Direct observation of copper precipitation in a neutron irradiated FeCu alloy by 3D atomic tomography
- Univ. de Rouen, Mont Saint Aignan (France). Laboratoire de Microscopie Ionique
Precipitation processes under neutron irradiation are of great interest, of course, because of their importance in nuclear industry but, also, from a theoretical point of view. In this scope, prediction and modelling of the property changes of pressure vessel steels under irradiation require a more in depth knowledge of the microstructural evolution; structural and compositional features of formed precipitates being key parameters. One of the main advantages of the new generation of atom probe that was recently developed, namely the Tomographic Atom Probe (TAP), is that a three-dimensional observation of the spatial distribution of solutes (Cu) can be achieved on a near atomic scale. In this work, the very first three-dimensional (3D) images of neutron irradiated FeCu alloys provided by this new apparatus are presented and discussed. These 3D-reconstructions give for the first time, a direct observation of irradiation induced precipitated particles in these model alloys on a subnanometer scale.
- OSTI ID:
- 237822
- Journal Information:
- Scripta Metallurgica et Materialia, Vol. 33, Issue 7; Other Information: PBD: 1 Oct 1995
- Country of Publication:
- United States
- Language:
- English
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