Sub-grain boundaries and dissociations of dislocations in yttrium iron garnet deformed at high temperatures
- 1 June 1979
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 39 (6), 693-708
- https://doi.org/10.1080/01418617908239300
Abstract
Sub-grain boundaries in YIG single crystals deformed at high temperatures (0·8-0·9 TM) have been studied by transmission electron microscopy. Dislocation networks form mainly by climb; they are formed from dislocations with α/2 〈111〉 Burgers vectors. Dislocation junctions with α 〈100〉 Burgers vectors are usually found in networks; however, junctions with α 〈110〉 Burgers vectors are occasionally observed. They are dissociated into two partial dislocations with collinear Burgers vectors and the resulting fault configuration has been shown to be one corresponding to climb.Keywords
This publication has 7 references indexed in Scilit:
- High temperature creep behaviour of nearly stoichiometric alumina spinelJournal of Materials Science, 1978
- Nonstoichiometry and electronic defects in yttrium iron garnetJournal of Solid State Chemistry, 1977
- Transmission electron microscopy determinations of dislocation Burgers vectors in plastically deformed yttrium iron garnet single crystalsJournal of Applied Physics, 1976
- Climb dissociation of dislocations in sapphire (α-Al2O3)Philosophical Magazine, 1976
- Possibility of stacking faults and dissociation of dislocations in the garnet structurePhysica Status Solidi (a), 1976
- Sous-joints de dislocations et dissociations dans le ferrite de nickel déformé plastiquement à 0,85 TFPhilosophical Magazine, 1976
- The structure and formation of dislocation networks in aluminium-magnesium alloysPhilosophical Magazine, 1967