Anomalously large deformation of 12Cr18Ni10Ti austenitic steel irradiated to 55dpa at 310 C in the BN-350 reactor

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dc.contributor.author O.P.Maksimkin
dc.contributor.author M.N.Gusev
dc.contributor.author I.S Osipov
dc.contributor.author F.A.Garner
dc.date.accessioned 2012-06-30T11:42:04Z
dc.date.available 2012-06-30T11:42:04Z
dc.date.issued 2012-06-30
dc.identifier.uri http://repository.enu.kz/handle/123456789/997
dc.description.abstract Whereas most previous irradiation studies conducted at lower neutron exposures in the range 100- 400ºC have consistently produced strengthening and strongly reduced ductility in stainless steels it now appears possible that higher exposures may lead to a reversal in ductility loss for some steels. A new radiation-induced phenomenon has been observed in 12Cr18Ni10Ti stainless steel irradiated to 55 dpa. It involves “a moving wave of plastic deformation” at 20ºC that produces “anomalously” high values of engineering ductility, especially when compared to deformation occurring at lower neutron exposures. Using the technique of digital optical extensometry the “true stress σ –true strain ε” curves were obtained. It was shown that a moving wave of plastic deformation occurs as a result of an increase in the intensity of strain hardening, dσ/dε(ε). The increase in strain hardening is thought to arise from an irradiation-induced increase in the propensity of the γ→α martensitic transformation. en_US
dc.language.iso en en_US
dc.subject yield strength Curve 2 band en_US
dc.title Anomalously large deformation of 12Cr18Ni10Ti austenitic steel irradiated to 55dpa at 310 C in the BN-350 reactor en_US


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