CHANGEMENTS DE PHASES ET MICROSTRUCTURES
J. Phys. IV France 04 (1994) C3-193-C3-197
Etude de la précipitation du cuivre sous irradiation électronique dans des alliages dilués à base de ferM.H. MATHON1, F. MAURY1, A. BARBU1, N. SMETNIANSKY1, N. LORENZELLI1, C.H. DE NOVION1 and F. BOUE2
1 Laboratoire des Solides Irradiés, Ecole Polytechnique, 91128 Palaiseau, France
2 Laboratoire Léon Brillouin, CE/Saclay, 91191 Gif-sur-Yvette, France
The copper precipitation in dilute ferritic alloys ( FeCu et FeCuMn ) has been studied under electron irradiation in the 170-370°C temperature range. The matrix depletion at low fluence has been followed by in situ electrical resistivity measurements, the mean radius and the number density of precipitates have been measured at higher fluence by Small Angle Neutron Scattering. The copper precipitation is not affected by manganese at 300°C but is strongly inhibited at 215°C. It is shown that a simple radiation enhanced precipitation model can reproduce quit well the first stage of precipitation but fails in the pure coarsening regime.
© EDP Sciences 1994