Microstructure, hardness, oxidation, and corrosion behavior of TiNbTaVW refractory high entropy alloy in 3.5 wt% NaCl and 1 M H2SO4

Bamisaye, Olufemi Sylvester; Maledi, Nthabiseng; Van der Merwe, Josias; Bodunrin, Michael Oluwatosin

doi:10.1016/j.jallcom.2024.173803

Journal of Alloys and Compounds

2024

DOI: 10.1016/j.jallcom.2024.173803

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Microstructure, hardness, oxidation, and corrosion behavior of TiNbTaVW refractory high entropy alloy in 3.5 wt% NaCl and 1 M H2SO4

Olufemi Sylvester Bamisaye,

Nthabiseng Maledi,

Josias Van der Merwe

et al.

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2024

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Cited by 3 publications

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Flow Behavior and Microstructure of Hot‐Worked TiNbTaVW Refractory High‐Entropy Alloy

Bamisaye,

Maledi,

Merwe

et al. 2024

Adv Eng Mater

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The high‐temperature deformation behavior of an equiatomic TiNbTaVW refractory high entropy alloy (RHEA) was studied at temperatures of 950, 1000, and 1050 °C and a strain rate of 10−3 s−1. The flow stress, high‐temperature strength, and softening mechanisms were analyzed and compared with the IN718 nickel‐based superalloy. The results indicate that the flow stress of both TiNbTaVW and IN718 is sensitive to deformation temperature, with high temperatures resulting in reduced flow stress. Globular grains and elongated grains were observed at 950 and 1000 °C for TiNbTaVW, signifying both dynamic recovery and dynamic globularization as the softening mechanisms. Globular grains were only observed at 1050 °C for TiNbTaVW, signifying dynamic globularization as the softening mechanism. The TiNbTaVW RHEA has a higher temperature strength of 910, 870, and 658 MPa compared to the IN718 alloy with 72, 87, and 61 MPa at 950–1000 °C/10−3 s−1. By demonstrating comparable or superior performance in specific aspects, RHEAs can be considered in the near future for potential applications traditionally dominated by nickel‐based superalloys.

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Flow Behavior and Microstructure of Hot‐Worked TiNbTaVW Refractory High‐Entropy Alloy

Bamisaye,

Maledi,

Merwe

et al. 2024

Adv Eng Mater

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Microstructure, hardness, oxidation and corrosion behavior of Cr(VNb)2 Laves containing CrNbTaVW RHEA in 3.5 wt% NaCl and 1 M H2SO4

Bamisaye,

Maledi,

Van der Merwe

et al. 2024

International Journal of Refractory Metals and Hard Materials

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Phase evolution, mechanical properties, and corrosion resistance of Ti2NbVAl0.3Zrx lightweight refractory high-entropy alloys

Zhu,

Li,

Dilixiati

2024

Intermetallics

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Microstructure, hardness, oxidation, and corrosion behavior of TiNbTaVW refractory high entropy alloy in 3.5 wt% NaCl and 1 M H2SO4

Cited by 3 publications

References 100 publications

Flow Behavior and Microstructure of Hot‐Worked TiNbTaVW Refractory High‐Entropy Alloy

Flow Behavior and Microstructure of Hot‐Worked TiNbTaVW Refractory High‐Entropy Alloy

Microstructure, hardness, oxidation and corrosion behavior of Cr(VNb)2 Laves containing CrNbTaVW RHEA in 3.5 wt% NaCl and 1 M H2SO4

Phase evolution, mechanical properties, and corrosion resistance of Ti2NbVAl0.3Zrx lightweight refractory high-entropy alloys

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Microstructure, hardness, oxidation, and corrosion behavior of TiNbTaVW refractory high entropy alloy in 3.5 wt% NaCl and 1 M H2SO4

Cited by 3 publications

References 100 publications

Flow Behavior and Microstructure of Hot‐Worked TiNbTaVW Refractory High‐Entropy Alloy

Flow Behavior and Microstructure of Hot‐Worked TiNbTaVW Refractory High‐Entropy Alloy

Microstructure, hardness, oxidation and corrosion behavior of Cr(VNb)2 Laves containing CrNbTaVW RHEA in 3.5 wt% NaCl and 1 M H2SO4

Phase evolution, mechanical properties, and corrosion resistance of Ti2NbVAl0.3Zrx lightweight refractory high-entropy alloys

Contact Info

Product

Resources

About

Microstructure, hardness, oxidation, and corrosion behavior of TiNbTaVW refractory high entropy alloy in 3.5 wt% NaCl and 1 M H2SO4

Microstructure, hardness, oxidation and corrosion behavior of Cr(VNb)2 Laves containing CrNbTaVW RHEA in 3.5 wt% NaCl and 1 M H2SO4