Microstructure and high-temperature deformation behavior of FeCoNiMnV high entropy alloy

Lightweight, strong, and radiation-tolerant materials are essential for advanced nuclear systems and aerospace applications. However, the current research for these materials mainly focuses on a single design strategy to improve their irradiation resistance via empirical trial-and-error learning. In this study, a novel NbVTaSi refractory eutectic high-entropy alloy was target designed via high-throughput thermodynamic calculations. To exploit the unique eutectic structures of NbVTa and β-Nb5Si3 phases, a new synergistic mechanism for irradiation resistance via balancing inhibition effects on the generation of He-induced lattice defects and the formation and growth of He bubbles was proposed according to the experimental findings and density functional theory calculations. The alloy possesses lightweight (7.4 g/cm3), high yield strengths at room temperature (2.60 GPa) and 850 ℃ (1.84 GPa), and outstanding He-irradiation resistance, superior to other reported radiation-resistant alloys. This study sheds light on the development of future radiation-tolerant materials for advanced nuclear systems and aerospace applications.

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“…The EBSD phasedistribution mappings in Fig. 3(i [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] which could be used at 850 ℃.…”

Section: Microstructure and Mechanical Properties Of The Nb55v25ta5si...mentioning

confidence: 99%

High-throughput Design of a Lightweight and Ultra-strong Refractory Eutectic High-Entropy Alloy with Outstanding Irradiation Resistance

Liaw

Yang

Wang

et al. 2023

Preprint

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Effect of Microstructure, Strain Rate, and Elevated Temperature on the Compression Property of Fe–Co–Ni–Cr–Zr Alloy

Zhang

Zhai

Wang

2022

Metall Mater Trans A

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Processing and Characterization of a Mechanically Alloyed and Hot Press Sintered High Entropy Alloy from the Al-Cr-Fe-Mn-Mo Family

Stasiak

Sow

Addad

et al. 2022

JOM

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Microstructure and high-temperature deformation behavior of FeCoNiMnV high entropy alloy

Cited by 11 publications

References 48 publications

High-throughput Design of a Lightweight and Ultra-strong Refractory Eutectic High-Entropy Alloy with Outstanding Irradiation Resistance

High-throughput Design of a Lightweight and Ultra-strong Refractory Eutectic High-Entropy Alloy with Outstanding Irradiation Resistance

Effect of Microstructure, Strain Rate, and Elevated Temperature on the Compression Property of Fe–Co–Ni–Cr–Zr Alloy

Processing and Characterization of a Mechanically Alloyed and Hot Press Sintered High Entropy Alloy from the Al-Cr-Fe-Mn-Mo Family

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