The effect of oxygen on dislocation channeling in neutron irradiated vanadium

Abstract The phenomenon of "dislocation channeling" has been observed in many metals. However, there have not been any systematic investigations af the effect of an impurity interstitial on channeling. The purpose of this investigation was to study the effect of oxygen on the channeling in neutron irradiated and deformed single crystals of vanadium. One of the main observations was the appearance of dislocation tangles and arrays within the channels independent of oxygen concentration. The probability of observing dislocation arrays and density of dislocations within the channels increased with increasing oxygen concentration. However, the dislocations within the channels are probably remnants of a widening process, for the density of dislocations within the channels increased with increasing foil thickness A niechanisni was proposed for channel widening which would predict dislocation remnants within the channels.