Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys
Refractory multi-principal element alloys (RMPEAs) are promising for high-temperature applications because of their excellent mechanical properties. Developing RMPEAs with both high strength and ductility is a key priority in materials science. Previous studies have emphasized hafnium's (Hf) cr...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542403059X |
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| author | Yingwu Wang Kai Xiong Wei Li Chengchen Jin Haijun Wu Hua Dai Zihang Yang Hongmo Yang Shunmeng Zhang |
| author_facet | Yingwu Wang Kai Xiong Wei Li Chengchen Jin Haijun Wu Hua Dai Zihang Yang Hongmo Yang Shunmeng Zhang |
| author_sort | Yingwu Wang |
| collection | DOAJ |
| description | Refractory multi-principal element alloys (RMPEAs) are promising for high-temperature applications because of their excellent mechanical properties. Developing RMPEAs with both high strength and ductility is a key priority in materials science. Previous studies have emphasized hafnium's (Hf) crucial role in enhancing the strength and maintaining ductility of RMPEAs at room temperatures. However, the strengthening mechanisms induced by Hf are not fully understood and require further investigation. To address this, a series of HfxNbTaTiV alloys with varying Hf concentration were designed and investigated by combining experiments with theoretical calculations. The alloys prepared by vacuum arc melting present body-centered cubic solid solutions, high tensile strength, and good ductility at room temperature. The addition of Hf substantially increases the alloys' tensile strength and hardness. Theoretical analyses indicate that solid solution strengthening is the primary mechanism responsible for strengthening these alloys. The increase of lattice distortion induced by Hf addition plays a key role in strengthening RMPEAs. This study not only clarifies the effects of Hf addition on the phase formation, lattice distortion, and strengthening mechanisms of HfxNbTaTiV alloys, but also offers valuable insights for designing RMPEAs with high strength and ambient ductility. |
| format | Article |
| id | doaj-art-2e57503fc16f42dd9d6efc216db51592 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-2e57503fc16f42dd9d6efc216db515922025-01-19T06:25:59ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013425272538Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloysYingwu Wang0Kai Xiong1Wei Li2Chengchen Jin3Haijun Wu4Hua Dai5Zihang Yang6Hongmo Yang7Shunmeng Zhang8Materials Genome Institute, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, China; Advanced Computing Center, School of Engineering, Yunnan University, Kunming, 650091, ChinaMaterials Genome Institute, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, China; Corresponding author.Xi'an Precision Machinery Research Institute Kunming Branch, Kunming, 650101, ChinaMaterials Genome Institute, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, ChinaKunming Institute of Precious Metals, Yunnan Precious Metals Laboratory Co., Ltd, Kunming, 650106, ChinaKunming Institute of Precious Metals, Yunnan Precious Metals Laboratory Co., Ltd, Kunming, 650106, China; Corresponding author.Materials Genome Institute, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, ChinaMaterials Genome Institute, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, ChinaMaterials Genome Institute, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, ChinaRefractory multi-principal element alloys (RMPEAs) are promising for high-temperature applications because of their excellent mechanical properties. Developing RMPEAs with both high strength and ductility is a key priority in materials science. Previous studies have emphasized hafnium's (Hf) crucial role in enhancing the strength and maintaining ductility of RMPEAs at room temperatures. However, the strengthening mechanisms induced by Hf are not fully understood and require further investigation. To address this, a series of HfxNbTaTiV alloys with varying Hf concentration were designed and investigated by combining experiments with theoretical calculations. The alloys prepared by vacuum arc melting present body-centered cubic solid solutions, high tensile strength, and good ductility at room temperature. The addition of Hf substantially increases the alloys' tensile strength and hardness. Theoretical analyses indicate that solid solution strengthening is the primary mechanism responsible for strengthening these alloys. The increase of lattice distortion induced by Hf addition plays a key role in strengthening RMPEAs. This study not only clarifies the effects of Hf addition on the phase formation, lattice distortion, and strengthening mechanisms of HfxNbTaTiV alloys, but also offers valuable insights for designing RMPEAs with high strength and ambient ductility.http://www.sciencedirect.com/science/article/pii/S223878542403059XRefractory multi-principal element alloysMechanical propertyLattice distortionSolid solution strengtheningFirst-principles |
| spellingShingle | Yingwu Wang Kai Xiong Wei Li Chengchen Jin Haijun Wu Hua Dai Zihang Yang Hongmo Yang Shunmeng Zhang Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys Journal of Materials Research and Technology Refractory multi-principal element alloys Mechanical property Lattice distortion Solid solution strengthening First-principles |
| title | Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys |
| title_full | Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys |
| title_fullStr | Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys |
| title_full_unstemmed | Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys |
| title_short | Hf-induced strengthening and lattice distortion in HfxNbTaTiV refractory multi-principal element alloys |
| title_sort | hf induced strengthening and lattice distortion in hfxnbtativ refractory multi principal element alloys |
| topic | Refractory multi-principal element alloys Mechanical property Lattice distortion Solid solution strengthening First-principles |
| url | http://www.sciencedirect.com/science/article/pii/S223878542403059X |
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