About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Advances in Multi-Principal Element Alloys III: Mechanical Behavior
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Presentation Title |
Mechanical Properties of Re Modulated Refractory NbMoTaW High-entropy Alloy Thin Films |
Author(s) |
Cheng-Hsien Yeh, Chuan-Feng Shih, Bernad-Haochih Liu, Wen-Dung Hsu, Chan-Shan Yang, Cheng-Hsing Hsu, Hsuan-Ta Wu |
On-Site Speaker (Planned) |
Cheng-Hsien Yeh |
Abstract Scope |
In this study, the addition of rhenium(Re) to the NbMoTaW to form the MoNbTaWRe high-entropy alloy thin films is investigated. It is found that the solid solution structure of NbMoTaWRe sustains, and the mechanical properties of the thin film are enhanced. The incorporation of Re effectively strengthens the solid solution structure, resulting in a 17.4% increase in hardness and a 20.1% increase in elastic modulus compared to the NbMoTaW thin film. The research also extensively analyzes the mixed effects on the microstructure, crystal structure, composition, hardness, elastic modulus, and wear resistance of the thin film. By further optimizing the composition through fine-tuning, the NbMoTaWRe thin film can achieve an additional increase of 59.2% in hardness and 67.3% in elastic modulus. Comparing wear resistance through nano-scratch measurements. The NbMoTaWRe thin film also exhibits improved wear resistance compared to NbMoTaW, and it demonstrates superior wear resistance compared to commonly used industrial materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, High-Entropy Alloys, Mechanical Properties |