Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation
Fusion like conditions for reduced activation ferritic/martensitic steels in the first wall are simulated with single Fe3+ and He+/Fe3+ dual ion beam irradiation of EUROFER97 at the Jannus laboratory, CEA Saclay, introducing a damage of 16 dpa and a helium content up to 260 appm. The samples are irr...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-05-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179117301357 |
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| author | B. Kaiser E. Gaganidze C. Dethloff R. Schwaiger D. Brimbal M. Payet L. Beck J. Aktaa |
| author_facet | B. Kaiser E. Gaganidze C. Dethloff R. Schwaiger D. Brimbal M. Payet L. Beck J. Aktaa |
| author_sort | B. Kaiser |
| collection | DOAJ |
| description | Fusion like conditions for reduced activation ferritic/martensitic steels in the first wall are simulated with single Fe3+ and He+/Fe3+ dual ion beam irradiation of EUROFER97 at the Jannus laboratory, CEA Saclay, introducing a damage of 16 dpa and a helium content up to 260 appm. The samples are irradiated at temperatures of 330 °C, 400 °C and 500 °C. The quantitative determination of size distribution and density of dislocation loops is obtained using weak-beam dark-field imaging mode. Burgers vectors of a02〈111〉 are observed for the majority of dislocation loops at irradiation temperatures of 330 °C and 400 °C. At 500 °C no dislocation loops are found. The impact of single and dual ion beam irradiation on mechanical properties is determined by means of nanoindentation. An increase in nano-hardness of up to 35% due to irradiation was measured at samples irradiated at 400 °C. A kinetic rate model is applied for the description of nucleation and evolution of helium bubbles and compared with the experimental results. Evaluating the rate model with help of TEM-results for size and density of bubbles indicates the nucleation scheme as the main source for quantitative disagreement between the model and irradiation. Keywords: Radiation effects, Ion irradiation, Cluster dynamics, Fusion, Helium bubbles, RAFM steels |
| first_indexed | 2024-12-23T19:55:37Z |
| format | Article |
| id | doaj.art-8e3604092de342bc886d9c3ad6e31f0f |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-23T19:55:37Z |
| publishDate | 2018-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-8e3604092de342bc886d9c3ad6e31f0f2022-12-21T17:33:15ZengElsevierNuclear Materials and Energy2352-17912018-05-0115148153Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiationB. Kaiser0E. Gaganidze1C. Dethloff2R. Schwaiger3D. Brimbal4M. Payet5L. Beck6J. Aktaa7Corresponding author.; Karlsruhe Institute of Technology, Institute for Applied Materials (IAM), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials (IAM), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials (IAM), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials (IAM), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, GermanyCEA, DEN, Service de Recherches de Métallurgie Physique, Laboratoire JANNUS, Gif-sur-Yvette F-91191, FranceCEA, DEN, Service de Recherches de Métallurgie Physique, Laboratoire JANNUS, Gif-sur-Yvette F-91191, FranceCEA, DEN, Service de Recherches de Métallurgie Physique, Laboratoire JANNUS, Gif-sur-Yvette F-91191, FranceKarlsruhe Institute of Technology, Institute for Applied Materials (IAM), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, GermanyFusion like conditions for reduced activation ferritic/martensitic steels in the first wall are simulated with single Fe3+ and He+/Fe3+ dual ion beam irradiation of EUROFER97 at the Jannus laboratory, CEA Saclay, introducing a damage of 16 dpa and a helium content up to 260 appm. The samples are irradiated at temperatures of 330 °C, 400 °C and 500 °C. The quantitative determination of size distribution and density of dislocation loops is obtained using weak-beam dark-field imaging mode. Burgers vectors of a02〈111〉 are observed for the majority of dislocation loops at irradiation temperatures of 330 °C and 400 °C. At 500 °C no dislocation loops are found. The impact of single and dual ion beam irradiation on mechanical properties is determined by means of nanoindentation. An increase in nano-hardness of up to 35% due to irradiation was measured at samples irradiated at 400 °C. A kinetic rate model is applied for the description of nucleation and evolution of helium bubbles and compared with the experimental results. Evaluating the rate model with help of TEM-results for size and density of bubbles indicates the nucleation scheme as the main source for quantitative disagreement between the model and irradiation. Keywords: Radiation effects, Ion irradiation, Cluster dynamics, Fusion, Helium bubbles, RAFM steelshttp://www.sciencedirect.com/science/article/pii/S2352179117301357 |
| spellingShingle | B. Kaiser E. Gaganidze C. Dethloff R. Schwaiger D. Brimbal M. Payet L. Beck J. Aktaa Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation Nuclear Materials and Energy |
| title | Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation |
| title_full | Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation |
| title_fullStr | Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation |
| title_full_unstemmed | Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation |
| title_short | Investigation of microstructure defects in EUROFER97 under He+/Fe3+ dual ion beam irradiation |
| title_sort | investigation of microstructure defects in eurofer97 under he fe3 dual ion beam irradiation |
| url | http://www.sciencedirect.com/science/article/pii/S2352179117301357 |
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