The geometrical configuration of kinks on screw superdislocations in Ni<sup>3</sup>Al deformed at room temperature

Abstract

Abstract The role of kinks in moving locked screw superdislocations in L12 alloys is studied. In Ni3Al single crystals deformed at room temperature, two types of kinks are identified: single kinks that sit on one superpartial and paired ones. It is shown that both types glide on the primary octahedral plane and interconnect screw superdislocations which are themselves dissociated in the cube cross-slip plane. A geometrical glissile model for the kink is proposed.

References

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