Phase Stability of AlCoTiZn High-Entropy Alloy Prepared by Mechanical Alloying

Yebaji, Sushil and Saurav, Ayush and Chauhan, Pranjal and Murty, B S and et al, . (2022) Phase Stability of AlCoTiZn High-Entropy Alloy Prepared by Mechanical Alloying. Journal of Materials Engineering and Performance. ISSN 1059-9495

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Abstract

In this work, synthesis and phase stability of a novel dual-phase (HCP-BCC) AlCoTiZn high-entropy alloy are presented. Microstructural evolution and thermal stability of the alloy powder were studied up to their melting point. X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, atomic emission spectrophotometry analysis and hardness measurements were used for the characterization of the HEA. As-milled and the bulk samples consist of an HCP and Co-rich BCC dual phases. The samples heat-treated at intermediate temperatures show HCP and Co-rich two FCC phases. Thermal stability studies reveal that vaporization of Zn occurs at around 800 degrees C. An extraordinary hardness of 1005 +/- 50 HV was observed in the bulk sample. This is mainly attributed to the presence of dual-phase HCP-BCC structures.

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IITH Creators:

IITH Creators	ORCiD
Murty, B S	https://orcid.org/0000-0002-4399-8531

Item Type:

Article

Additional Information:

This work is funded by the Science & Engineering Research Board, Department of Science & Technology (DST), India (No: EEQ/2017/000724). The authors are grateful to Dr. Suhash Ranjan Dey, Dr. Karre Rajamallu, Dr. Rahul Mane, Mr. Rameez Tamboli and Mr. Pritam Chakraborty for providing us support for DSC analysis in Materials Science and Metallurgical Engineering Department (IIT-Hyderabad) and support.

Uncontrolled Keywords:

MICROSTRUCTURE,MULTICOMPONENT,CONSOLIDATION

Subjects:

Others > Metallurgy
Materials Engineering > Materials engineering

Divisions:

Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

23 Sep 2022 06:42

Last Modified:

23 Sep 2022 06:42