Microstructural characterization of YO ODS-Fe-Cr model alloys
Two Fe-12 wt% Cr alloys, one containing 0.4 wt% YO and the other YO-free, have been produced by mechanical alloying followed by hot isostatic pressing. These oxide dispersion strengthened and reference alloys were characterized both in the as-HIPed state and after tempering by transmission electron...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
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2009
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| _version_ | 1797100492620300288 |
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| author | de Castro, V Marquis, E Lozano-Perez, S Jenkins, M Leguey, T Muñoz, A Monge, M Pareja, R |
| author_facet | de Castro, V Marquis, E Lozano-Perez, S Jenkins, M Leguey, T Muñoz, A Monge, M Pareja, R |
| author_sort | de Castro, V |
| collection | OXFORD |
| description | Two Fe-12 wt% Cr alloys, one containing 0.4 wt% YO and the other YO-free, have been produced by mechanical alloying followed by hot isostatic pressing. These oxide dispersion strengthened and reference alloys were characterized both in the as-HIPed state and after tempering by transmission electron microscopy and atom-probe tomography. The as-HIPed alloys exhibited the characteristic microstructure of lath martensite and contained a high density of dislocations. Small voids with sizes <10 nm were also observed. Both alloys also contained MC and MC carbides (M = Cr, Fe) probably as a result of C ingress during milling. After tempering at 1023 K for 4 h the microstructures had partially recovered. In the recovered regions, martensite laths were replaced by equiaxed grains in which MC carbides decorated the grain boundaries. In the ODS alloy nanoparticles containing Y were commonly observed within grains, although they were also present at grain boundaries and adjacent to large carbides. © 2009 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-07T05:38:18Z |
| format | Journal article |
| id | oxford-uuid:e4af3f3e-a9c7-442c-8fec-a05a50d24ae1 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:38:18Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:e4af3f3e-a9c7-442c-8fec-a05a50d24ae12022-03-27T10:18:22ZMicrostructural characterization of YO ODS-Fe-Cr model alloysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e4af3f3e-a9c7-442c-8fec-a05a50d24ae1Symplectic Elements at Oxford2009de Castro, VMarquis, ELozano-Perez, SJenkins, MLeguey, TMuñoz, AMonge, MPareja, RTwo Fe-12 wt% Cr alloys, one containing 0.4 wt% YO and the other YO-free, have been produced by mechanical alloying followed by hot isostatic pressing. These oxide dispersion strengthened and reference alloys were characterized both in the as-HIPed state and after tempering by transmission electron microscopy and atom-probe tomography. The as-HIPed alloys exhibited the characteristic microstructure of lath martensite and contained a high density of dislocations. Small voids with sizes <10 nm were also observed. Both alloys also contained MC and MC carbides (M = Cr, Fe) probably as a result of C ingress during milling. After tempering at 1023 K for 4 h the microstructures had partially recovered. In the recovered regions, martensite laths were replaced by equiaxed grains in which MC carbides decorated the grain boundaries. In the ODS alloy nanoparticles containing Y were commonly observed within grains, although they were also present at grain boundaries and adjacent to large carbides. © 2009 Elsevier B.V. All rights reserved. |
| spellingShingle | de Castro, V Marquis, E Lozano-Perez, S Jenkins, M Leguey, T Muñoz, A Monge, M Pareja, R Microstructural characterization of YO ODS-Fe-Cr model alloys |
| title | Microstructural characterization of YO ODS-Fe-Cr model alloys |
| title_full | Microstructural characterization of YO ODS-Fe-Cr model alloys |
| title_fullStr | Microstructural characterization of YO ODS-Fe-Cr model alloys |
| title_full_unstemmed | Microstructural characterization of YO ODS-Fe-Cr model alloys |
| title_short | Microstructural characterization of YO ODS-Fe-Cr model alloys |
| title_sort | microstructural characterization of yo ods fe cr model alloys |
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