The geometrical configuration of kinks on screw superdislocations in Ni3Al deformed at room temperature
- 1 May 1990
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 61 (5), 259-267
- https://doi.org/10.1080/09500839008206364
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.Keywords
This publication has 8 references indexed in Scilit:
- Temperature effect on superdislocation dissociation on a cube plane in Ni3AlPhilosophical Magazine Letters, 1989
- A TEM weak-beam study of dislocations in γ' in a deformed Ni-based superalloyPhilosophical Magazine A, 1988
- Weak-beam study of superlattice dislocations moving on cube planes in Ni3(Al, Ti) deformed at room temperaturePhilosophical Magazine A, 1988
- A theory of the anomalous yield behavior in L12 ordered alloysActa Metallurgica, 1984
- Dislocation structures in deformed single-crystal Ni3(Al, Ti)Philosophical Magazine, 1975
- Temperature and orientation dependence of the yield stress in Ni{in3}Ga single crystalsActa Metallurgica, 1973
- The temperature dependence of the flow stress of the γ′ phase based upon Ni3AlMetallurgical Transactions, 1970
- Cross slip, antiphase defects and work hardening in ordered Cu3AuActa Metallurgica, 1966