Microstructure and mechanical properties of wrought Al0.2CoCrFeNiMo0.5 high entropy alloy using gas tungsten arc welding process

Palguna, Y. and Rajesh Kannan, A. and Korla, Rajesh (2022) Microstructure and mechanical properties of wrought Al0.2CoCrFeNiMo0.5 high entropy alloy using gas tungsten arc welding process. Materials Letters, 317 (132109). pp. 1-4. ISSN 0167-577X

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Abstract

In the present study, wrought processed Al0.2CoCrFeNiMo0.5 high entropy alloy (HEA) was welded using gas tungsten arc welding (GTAW) to determine its potential as a structural material. The microstructural changes during welding were analyzed and correlated with the mechanical properties. The welded HEA specimen has shown similar microstructural constituents, a typical FCC matrix with BCT secondary phase (sigma). The microstructure changed from irregular and heterogeneous secondary phase in base metal (BM), to eutectic broken lamellae of sigma phase in FCC matrix at heat affected zone (HAZ) and as-cast structure (dendritic and interdendritic regions) of sigma phase in FCC matrix at fusion zone (FZ). Upon tensile testing, the welded specimens fractured in the FZ with comparable tensile properties. Â© 2022 Elsevier B.V.

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IITH Creators:

IITH Creators	ORCiD
Korla, Rajesh	UNSPECIFIED

Item Type:

Article

Additional Information:

The authors gratefully acknowledge ECR-SERB (grant number ECR/ 2017/001278) for funding the project and DST (SR/FST/ETI-421/2016) for funding FE-SEM used in the present work.

Uncontrolled Keywords:

GTAW, High entropy alloy, Mechanical properties, Microstructure, Welding

Subjects:

Others > Metallurgy Metallurgical Engineering
Materials Engineering > Materials engineering

Divisions:

Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

23 Jun 2022 06:29

Last Modified:

28 Jun 2022 05:30