Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys
Two Fe-12 wt% Cr alloys, one containing 0.4 wt% Y2O3 and the other Y2O3-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 elect...
| Main Authors: | , , , , , , , |
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| Formato: | Conference item |
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2009
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| _version_ | 1826269206537043968 |
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| author | de Castro, V Leguey, T Munoz, A Monge, M Pareja, R Marquis, E Lozano-Perez, S Jenkins, M |
| author_facet | de Castro, V Leguey, T Munoz, A Monge, M Pareja, R Marquis, E Lozano-Perez, S Jenkins, M |
| author_sort | de Castro, V |
| collection | OXFORD |
| description | Two Fe-12 wt% Cr alloys, one containing 0.4 wt% Y2O3 and the other Y2O3-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 M3C and M23C6 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 M23C6 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 | 2024-03-06T21:21:26Z |
| format | Conference item |
| id | oxford-uuid:4193f3a7-bbdc-4642-a04f-51946cb3fb5f |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:21:26Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:4193f3a7-bbdc-4642-a04f-51946cb3fb5f2022-03-26T14:44:30ZMicrostructural characterization of Y2O3 ODS-Fe-Cr model alloysConference itemhttp://purl.org/coar/resource_type/c_5794uuid:4193f3a7-bbdc-4642-a04f-51946cb3fb5fSymplectic Elements at Oxford2009de Castro, VLeguey, TMunoz, AMonge, MPareja, RMarquis, ELozano-Perez, SJenkins, MTwo Fe-12 wt% Cr alloys, one containing 0.4 wt% Y2O3 and the other Y2O3-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 M3C and M23C6 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 M23C6 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 Leguey, T Munoz, A Monge, M Pareja, R Marquis, E Lozano-Perez, S Jenkins, M Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys |
| title | Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys |
| title_full | Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys |
| title_fullStr | Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys |
| title_full_unstemmed | Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys |
| title_short | Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys |
| title_sort | microstructural characterization of y2o3 ods fe cr model alloys |
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