In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering
High temperature in situ tests of Gilsocarbon polygranular nuclear graphite have investigated the microstructure's deformation at two length scales. At the µm-scale, in situ bending tests observed by synchrotron radiation x-ray computed micro-tomography evaluated the bulk mechanical properties...
| Päätekijät: | , , , , , , |
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| Aineistotyyppi: | Conference item |
| Julkaistu: |
International Congress on Fracture
2017
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| _version_ | 1826261957838110720 |
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| author | Liu, D Gludovatz, B Barnard, H Kabra, S Marrow, J Kuball, M Ritchie, R |
| author_facet | Liu, D Gludovatz, B Barnard, H Kabra, S Marrow, J Kuball, M Ritchie, R |
| author_sort | Liu, D |
| collection | OXFORD |
| description | High temperature in situ tests of Gilsocarbon polygranular nuclear graphite have investigated the microstructure's deformation at two length scales. At the µm-scale, in situ bending tests observed by synchrotron radiation x-ray computed micro-tomography evaluated the bulk mechanical properties of flexural strength and fracture toughness and observed crack propagation at temperatures up to 1000°C; at the atomic-scale, neutron diffraction data correlated the lattice strain with bulk stress at temperatures up to 850°C. Raman scattering observations at temperatures up to 800°C showed the change of micro-scale residual strains. Gilsocarbon graphite was found to have a higher strength and fracture toughness with increased temperature. The mechanism leading to this behaviour has been attributed to the relaxation of residual strains. |
| first_indexed | 2024-03-06T19:28:45Z |
| format | Conference item |
| id | oxford-uuid:1cb7aaa9-adb1-4051-8463-7171c9818f60 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:28:45Z |
| publishDate | 2017 |
| publisher | International Congress on Fracture |
| record_format | dspace |
| spelling | oxford-uuid:1cb7aaa9-adb1-4051-8463-7171c9818f602022-03-26T11:07:02ZIn situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scatteringConference itemhttp://purl.org/coar/resource_type/c_5794uuid:1cb7aaa9-adb1-4051-8463-7171c9818f60Symplectic Elements at OxfordInternational Congress on Fracture2017Liu, DGludovatz, BBarnard, HKabra, SMarrow, JKuball, MRitchie, RHigh temperature in situ tests of Gilsocarbon polygranular nuclear graphite have investigated the microstructure's deformation at two length scales. At the µm-scale, in situ bending tests observed by synchrotron radiation x-ray computed micro-tomography evaluated the bulk mechanical properties of flexural strength and fracture toughness and observed crack propagation at temperatures up to 1000°C; at the atomic-scale, neutron diffraction data correlated the lattice strain with bulk stress at temperatures up to 850°C. Raman scattering observations at temperatures up to 800°C showed the change of micro-scale residual strains. Gilsocarbon graphite was found to have a higher strength and fracture toughness with increased temperature. The mechanism leading to this behaviour has been attributed to the relaxation of residual strains. |
| spellingShingle | Liu, D Gludovatz, B Barnard, H Kabra, S Marrow, J Kuball, M Ritchie, R In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering |
| title | In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering |
| title_full | In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering |
| title_fullStr | In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering |
| title_full_unstemmed | In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering |
| title_short | In situ mechanical testing of nuclear graphite at elevated temperatures: Synchrotron x-ray tomography, neutron diffraction and Raman scattering |
| title_sort | in situ mechanical testing of nuclear graphite at elevated temperatures synchrotron x ray tomography neutron diffraction and raman scattering |
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