V. M. Lebedev, V. T. Lebedev, S. P. Orlov, B. Z. Margolin, A. M. Morozov, “Small-angle neutron scattering investigation of the nanostructure of the SAV-1 alloy irradiated with fast neutrons to high fluences”, Fizika Tverdogo Tela, 2014, Volume 56, Issue 1,Pages <nobr>160

XXII International Conference on the Use of Neutron Scattering in Condensed Matter Research (RNICS-2012), St. Petersburg, Zelenogorsk (October 15-19, 2012)
Functional materials

Small-angle neutron scattering investigation of the nanostructure of the SAV-1 alloy irradiated with fast neutrons to high fluences

V. M. Lebedev^a, V. T. Lebedev^a, S. P. Orlov^a, B. Z. Margolin^b, A. M. Morozov^b

^a The Petersburg Nuclear Physics Institute, The National Research Center "Kurchatov Institute"
^b Prometei Central Research Institute of Structural Materials, St. Petersburg

Abstract: The supra-atomic structure in samples of the SAV-1 alloy (unirradiated and irradiated with fast neutron fluences of 3.48 $\times$ 10$^{22}$ n/cm$^2$) has been investigated using small-angle neutron scattering. It has been found that, in the irradiated material, the volume fraction of scattering structures (pores) with a radius of 40––50 nm significantly decreases, which is compensated to a large extent by an increase in the total fraction of these objects with a radius of less than 20 nm. The results of neutron scattering investigations correlate with the data of mechanical tests of the irradiated alloys and with the changes in their elemental composition.