alloys: a comparison of APT and SANS data
نویسندگان
چکیده
The size, number density and compositions of ultrafine copper /manganese precipitates that form in Fe /0.80at.% Cu and Fe / 0.78at.% Cu /1.05at.% Mn model alloys that were neutron irradiated to a fluence of /1 /10 nm 2 (E /1 MeV) at 288 8C have been estimated by atom probe tomography and small-angle neutron scattering (SANS) experiments. The number density of precipitates was approximately an order of magnitude higher in the Fe /Cu /Mn alloy than in the Fe /Cu alloy. A direct comparison of the microstructural parameters estimated by each technique revealed good agreement between the radii of gyration and the number densities. However, the copper content in precipitates inferred from SANS was significantly higher than estimated from the atom probe results. # 2002 Elsevier Science B.V. All rights reserved.
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