically alloyed; Non-isothermal sintering; Sintering kinetics; Sintering mechanism; Temperature range;Activation energy; Chromium alloys; Cobalt alloys; Entropy; Grain boundaries; High-entropy alloys; Iron alloys; Isotherms; Manganese alloys

Subjects:

Others > Metallurgy Metallurgical Engineering
Materials Engineering > Materials engineering

Divisions:

Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

27 Jul 2021 05:02

Last Modified:

04 Mar 2022 04:44

URI:

http://raiithold.iith.ac.in/id/eprint/8537