Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys
Nowadays refractory high-entropy alloys (RHEAs) are regarded as great candidates for the replacement of superalloys at high temperature. To design a RHEA, one must understand the pros and cons of every refractory element. However, the elemental effect on mechanical properties remains unclear. In thi...
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MDPI AG
2018-12-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/21/1/15 |
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| author | Ko-Kai Tseng Chien-Chang Juan Shuen Tso Hsuan-Chu Chen Che-Wei Tsai Jien-Wei Yeh |
| author_facet | Ko-Kai Tseng Chien-Chang Juan Shuen Tso Hsuan-Chu Chen Che-Wei Tsai Jien-Wei Yeh |
| author_sort | Ko-Kai Tseng |
| collection | DOAJ |
| description | Nowadays refractory high-entropy alloys (RHEAs) are regarded as great candidates for the replacement of superalloys at high temperature. To design a RHEA, one must understand the pros and cons of every refractory element. However, the elemental effect on mechanical properties remains unclear. In this study, the subtraction method was applied on equiatomic HfMoNbTaTiZr alloys to discover the role of each element, and, thus, HfMoNbTaTiZr, HfNbTaTiZr, HfMoTaTiZr, HfMoNbTiZr, HfMoNbTaZr, and HfMoNbTaTi were fabricated and analyzed. The microstructure and mechanical properties of each alloy at the as-cast state were examined. The solid solution phase formation rule and the solution strengthening effect are also discussed. Finally, the mechanism of how Mo, Nb, Ta, Ti, and Zr affect the HfMoNbTaTiZr alloys was established after comparing the properties of these alloys. |
| first_indexed | 2024-04-11T20:56:37Z |
| format | Article |
| id | doaj.art-828f808577b44fa8a74224f3a4cec8e9 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T20:56:37Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-828f808577b44fa8a74224f3a4cec8e92022-12-22T04:03:39ZengMDPI AGEntropy1099-43002018-12-012111510.3390/e21010015e21010015Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr AlloysKo-Kai Tseng0Chien-Chang Juan1Shuen Tso2Hsuan-Chu Chen3Che-Wei Tsai4Jien-Wei Yeh5Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, TaiwanDepartment of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, TaiwanHigh Entropy Materials Center, National Tsing Hua University, Hsinchu 30013, TaiwanHigh Entropy Materials Center, National Tsing Hua University, Hsinchu 30013, TaiwanDepartment of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, TaiwanDepartment of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, TaiwanNowadays refractory high-entropy alloys (RHEAs) are regarded as great candidates for the replacement of superalloys at high temperature. To design a RHEA, one must understand the pros and cons of every refractory element. However, the elemental effect on mechanical properties remains unclear. In this study, the subtraction method was applied on equiatomic HfMoNbTaTiZr alloys to discover the role of each element, and, thus, HfMoNbTaTiZr, HfNbTaTiZr, HfMoTaTiZr, HfMoNbTiZr, HfMoNbTaZr, and HfMoNbTaTi were fabricated and analyzed. The microstructure and mechanical properties of each alloy at the as-cast state were examined. The solid solution phase formation rule and the solution strengthening effect are also discussed. Finally, the mechanism of how Mo, Nb, Ta, Ti, and Zr affect the HfMoNbTaTiZr alloys was established after comparing the properties of these alloys.http://www.mdpi.com/1099-4300/21/1/15high-entropy alloysrefractory high-entropy alloysalloys designelevated-temperature yield strengthsolid solution strengthening effect |
| spellingShingle | Ko-Kai Tseng Chien-Chang Juan Shuen Tso Hsuan-Chu Chen Che-Wei Tsai Jien-Wei Yeh Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys Entropy high-entropy alloys refractory high-entropy alloys alloys design elevated-temperature yield strength solid solution strengthening effect |
| title | Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys |
| title_full | Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys |
| title_fullStr | Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys |
| title_full_unstemmed | Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys |
| title_short | Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys |
| title_sort | effects of mo nb ta ti and zr on mechanical properties of equiatomic hf mo nb ta ti zr alloys |
| topic | high-entropy alloys refractory high-entropy alloys alloys design elevated-temperature yield strength solid solution strengthening effect |
| url | http://www.mdpi.com/1099-4300/21/1/15 |
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