Prismatic dislocation loop rotation and self-climb phenomena in Al—0.13 wt. % Mg
- 1 March 1973
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 27 (3) , 689-695
- https://doi.org/10.1080/14786437308219241
Abstract
Direct experimental evidence is presented of the rotation of hexagonal prismatic dislocation loops in a quenched aluminium-magnesium alloy. The hexagonal prismatic loops, which are produced by the unfaulting of Frank vacancy loops, are shown to undergo rotation about an axis parallel to their pure-edge sides, from their original {111} orientation to an orientation close to {110}. In no observed instance has the precise {110} orientation been adopted. It is also shown that hexagonal prismatic loops in the {111} orientation may develop 〈112〉 type sides by self-climb, and that these loops also are capable of rotation. The assertion that hexagonal prismatic loops need to lose their pure-edge sides and adopt a rhombic shape on the {111} plane, prior to a possible orientation change, is thus disproved.Keywords
This publication has 11 references indexed in Scilit:
- Prismatic Dislocation Loops in Aluminum-Magnesium AlloysJournal of Applied Physics, 1971
- The anisotropic elastic energy of a rhombus-shaped dislocation loopPhilosophical Magazine, 1970
- The influence of a dilute magnesium addition on the growth ant shrinkage of dislocation loops in aluminiumPhilosophical Magazine, 1967
- Contrast from large prismatic dislocation loopsPhilosophical Magazine, 1966
- On the formation of {012} loops in quenched aluminiumPhilosophical Magazine, 1965
- The diffraction analysis of vacancy loops in quenched aluminium—1% magnesiumPhilosophical Magazine, 1963
- Diffraction contrast of electron microscope images of crystal lattice defects. III. Results and experimental confirmation of the dynamical theory of dislocation image contrastProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1962
- The growth of prismatic dislocation loops during annealingPhilosophical Magazine, 1960
- On The Behavior of Thermal Vacancies in Pure AluminumJournal of Applied Physics, 1960
- Continuous distributions of dislocations: a new application of the methods of non-Riemannian geometryProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1955