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

Text
Advanced_Powder_Technology.pdf - Published Version
Restricted to Registered users only
Download (7MB) | Request a copy

Abstract

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

[error in script]

IITH Creators:

IITH Creators	ORCiD
Panigrahi, Bharat Bhooshan	UNSPECIFIED

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
Physics
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