Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers
High-temperature micro-fracture tests of a industrial grade W–1%Ta alloy were performed from room temperature up to 700 °C, using chevron-notched micro-cantilevers. A gradual increase of conditional fracture toughness (KQc) was measured with increasing temperature, and a microscale brittle-to-ductil...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2020
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| _version_ | 1826258107520516096 |
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| author | Li, B-S Marrow, TJ Armstrong, DEJ |
| author_facet | Li, B-S Marrow, TJ Armstrong, DEJ |
| author_sort | Li, B-S |
| collection | OXFORD |
| description | High-temperature micro-fracture tests of a industrial grade W–1%Ta alloy were performed from room temperature up to 700 °C, using chevron-notched micro-cantilevers. A gradual increase of conditional fracture toughness (KQc) was measured with increasing temperature, and a microscale brittle-to-ductile transition temperature (BDTT) was found at ~600 °C. This is slightly higher than macroscopic three-point bending tests from the same material (~400 °C), and contradicts most literatures for pure tungsten that shows a significant lower micro-BDTT. The results suggested that the BDTT is independent of the specimen size, and the higher micro-BDTT is due to the tantalum in this alloy. |
| first_indexed | 2024-03-06T18:28:48Z |
| format | Journal article |
| id | oxford-uuid:08e92a3f-6bf0-414c-888c-522e9b30a295 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:28:48Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:08e92a3f-6bf0-414c-888c-522e9b30a2952022-03-26T09:15:29ZMeasuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantileversJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:08e92a3f-6bf0-414c-888c-522e9b30a295EnglishSymplectic ElementsElsevier2020Li, B-SMarrow, TJArmstrong, DEJHigh-temperature micro-fracture tests of a industrial grade W–1%Ta alloy were performed from room temperature up to 700 °C, using chevron-notched micro-cantilevers. A gradual increase of conditional fracture toughness (KQc) was measured with increasing temperature, and a microscale brittle-to-ductile transition temperature (BDTT) was found at ~600 °C. This is slightly higher than macroscopic three-point bending tests from the same material (~400 °C), and contradicts most literatures for pure tungsten that shows a significant lower micro-BDTT. The results suggested that the BDTT is independent of the specimen size, and the higher micro-BDTT is due to the tantalum in this alloy. |
| spellingShingle | Li, B-S Marrow, TJ Armstrong, DEJ Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers |
| title | Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers |
| title_full | Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers |
| title_fullStr | Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers |
| title_full_unstemmed | Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers |
| title_short | Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers |
| title_sort | measuring the brittle to ductile transition temperature of tungsten tantalum alloy using chevron notched micro cantilevers |
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