Enhanced ductility in hot compression tests by tailoring microstructure in the refractory high-entropy alloys MoNbTaTiV Zr

Duan, Chuyi; Li, Xiaohu; Werner, Ewald

doi:10.1016/j.ijrmhm.2023.106292

International Journal of Refractory Metals and Hard Materials

2023

DOI: 10.1016/j.ijrmhm.2023.106292

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Enhanced ductility in hot compression tests by tailoring microstructure in the refractory high-entropy alloys MoNbTaTiV Zr

Chuyi Duan

Xiaohu Li

Ewald Werner

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Cited by 7 publications

References 40 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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Mechanically alloyed and spark plasma sintered WNbMoVTa refractory high entropy alloys: Effects of Cr and Al on the microstructural and mechanical properties

Boztemur

Bayrak

Gökçe

et al. 2023

Journal of Alloys and Compounds

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Phase stability and transition of CrTaVW high-entropy alloy

Fu,

Li,

Hou

et al. 2024

Journal of Alloys and Compounds

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Enhanced ductility in hot compression tests by tailoring microstructure in the refractory high-entropy alloys MoNbTaTiV Zr

Cited by 7 publications

References 40 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

Mechanically alloyed and spark plasma sintered WNbMoVTa refractory high entropy alloys: Effects of Cr and Al on the microstructural and mechanical properties

Phase stability and transition of CrTaVW high-entropy alloy

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