Influence de la dose de neutrons rapides sur la formation des cavites dans l'aluminium

Performance of Aluminum in Research Reactors

“…It was speculated that the loops were vacancy-type, growing from collapse of vacancy clusters produced by the irradiation. French studies 55,56 have corroborated and enlarged on the heterogeneous nature of evolution of early damage microstructure and the roles of dislocations in Al.…”

“…The helium atoms formed from the Ni in the stringers are recoilimplanted into the near-matrix regions surrounding the stringers where they accelerate local formation of voids and dislocations. The recoiled 56 Fe atoms cause extra dpa locally. 67 These He-enriched regions are not as obvious as those around B 4 C inclusions.…”

Unlimited damage accumulation in metallic materials under cascade-damage conditions

“…[12,[64][65][66][67][68] and growth of voids in the compression side of edge dislocations (see e.g. [62,[69][70]) has been known for a long time. More recent evidence is due to Kozlov, Portnykh et al [71,72] and Xu et al [73].…”

Non-linear dynamics of microstructure evolution and hyper void-lattice formation

“…Available experimental data on void swelling in aluminum is also completely explicable in terms of the concept of standard rate theory based on the dislocation bias [16][17][18][19]. Production bias [20] and initial defect clustering in cascades do not seem to play an important role.…”

“…As a result, with the account of the 1-D self-interstitial flux given by Eq. (17), the total growth rate of aligned voids can be written as…”