Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa
Pure W and W-Cr-Hf alloy which are prospective materials for nuclear fusion reactors, such as DEMO, were irradiated at room temperature with 5 MeV Au2+ ions with fluences between 4 × 1014 and 1.3 × 1016 ions.cm−2 to generate various levels of lattice damage from about units up to tens of dpa. The di...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Nuclear Materials and Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179121001514 |
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| author | A. Macková S. Fernandes J. Matejíček M. Vilémová V. Holý M.O. Liedke J. Martan M. Vronka M. Potoček P. Bábor M. Butterling A.G. Attallah E. Hirschmann A. Wagner V. Havránek |
| author_facet | A. Macková S. Fernandes J. Matejíček M. Vilémová V. Holý M.O. Liedke J. Martan M. Vronka M. Potoček P. Bábor M. Butterling A.G. Attallah E. Hirschmann A. Wagner V. Havránek |
| author_sort | A. Macková |
| collection | DOAJ |
| description | Pure W and W-Cr-Hf alloy which are prospective materials for nuclear fusion reactors, such as DEMO, were irradiated at room temperature with 5 MeV Au2+ ions with fluences between 4 × 1014 and 1.3 × 1016 ions.cm−2 to generate various levels of lattice damage from about units up to tens of dpa. The distinct character of radiation damage accumulation, microstructure and defect nature have been observed in both pure W and W-Cr-Hf alloys, the latter exhibited interesting ability of damage reorganisation and defect size decrease at the higher ion fluences as determined by positron annihilation spectroscopy (PAS). High radiation damage rate in the irradiated layer has been evidenced in the W samples already at the lower Au-ion fluences compared to W-Cr-Hf samples, where the damage increased in steps with the increasing Au-ion fluence. The distinct defect accumulation was accompanied with the different Au-ion implanted distribution in the irradiated layer determined by Secondary Ion Mass Spectrometry (SIMS) as well as the thermal properties have shown the consequent worsening in the depth in good agreement with the Au-depth concentration profiles. TEM corroborated above mentioned findings, where the sub-surface layer exhibited defect release after the irradiation, the maximum of dislocation loop density has been identified in the depth according the predicted dpa (displacement particles per atom) maximum for the lower Au-ion fluences. Moreover, TEM shows the dislocation density band structure appeared in W-Cr-Hf samples exhibiting the high density defect band according the projected range of the Au-ions simultaneously with the additional layer with larger isolated dislocations pronounced in the higher depth as a growing function of Au-ion fluence. Such phenomenon was not observed in W samples. |
| first_indexed | 2024-12-20T23:45:11Z |
| format | Article |
| id | doaj.art-86d7509d95ff4959948a5dcac15b8f45 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-20T23:45:11Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-86d7509d95ff4959948a5dcac15b8f452022-12-21T19:22:58ZengElsevierNuclear Materials and Energy2352-17912021-12-0129101085Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpaA. Macková0S. Fernandes1J. Matejíček2M. Vilémová3V. Holý4M.O. Liedke5J. Martan6M. Vronka7M. Potoček8P. Bábor9M. Butterling10A.G. Attallah11E. Hirschmann12A. Wagner13V. Havránek14Nuclear Physics Institute of the Czech Academy of Sciences, 250 68 Husinec - Řež, Czech Republic; Department of Physics, Faculty of Science, J.E. Purkyne University, Pasteurova 3632/15, 400 96 Ústí nad Labem, Czech Republic; Corresponding author.Nuclear Physics Institute of the Czech Academy of Sciences, 250 68 Husinec - Řež, Czech Republic; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, SAFIR, F-75005 Paris, FranceInstitute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 18200 Prague, Czech RepublicInstitute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 18200 Prague, Czech RepublicDepartment of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University Ke, Karlovu 5, 121 16 Prague 2, Czech Republic; Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech RepublicHelmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Bautzner Landstraße 400, 01328 Dresden, GermanyNew Technologies - Research Centre, University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech RepublicInstitute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 18221 Prague, Czech RepublicCentral European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic; Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech RepublicCentral European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic; Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech RepublicHelmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Bautzner Landstraße 400, 01328 Dresden, GermanyHelmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Bautzner Landstraße 400, 01328 Dresden, GermanyHelmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Bautzner Landstraße 400, 01328 Dresden, GermanyHelmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Bautzner Landstraße 400, 01328 Dresden, GermanyNuclear Physics Institute of the Czech Academy of Sciences, 250 68 Husinec - Řež, Czech RepublicPure W and W-Cr-Hf alloy which are prospective materials for nuclear fusion reactors, such as DEMO, were irradiated at room temperature with 5 MeV Au2+ ions with fluences between 4 × 1014 and 1.3 × 1016 ions.cm−2 to generate various levels of lattice damage from about units up to tens of dpa. The distinct character of radiation damage accumulation, microstructure and defect nature have been observed in both pure W and W-Cr-Hf alloys, the latter exhibited interesting ability of damage reorganisation and defect size decrease at the higher ion fluences as determined by positron annihilation spectroscopy (PAS). High radiation damage rate in the irradiated layer has been evidenced in the W samples already at the lower Au-ion fluences compared to W-Cr-Hf samples, where the damage increased in steps with the increasing Au-ion fluence. The distinct defect accumulation was accompanied with the different Au-ion implanted distribution in the irradiated layer determined by Secondary Ion Mass Spectrometry (SIMS) as well as the thermal properties have shown the consequent worsening in the depth in good agreement with the Au-depth concentration profiles. TEM corroborated above mentioned findings, where the sub-surface layer exhibited defect release after the irradiation, the maximum of dislocation loop density has been identified in the depth according the predicted dpa (displacement particles per atom) maximum for the lower Au-ion fluences. Moreover, TEM shows the dislocation density band structure appeared in W-Cr-Hf samples exhibiting the high density defect band according the projected range of the Au-ions simultaneously with the additional layer with larger isolated dislocations pronounced in the higher depth as a growing function of Au-ion fluence. Such phenomenon was not observed in W samples.http://www.sciencedirect.com/science/article/pii/S2352179121001514W and W-Cr alloy ion irradiationRadiation damageFusion materialsStructure analysis of defects |
| spellingShingle | A. Macková S. Fernandes J. Matejíček M. Vilémová V. Holý M.O. Liedke J. Martan M. Vronka M. Potoček P. Bábor M. Butterling A.G. Attallah E. Hirschmann A. Wagner V. Havránek Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa Nuclear Materials and Energy W and W-Cr alloy ion irradiation Radiation damage Fusion materials Structure analysis of defects |
| title | Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa |
| title_full | Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa |
| title_fullStr | Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa |
| title_full_unstemmed | Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa |
| title_short | Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa |
| title_sort | radiation damage evolution in pure w and w cr hf alloy caused by 5 mev au ions in a broad range of dpa |
| topic | W and W-Cr alloy ion irradiation Radiation damage Fusion materials Structure analysis of defects |
| url | http://www.sciencedirect.com/science/article/pii/S2352179121001514 |
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