Bombardment of Fe with 5MeV electrons resulted in the generation of point defects, within small cascades, which changed the shape of the stage-I resistivity recovery spectrum and stimulated the formation of di-interstitials that made their migration felt near to the ID1 sub-stage. The specific features of stage-I recovery in concentrated Fe-Cr alloys were explained in terms of mixed dumb-bell formation, migration and trapping in configurations which included several Cr atoms. The resistivity values of the alloys at the end of stage I could be accurately described in terms of the trapping of Fe-Cr mixed dumb-bells in Cr-atom pairs.

Stage I of Recovery in 5MeV Electron-Irradiated Iron and Iron-Chromium Alloys - the Effect of Small Cascades, Migration of Di-Interstitials and Mixed Dumbbells. A.L.Nikolaev: Journal of Physics - Condensed Matter, 1999, 11[44], 8633-44