Influence of phosphorus on the tensile stress strain curves in copper
2016 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 470, 290-296 p.Article in journal (Refereed) PublishedText
Copper canisters are planned to be used for final disposal of spent nuclear fuel in Sweden. The canisters will be exposed to slow plastic straining over extensive periods of time. To be able to predict the mechanical properties a range of basic models have previously been developed for copper with and without phosphorus (Cu-OFP, Cu-OF). Already with the small amount of phosphorus added in the canisters (60 wt. ppm) dramatic improvements in the measured creep strength and the creep ductility are found. The basic models are further developed in the present paper. The influence of phosphorus on slow strain rate tests is analysed. It is shown that the main effect of phosphorus is that it prevents brittle rupture, which is modelled by taking creep cavitation into account.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 470, 290-296 p.
Copper, Creep, Phosphorus, Slow strain rate tests
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-180906DOI: 10.1016/j.jnucmat.2015.12.024ISI: 000370379100033ScopusID: 2-s2.0-84953729141OAI: oai:DiVA.org:kth-180906DiVA: diva2:898691
QC 20160129. QC 201603192016-01-292016-01-252016-03-19Bibliographically approved