Oxidation behavior of Al15Fe20Co20Ni20Cr25-xNbx high-entropy alloys at elevated temperatures

Liu, Ning; Gao, Yannan; Chen, Chen; Zhou, Pengjie; Wang, Xiaojing; Zhang, Jing; Cao, Jing

doi:10.1016/j.vacuum.2023.112092

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…As the Nb content is increased, it was observed that the layered structure of the Laves phase became thinner and denser, effectively inhibiting the oxygen ion diffusion process in the CoCrFeNiMo 0.2 Nb 0.2 alloy through undulated Laves phase and FCC duplex‐phase structures. Similarly in a recent study, Liu et al [ 45 ] observed that Nb addition significantly enhanced the oxidation resistance of Al 15 Fe 20 Co 20 Ni 20 Cr 25− x Nb x HEAs without causing noticeable damage to their mechanical properties.…”

Section: Oxidation Of Cantor and Refractory‐based Heasmentioning

confidence: 54%

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Dehury,

Kumar,

Joshi

et al. 2024

Adv Eng Mater

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This article reviews the oxidation behaviour of the two most significant high entropy alloy systems (HEAs) namely Cantor‐based and refractory HEAs. HEAs have been extensively researched and show potential applications in various industries, including marine engine manufacturing, chemical industry, furnaces, ducting, heat exchangers, jet engines, steam turbines, nuclear reactors and electronic devices, among others. Effect of the presence of elements such as aluminium, manganese, chromium, silicon, tantalum, vanadium etc. are studied for catalysing the oxidation of HEAs. Aluminium, chromium and silicon are reportedly found to considerably impact the oxidation kinetics and enhance the oxidation resistance. However, silicon can positively or adversely affect the oxidation resistance depending on its concentration and alloy composition. Other elements like manganese tend to adversely impact the oxidation resistance of FeCoNi‐based HEAs. Refractory elements are typically found to be not suitable for oxidation studies due to the formation of non‐protective oxide layers. However, refractory HEAs offer interesting trends both in terms of enhancing or reducing oxidation resistance depending on the alloying elements. Similarly, findings related to other elements are also presented and elaborated.This article is protected by copyright. All rights reserved.

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Section: Oxidation Of Cantor and Refractory‐based Heasmentioning

confidence: 54%

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Dehury,

Kumar,

Joshi

et al. 2024

Adv Eng Mater

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Oxidation behavior of lightweight Al₂NbTi₃V₂Zr high entropy alloy at 1000°C

Tan,

Zhi,

Pei

et al. 2024

Materials & Corrosion

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Lightweight high entropy alloy (LWHEA) has great potential in aeroengine hot component applications. Anticorrosion property of LWHEA at high temperatures is one of the key determining factors. In this study, an LWHEA containing Al, Nb, Ti, V, and Zr elements with a molar ratio of 2: 1: 3: 2: 1 was designed and prepared by low energy (LE) and high energy (HE) mechanical milling followed by vacuum hot pressing. The sintered LE alloy consisted of a simple cubic matrix and α intermetallic while the BCC matrix along with α and β intermetallic phases were observed in HE alloy. The oxidation of LE and HE at 1000°C for 48 h was mainly concentrated on α and β phases, and the resultant oxides were ZrO2 and TiO2. Weight gain curve of HE sample within oxidation time of 48 h followed the parabolic law while a two‐stage parabola was found in LE bulk. The steady‐state oxidation of α precipitate was dominant within 12 h and showed a preferential oxidation mode. High temperature induced simple cubic matrix to stable BCC phase transformation and thus LE alloy with longer oxidation time and HE exhibited a similar uniform oxidation. The oxidation rate of the alloy is related to the content of α and β phases.

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Microstructure Formation and Oxidation Resistance of Laser-Cladding Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 Coating

Liu,

Zhao,

Zhou

et al. 2024

J Therm Spray Tech

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Oxidation behavior of Al15Fe20Co20Ni20Cr25-xNbx high-entropy alloys at elevated temperatures

Cited by 5 publications

References 51 publications

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Oxidation behavior of lightweight Al₂NbTi₃V₂Zr high entropy alloy at 1000°C

Microstructure Formation and Oxidation Resistance of Laser-Cladding Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 Coating

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Oxidation behavior of Al15Fe20Co20Ni20Cr25-xNbx high-entropy alloys at elevated temperatures

Cited by 5 publications

References 51 publications

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Oxidation behavior of lightweight Al2NbTi3V2Zr high entropy alloy at 1000°C

Microstructure Formation and Oxidation Resistance of Laser-Cladding Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 Coating

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Oxidation behavior of lightweight Al₂NbTi₃V₂Zr high entropy alloy at 1000°C