In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97
In this work, we employed in-situ S/TEM techniques to investigate deformation and damage mechanisms in neutron-irradiated reduced-activation ferritic/martensitic (RAFM) EUROFER97 steel subjected to a dose of 15 dpa at 330 °C. The irradiated microstructure revealed uniformly distributed dislocation l...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Philosophical Magazine Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/09500839.2025.2512307 |
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| author | Qian Yuan Ankur Chauhan Lakshay Chauhan Dimitri Litvinov Ermile Gaganidze Hans-Christian Schneider Jarir Aktaa |
| author_facet | Qian Yuan Ankur Chauhan Lakshay Chauhan Dimitri Litvinov Ermile Gaganidze Hans-Christian Schneider Jarir Aktaa |
| author_sort | Qian Yuan |
| collection | DOAJ |
| description | In this work, we employed in-situ S/TEM techniques to investigate deformation and damage mechanisms in neutron-irradiated reduced-activation ferritic/martensitic (RAFM) EUROFER97 steel subjected to a dose of 15 dpa at 330 °C. The irradiated microstructure revealed uniformly distributed dislocation loops and sporadic nanometer-sized cavities. During in-situ straining of a focused-ion beam (FIB)-prepared lamella, mobile line dislocations were observed to interact with dislocation loops, leading to loop absorption and the formation of dislocation networks. Further straining resulted in the formation of a dislocation-loop-free zone. Within this region, deformation-induced nanometer-sized cavities emerged, likely from pre-existing irradiation-induced clusters, cavities, or remnants of absorbed loops. Coalescence of these cavities led to the formation of micro-cracks and ultimately to the fracture of the lamella. This suggests premature failure of the irradiated sample compared to its unirradiated counterpart, highlighting irradiation-induced embrittlement. |
| format | Article |
| id | doaj-art-604e966057a14b2bac6d02aad413dc52 |
| institution | DOAJ |
| issn | 0950-0839 1362-3036 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Philosophical Magazine Letters |
| spelling | doaj-art-604e966057a14b2bac6d02aad413dc522025-08-20T03:19:27ZengTaylor & Francis GroupPhilosophical Magazine Letters0950-08391362-30362025-12-01105110.1080/09500839.2025.2512307In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97Qian Yuan0Ankur Chauhan1Lakshay Chauhan2Dimitri Litvinov3Ermile Gaganidze4Hans-Christian Schneider5Jarir Aktaa6Karlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyKarlsruhe Institute of Technology (KIT), Institute for Applied Materials, Eggenstein-Leopoldshafen, GermanyIn this work, we employed in-situ S/TEM techniques to investigate deformation and damage mechanisms in neutron-irradiated reduced-activation ferritic/martensitic (RAFM) EUROFER97 steel subjected to a dose of 15 dpa at 330 °C. The irradiated microstructure revealed uniformly distributed dislocation loops and sporadic nanometer-sized cavities. During in-situ straining of a focused-ion beam (FIB)-prepared lamella, mobile line dislocations were observed to interact with dislocation loops, leading to loop absorption and the formation of dislocation networks. Further straining resulted in the formation of a dislocation-loop-free zone. Within this region, deformation-induced nanometer-sized cavities emerged, likely from pre-existing irradiation-induced clusters, cavities, or remnants of absorbed loops. Coalescence of these cavities led to the formation of micro-cracks and ultimately to the fracture of the lamella. This suggests premature failure of the irradiated sample compared to its unirradiated counterpart, highlighting irradiation-induced embrittlement.https://www.tandfonline.com/doi/10.1080/09500839.2025.2512307In-situ S/TEM strainingdeformation and damage mechanismsneutron irradiationirradiation-induced defectsRAFM steel |
| spellingShingle | Qian Yuan Ankur Chauhan Lakshay Chauhan Dimitri Litvinov Ermile Gaganidze Hans-Christian Schneider Jarir Aktaa In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97 Philosophical Magazine Letters In-situ S/TEM straining deformation and damage mechanisms neutron irradiation irradiation-induced defects RAFM steel |
| title | In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97 |
| title_full | In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97 |
| title_fullStr | In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97 |
| title_full_unstemmed | In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97 |
| title_short | In-situ S/TEM investigations of deformation and damage mechanisms in neutron-irradiated EUROFER97 |
| title_sort | in situ s tem investigations of deformation and damage mechanisms in neutron irradiated eurofer97 |
| topic | In-situ S/TEM straining deformation and damage mechanisms neutron irradiation irradiation-induced defects RAFM steel |
| url | https://www.tandfonline.com/doi/10.1080/09500839.2025.2512307 |
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