Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system
As structural and functional materials, topologically close-packed (TCP) phases of transition metal compounds offer a wide range of attractive properties. Due to their complex crystal structure and resulting brittleness, the knowledge on their mechanical behaviour is still very limited. In this stud...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000450 |
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| author | C. Gasper E.M. Soysal N. Ulumuddin T. Stollenwerk T. Reclik P.L. Sun S. Korte-Kerzel |
| author_facet | C. Gasper E.M. Soysal N. Ulumuddin T. Stollenwerk T. Reclik P.L. Sun S. Korte-Kerzel |
| author_sort | C. Gasper |
| collection | DOAJ |
| description | As structural and functional materials, topologically close-packed (TCP) phases of transition metal compounds offer a wide range of attractive properties. Due to their complex crystal structure and resulting brittleness, the knowledge on their mechanical behaviour is still very limited. In this study, we systematically analyse the influence of composition and crystal structure on the mechanical properties and deformation mechanisms in the binary Ta-Fe system as well as in the ternary Ta-Fe-Al system, both containing a hexagonal C14 Laves and µ-phase. We use nanoindentation, slip trace analysis and transmission electron microscopy to study the influence of crystal structure, composition and crystal orientation. The composition strongly influences the indentation modulus in the binary Ta-Fe system, showing a decreasing trend with increasing Ta content. The addition of Al, however, does not lead to a significant change of the mechanical properties of the ternary TCP phases. The investigation of the deformation mechanisms revealed that the Laves phase primarily deforms via non-basal slip, while the basal plane is the favoured slip plane in the µ-phase. By partly replacing Fe with Al, the plasticity is not affected strongly, but the proportion of non-basal slip slightly increases for both ternary TCP phases compared to the binary ones. |
| format | Article |
| id | doaj-art-74d7d9b3072f408799db076f6917c390 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-74d7d9b3072f408799db076f6917c3902025-02-04T04:10:17ZengElsevierMaterials & Design0264-12752025-03-01251113625Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) systemC. Gasper0E.M. Soysal1N. Ulumuddin2T. Stollenwerk3T. Reclik4P.L. Sun5S. Korte-Kerzel6Corresponding author.; Institute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Physical Metallurgy and Materials Physics, RWTH Aachen University, 52074 Aachen, GermanyAs structural and functional materials, topologically close-packed (TCP) phases of transition metal compounds offer a wide range of attractive properties. Due to their complex crystal structure and resulting brittleness, the knowledge on their mechanical behaviour is still very limited. In this study, we systematically analyse the influence of composition and crystal structure on the mechanical properties and deformation mechanisms in the binary Ta-Fe system as well as in the ternary Ta-Fe-Al system, both containing a hexagonal C14 Laves and µ-phase. We use nanoindentation, slip trace analysis and transmission electron microscopy to study the influence of crystal structure, composition and crystal orientation. The composition strongly influences the indentation modulus in the binary Ta-Fe system, showing a decreasing trend with increasing Ta content. The addition of Al, however, does not lead to a significant change of the mechanical properties of the ternary TCP phases. The investigation of the deformation mechanisms revealed that the Laves phase primarily deforms via non-basal slip, while the basal plane is the favoured slip plane in the µ-phase. By partly replacing Fe with Al, the plasticity is not affected strongly, but the proportion of non-basal slip slightly increases for both ternary TCP phases compared to the binary ones.http://www.sciencedirect.com/science/article/pii/S0264127525000450Ta-Fe(-Al) systemIntermetallicsTCP phasesNanomechanical testingMechanical propertiesDeformation mechanisms |
| spellingShingle | C. Gasper E.M. Soysal N. Ulumuddin T. Stollenwerk T. Reclik P.L. Sun S. Korte-Kerzel Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system Materials & Design Ta-Fe(-Al) system Intermetallics TCP phases Nanomechanical testing Mechanical properties Deformation mechanisms |
| title | Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system |
| title_full | Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system |
| title_fullStr | Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system |
| title_full_unstemmed | Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system |
| title_short | Mechanical properties and deformation mechanisms of the C14 Laves and µ-phase in the ternary Ta-Fe(-Al) system |
| title_sort | mechanical properties and deformation mechanisms of the c14 laves and µ phase in the ternary ta fe al system |
| topic | Ta-Fe(-Al) system Intermetallics TCP phases Nanomechanical testing Mechanical properties Deformation mechanisms |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000450 |
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