Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten
Polycrystalline tungsten is a promising candidate for future fusion applications as plasma facing material due to its good thermophysical properties at high temperatures. Fracture mechanical properties of sintered and rolled, commercially available polycrystalline tungsten are characterized taking i...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-12-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179117302053 |
| _version_ | 1818948010327932928 |
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| author | M. Conte J. Aktaa |
| author_facet | M. Conte J. Aktaa |
| author_sort | M. Conte |
| collection | DOAJ |
| description | Polycrystalline tungsten is a promising candidate for future fusion applications as plasma facing material due to its good thermophysical properties at high temperatures. Fracture mechanical properties of sintered and rolled, commercially available polycrystalline tungsten are characterized taking into account the strong anisotropy due to different grain shape and orientation with respect to the rolling direction. The fracture mechanics investigations are accompanied by fractographic analyses of two tungsten plate grades with varying cold working ratios of two different manufacturers (PLANSEE SE, Austria and A.L.M.T Corp., Japan). In this respect three point bending tests (3-PB) with sub sized fracture mechanical specimens in different orientations of the anisotropic microstructure are performed at three temperatures, ranging from 25 °C to 400 °C at a deflection rate of 2 µm s − 1. In addition, crack initiation and crack growth mechanisms depending on texture and cold working ratio are investigated by means of scanning electron microscopy (SEM). Key words: Fracture toughness, Polycrystalline tungsten, Orientations dependency, Crack path analysis |
| first_indexed | 2024-12-20T08:40:00Z |
| format | Article |
| id | doaj.art-d3525a8995fb41eda25c3401904c416c |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-20T08:40:00Z |
| publishDate | 2019-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-d3525a8995fb41eda25c3401904c416c2022-12-21T19:46:25ZengElsevierNuclear Materials and Energy2352-17912019-12-0121Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungstenM. Conte0J. Aktaa1Corresponding author.; Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WBM), 76344 Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WBM), 76344 Eggenstein-Leopoldshafen, GermanyPolycrystalline tungsten is a promising candidate for future fusion applications as plasma facing material due to its good thermophysical properties at high temperatures. Fracture mechanical properties of sintered and rolled, commercially available polycrystalline tungsten are characterized taking into account the strong anisotropy due to different grain shape and orientation with respect to the rolling direction. The fracture mechanics investigations are accompanied by fractographic analyses of two tungsten plate grades with varying cold working ratios of two different manufacturers (PLANSEE SE, Austria and A.L.M.T Corp., Japan). In this respect three point bending tests (3-PB) with sub sized fracture mechanical specimens in different orientations of the anisotropic microstructure are performed at three temperatures, ranging from 25 °C to 400 °C at a deflection rate of 2 µm s − 1. In addition, crack initiation and crack growth mechanisms depending on texture and cold working ratio are investigated by means of scanning electron microscopy (SEM). Key words: Fracture toughness, Polycrystalline tungsten, Orientations dependency, Crack path analysishttp://www.sciencedirect.com/science/article/pii/S2352179117302053 |
| spellingShingle | M. Conte J. Aktaa Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten Nuclear Materials and Energy |
| title | Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten |
| title_full | Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten |
| title_fullStr | Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten |
| title_full_unstemmed | Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten |
| title_short | Manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten |
| title_sort | manufacturing influences on microstructure and fracture mechanical properties of polycrystalline tungsten |
| url | http://www.sciencedirect.com/science/article/pii/S2352179117302053 |
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