Post neutron irradiation annealing and defect evolution in single crystal tungsten
Single crystal W is offered for Physics understanding of irradiation induced defects and their annealing as its structure is well defined and it is almost defect free. W(100) single crystal was neutron irradiated to a damage of 0.11 displacements per atom at 600 °C and subsequently isochronally anne...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122002381 |
| _version_ | 1811154390303637504 |
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| author | D. Papadakis K. Mergia E. Manios V. Chatzikos S. Dellis S. Messoloras |
| author_facet | D. Papadakis K. Mergia E. Manios V. Chatzikos S. Dellis S. Messoloras |
| author_sort | D. Papadakis |
| collection | DOAJ |
| description | Single crystal W is offered for Physics understanding of irradiation induced defects and their annealing as its structure is well defined and it is almost defect free. W(100) single crystal was neutron irradiated to a damage of 0.11 displacements per atom at 600 °C and subsequently isochronally annealed from 700 up to 1500 °C in 100 °C steps. Irradiation causes the formation of dislocation loops and vacancy clusters and a 45 % increase in hardness. After the annealing of 1500 °C the positron lifetime annihilation spectrum shows a defect free material and its hardness has been reverted to the pre-irradiation value and only clusters of Re, WRe and WOs2 have been detected by grazing incidence X-ray diffraction. The total line density of dislocations, number density of voids and their size versus annealing temperature have been determined. From hardness, the critical resolved stresses arising from dislocations and voids have been derived and correlated with their densities. The kinetics of defect annihilation versus annealing temperature is discussed. |
| first_indexed | 2024-04-10T04:14:46Z |
| format | Article |
| id | doaj.art-4680a91dab0b4c78b36d4c48b1a3ce43 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-10T04:14:46Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-4680a91dab0b4c78b36d4c48b1a3ce432023-03-12T04:21:26ZengElsevierNuclear Materials and Energy2352-17912023-03-0134101357Post neutron irradiation annealing and defect evolution in single crystal tungstenD. Papadakis0K. Mergia1E. Manios2V. Chatzikos3S. Dellis4S. Messoloras5Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, NCSR Demokritos, Athens 15310, Greece; Department of Physics, School of Sciences, University of Athens, Athens 15772, GreeceInstitute of Nuclear and Radiological Sciences and Technology, Energy and Safety, NCSR Demokritos, Athens 15310, Greece; Corresponding author.Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, NCSR Demokritos, Athens 15310, GreeceInstitute of Nuclear and Radiological Sciences and Technology, Energy and Safety, NCSR Demokritos, Athens 15310, GreeceInstitute of Nuclear and Radiological Sciences and Technology, Energy and Safety, NCSR Demokritos, Athens 15310, GreeceInstitute of Nuclear and Radiological Sciences and Technology, Energy and Safety, NCSR Demokritos, Athens 15310, GreeceSingle crystal W is offered for Physics understanding of irradiation induced defects and their annealing as its structure is well defined and it is almost defect free. W(100) single crystal was neutron irradiated to a damage of 0.11 displacements per atom at 600 °C and subsequently isochronally annealed from 700 up to 1500 °C in 100 °C steps. Irradiation causes the formation of dislocation loops and vacancy clusters and a 45 % increase in hardness. After the annealing of 1500 °C the positron lifetime annihilation spectrum shows a defect free material and its hardness has been reverted to the pre-irradiation value and only clusters of Re, WRe and WOs2 have been detected by grazing incidence X-ray diffraction. The total line density of dislocations, number density of voids and their size versus annealing temperature have been determined. From hardness, the critical resolved stresses arising from dislocations and voids have been derived and correlated with their densities. The kinetics of defect annihilation versus annealing temperature is discussed.http://www.sciencedirect.com/science/article/pii/S2352179122002381Radiation damageTungsten single crystalPost-irradiation annealingPositron annihilation lifetime spectroscopyElectrical resistivityHardness |
| spellingShingle | D. Papadakis K. Mergia E. Manios V. Chatzikos S. Dellis S. Messoloras Post neutron irradiation annealing and defect evolution in single crystal tungsten Nuclear Materials and Energy Radiation damage Tungsten single crystal Post-irradiation annealing Positron annihilation lifetime spectroscopy Electrical resistivity Hardness |
| title | Post neutron irradiation annealing and defect evolution in single crystal tungsten |
| title_full | Post neutron irradiation annealing and defect evolution in single crystal tungsten |
| title_fullStr | Post neutron irradiation annealing and defect evolution in single crystal tungsten |
| title_full_unstemmed | Post neutron irradiation annealing and defect evolution in single crystal tungsten |
| title_short | Post neutron irradiation annealing and defect evolution in single crystal tungsten |
| title_sort | post neutron irradiation annealing and defect evolution in single crystal tungsten |
| topic | Radiation damage Tungsten single crystal Post-irradiation annealing Positron annihilation lifetime spectroscopy Electrical resistivity Hardness |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122002381 |
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