Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material
ODS steels are promising materials for Sodium cooled Fast Reactors since their fine distribution of nano-clusters confers excellent mechanical properties. However, the nano-feature stability needs to be assessed under neutron irradiation. Before irradiation, the characterizations show that nano-part...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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2014
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| _version_ | 1826264835905552384 |
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| author | Ribis, J Lozano-Perez, S |
| author_facet | Ribis, J Lozano-Perez, S |
| author_sort | Ribis, J |
| collection | OXFORD |
| description | ODS steels are promising materials for Sodium cooled Fast Reactors since their fine distribution of nano-clusters confers excellent mechanical properties. However, the nano-feature stability needs to be assessed under neutron irradiation. Before irradiation, the characterizations show that nano-particles are finely distributed within the ferritic matrix and are identified to have a pyrochlore type structure. After irradiation of the MA957 alloy in the Phenix French reactor at 412 C up to 50 dpa and 430 C up to 75 dpa, transmission electron microscopy characterization reveals a very slight density fall but no distinguishable difference in nano-features size before and after irradiation. In addition, after both irradiations, the nano-oxides are still (Y, Ti, O) compounds with orientation relationship with the matrix. A multislice simulation of high resolution images suggests that nano-particles still have a fcc pyrochlore type structure after irradiation. A possible change of lattice parameter seems to be highlighted, possibly due to disordering by cascade effect. © 2013 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T20:14:13Z |
| format | Journal article |
| id | oxford-uuid:2b9d0efc-d344-4107-9420-60507d5e8357 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:14:13Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | oxford-uuid:2b9d0efc-d344-4107-9420-60507d5e83572022-03-26T12:31:54ZNano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened materialJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2b9d0efc-d344-4107-9420-60507d5e8357EnglishSymplectic Elements at Oxford2014Ribis, JLozano-Perez, SODS steels are promising materials for Sodium cooled Fast Reactors since their fine distribution of nano-clusters confers excellent mechanical properties. However, the nano-feature stability needs to be assessed under neutron irradiation. Before irradiation, the characterizations show that nano-particles are finely distributed within the ferritic matrix and are identified to have a pyrochlore type structure. After irradiation of the MA957 alloy in the Phenix French reactor at 412 C up to 50 dpa and 430 C up to 75 dpa, transmission electron microscopy characterization reveals a very slight density fall but no distinguishable difference in nano-features size before and after irradiation. In addition, after both irradiations, the nano-oxides are still (Y, Ti, O) compounds with orientation relationship with the matrix. A multislice simulation of high resolution images suggests that nano-particles still have a fcc pyrochlore type structure after irradiation. A possible change of lattice parameter seems to be highlighted, possibly due to disordering by cascade effect. © 2013 Elsevier B.V. All rights reserved. |
| spellingShingle | Ribis, J Lozano-Perez, S Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material |
| title | Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material |
| title_full | Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material |
| title_fullStr | Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material |
| title_full_unstemmed | Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material |
| title_short | Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material |
| title_sort | nano cluster stability following neutron irradiation in ma957 oxide dispersion strengthened material |
| work_keys_str_mv | AT ribisj nanoclusterstabilityfollowingneutronirradiationinma957oxidedispersionstrengthenedmaterial AT lozanoperezs nanoclusterstabilityfollowingneutronirradiationinma957oxidedispersionstrengthenedmaterial |