Effect of minute element addition on the oxidation resistance of FeCoCrNiAl and FeCoCrNi2Al high entropy alloy

Jadhav, Mahesh and Singh, Sheela and Panigrahi, Bharat Bhooshan and et al, . (2022) Effect of minute element addition on the oxidation resistance of FeCoCrNiAl and FeCoCrNi2Al high entropy alloy. Advanced Powder Technology, 33 (2). pp. 1-13. ISSN 0921-8831

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The effect of Ti0.1 and Ti0.1Si0.1 addition on the high temperature isothermal oxidation behavior of dense FeCoCrNiAl and FeCoCrNi2Al high entropy alloy (HEA) consolidated by vacuum hot pressing were investigated by X-ray diffraction, Scanning Electron Microscopy and Raman Spectroscopy. Mechanical properties such as hardness, Young's modulus, and thermal properties such as differential scanning calorimetry (DSC) and coefficient of thermal expansion (CTE) were also investigated. The weight gain recorded after isothermal oxidation for 5,25,50 and 100 h at 1050 °C was found to be parabolic in nature. X-ray diffraction analysis (XRD), as well as Raman spectroscopy analysis of HEA's oxidized at 1050 °C for 100 h, shows the formation of the Al2O3 phase. A homogeneous thin oxide scale without any discontinuity was observed throughout the cross-section. Ti and Si addition in 0.1 at. % improves mechanical properties, oxidation resistance, and reduces waviness of the oxide scale. © 2021 The Society of Powder Technology Japan

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IITH Creators:
IITH CreatorsORCiD
Panigrahi, Bharat BhooshanUNSPECIFIED
Item Type: Article
Additional Information: The authors would like to thank DST-SERB (EMR/2016/001066), New Delhi, India for providing financial support. The authors are thankful to the Director, CSIR-NAL and Head, SED for supporting with characterization facility. The authors would like to express their gratitude to Mr. Siju and Mr. Praveen Kumar for their assistance rendered during the characterization of the samples.
Uncontrolled Keywords: Al2O3 oxide; Bond coat; High entropy alloys; Oxidation resistance; Thermal expansion
Subjects: Physics > Mechanical and aerospace
Others > Nanotechnology
Others > Metallurgy Metallurgical Engineering
Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Department of Mechanical & Aerospace Engineering
Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 13 Jul 2022 11:56
Last Modified: 13 Jul 2022 11:56
URI: http://raiith.iith.ac.in/id/eprint/9679
Publisher URL: http://doi.org/10.1016/j.apt.2021.103410
OA policy: https://v2.sherpa.ac.uk/id/publication/28655
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