Abstract
The high-temperature creep strength of metallic materials is greatly improved by the presence of finely-dispersed, incoherent particles. An experimental study of the interaction between superdislocations and dispersoids has, however, not yet been reported. In this paper the authors present preliminary observations of such interactions studied by weak-beam TEM in a Ni{sub 3}Al-based alloy. Several new features appear vis-a-vis disordered matrix materials, which may eventually also be of interest for alloy development.
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