Interaction of self-interstitials with solutes

For a series of solutes in Cu the enthalpy changes of solute self-interstitial binding are derived from isochronal resistivity recovery data of stage II. For solutes in Al reliable conclusions on binding enthalpies can be deduced only from resistivity damage rate measurements. For Cu as solvent both binding enthalpies and spatial ranges of solute interstitial interaction are in fair agreement with theoretical predictions. For Al both quantities are larger by a factor of about ten in experiment than in theory. For other metals various difficulties prevent an evaluation of binding enthalpies.Rutherford backscattering and Mössbauer studies are sensitive to the configuration of solute self-interstitial pairs. From vanishing of detectable configurations upon isochronal annealing binding enthalpies can be derived. The results reported thus far are generally in agreement with the above resistivity results.Field ion microscopy is discussed as a direct observation method for self-interstitials which escaped solute traps and arrived at the tip surface via long range migration.