Interstitialcy migration in electron irradiated cunife alloys

Abstract

The role of interstitials for atomic transport under irradiation is not yet known for most of the concentrated binary and ternary alloys. For a few binary alloys, e.g. CuNi and a-CuZn, interstitialcy mass transport at temperatures around 100 K has been found after MeV electron and fast neutron irradiation at lower temperatures,^1–7. In the present study the residual resistivity behaviour of CuNiFe alloys with a Ni content of 48 at.% and different Fe contents between 0 and 8 at.% was investigated upon isochronal annealing after electron irradiation at 77 K and 473 K. The question is studied whether the addition of undersized Fe atoms modifies or even preventsthe interstitialcy mass transport.