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Title

Direct observation of creep strengthening nanoprecipitate formation in ausformed ferritic/martensitic steels

AuthorsVivas, Javier; De-Castro, D.; Poplawsky, J.D.; San-Martín, D. ; Capdevila, Carlos
KeywordsAtom probe tomography
Ausforming
Creep resistant steels
Creep strength
MX nanoprecipitates
Issue Date2019
PublisherPergamon Press
CitationScripta Materialia 164: 76-81 (2019)
AbstractIt is well known the effectiveness of ausforming on increasing the dislocation density of fresh martensite. This work demonstrates, using atom probe tomography, that this increase in the dislocation density has a strong influence on the nucleation of nanoprecipitates during tempering. Therefore, ausforming might be a powerful processing route for the two-fold improvement of ferritic/martensitic steels where creep resistance is of paramount importance. Firstly, ausforming refines the martensitic microstructure (high strength and toughness), and secondly, it increases the number density of thermally stable nanoprecipitates (creep resistance).
Publisher version (URL)https://doi.org/10.1016/j.scriptamat.2019.01.036
URIhttp://hdl.handle.net/10261/187526
DOIhttp://dx.doi.org/10.1016/j.scriptamat.2019.01.036
Identifiersdoi: 10.1016/j.scriptamat.2019.01.036
issn: 1359-6462
Appears in Collections:(CENIM) Artículos
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