Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters
Optimizing elemental proportions is a potential pathway to enhance strength-ductility synergy of non-equimolar high entropy alloys (HEAs). This study designed a series of BCC-structured TiVNbMoCr alloys with different elemental proportions, and investigated the evolution of tensile properties. The e...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542402581X |
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| author | Zaidong Xu Baolin Wu Shihui Jiang Naifu Zou Yandong Liu Claude Esling Marie-Jeanne Philippe |
| author_facet | Zaidong Xu Baolin Wu Shihui Jiang Naifu Zou Yandong Liu Claude Esling Marie-Jeanne Philippe |
| author_sort | Zaidong Xu |
| collection | DOAJ |
| description | Optimizing elemental proportions is a potential pathway to enhance strength-ductility synergy of non-equimolar high entropy alloys (HEAs). This study designed a series of BCC-structured TiVNbMoCr alloys with different elemental proportions, and investigated the evolution of tensile properties. The effect of the independent parameters on tensile properties was systematically analyzed based on the experimental results. The independent parameters influencing the tensile properties were summarized as valence electron concentration (VEC), atomic radius mismatch δ, Burgers vector magnitude b (or lattice constant a), grain size d and geometric compatibility factor between grains m′. In comparison, VEC and δ play greater roles than b and d in strengthening the alloys. The tensile elongation of the alloys increases with decrease of a and VEC, and increase of m′ and d. With decreasing a, both yield strength and ductility could synergistically increase, which is significant for enhancing the strength-ductility synergy of TiVNbMoCr HEAs. The alloy with VEC of 4.69, δ of 4.526, b of 2.77 Å and d of 57 μm possesses the yield strength as high as 1303 MPa with an elongation of ∼6%. |
| format | Article |
| id | doaj-art-719f1553622e4af6a279ca251e38c47c |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-719f1553622e4af6a279ca251e38c47c2024-12-26T08:55:23ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013379147930Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parametersZaidong Xu0Baolin Wu1Shihui Jiang2Naifu Zou3Yandong Liu4Claude Esling5Marie-Jeanne Philippe6Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, 110819, Shenyang, ChinaSchool of Materials Science and Engineering, Shenyang Aerospace University, 110136, Shenyang, China; Corresponding author. School of Materials Science and Engineering, Shenyang Aerospace University, South Avenue of Daoyi, 110136, Shenyang, China.School of Materials Science and Engineering, Shenyang Aerospace University, 110136, Shenyang, ChinaSchool of Materials Science and Engineering, Shenyang Aerospace University, 110136, Shenyang, ChinaKey Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, 110819, Shenyang, ChinaLEM3 UMR CNRS 7239, Université de Lorraine, 57045, Metz, FranceLEM3 UMR CNRS 7239, Université de Lorraine, 57045, Metz, FranceOptimizing elemental proportions is a potential pathway to enhance strength-ductility synergy of non-equimolar high entropy alloys (HEAs). This study designed a series of BCC-structured TiVNbMoCr alloys with different elemental proportions, and investigated the evolution of tensile properties. The effect of the independent parameters on tensile properties was systematically analyzed based on the experimental results. The independent parameters influencing the tensile properties were summarized as valence electron concentration (VEC), atomic radius mismatch δ, Burgers vector magnitude b (or lattice constant a), grain size d and geometric compatibility factor between grains m′. In comparison, VEC and δ play greater roles than b and d in strengthening the alloys. The tensile elongation of the alloys increases with decrease of a and VEC, and increase of m′ and d. With decreasing a, both yield strength and ductility could synergistically increase, which is significant for enhancing the strength-ductility synergy of TiVNbMoCr HEAs. The alloy with VEC of 4.69, δ of 4.526, b of 2.77 Å and d of 57 μm possesses the yield strength as high as 1303 MPa with an elongation of ∼6%.http://www.sciencedirect.com/science/article/pii/S223878542402581XMaximum entropyPhysical parametersTensile propertiesThe grey system modelVEC |
| spellingShingle | Zaidong Xu Baolin Wu Shihui Jiang Naifu Zou Yandong Liu Claude Esling Marie-Jeanne Philippe Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters Journal of Materials Research and Technology Maximum entropy Physical parameters Tensile properties The grey system model VEC |
| title | Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters |
| title_full | Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters |
| title_fullStr | Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters |
| title_full_unstemmed | Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters |
| title_short | Systematic analysis of tensile properties of the TiVNbMoCr high entropy alloys in terms of the physical parameters |
| title_sort | systematic analysis of tensile properties of the tivnbmocr high entropy alloys in terms of the physical parameters |
| topic | Maximum entropy Physical parameters Tensile properties The grey system model VEC |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402581X |
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