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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:27 |
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Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Solid State Physics and Materials Science
Title:
A nanoidentation study of an irradiated aluminium alloy
Authors:
C.Ionescu (1), L.S.Craciun(1), E.St.Barna (2), P.M.Racolta (1), M.Straticiuc (1), A.T.Serban (1), I.Burducea (1)
Affiliation:
(1) Horia Hulubei National Institute of Physics and Nuclear Engineering, 30 Reactorului St., Magurele, Ilfov, 077125, Romania
(2) Faculty of Physics, University of Bucharest, 405 Atomistilor Str., Magurele, Ilfov, 077125, Romania
E-mail
cristina.ionescu@nipne.ro
Keywords:
AFM, Nanoindentation, Irradiated Aluminum alloy, Hardness
Abstract:
In the present work is reported a nanoscale study of the hardness behavior of a few irradiated aluminum alloy samples. This samples source is a piece extracted from the flow control diaphragm inside the primary circuit of the VVR-S nuclear reactor. This aluminum piece stayed in the active zone of the reactor for a period of 40 years (neutron flow 5x10^2 neutrons/ cm2 sec). To investigate surface changes of this piece due to a very long time neutron exposure we have measure hardness by nanoindentation with Atomic Force Microscopy technique. First we obtained the surface topography and then in order to minimize errors we have produce 9 indents on each sample and calculate the average of the hardness values. We obtained different hardness values for each indentation and also for each sample analyzed. In addition this samples were analyzed using an optical inverted metallograph microscope. The VVR-S reactor from IFIN-HH is now in a decommission procedure and we have consider a nice opportunity to investigate the behavior of aluminum alloy aging in high neutron flow along more than 40 years.
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