Dissociated grain boundary dislocations in some incoherent twin boundaries
- 1 June 1986
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 53 (6) , 863-886
- https://doi.org/10.1080/01418618608245297
Abstract
It is shown that partial grain boundary dislocations (GBDs) form two of the three independent arrays of secondary GBDs in incoherent Σ3 boundary facets on {421}/{1085} planes in a f.c.c. Cu+6at%Si alloy. Two states of rigid-body displacement between the grains exist at these interfaces and these rigid-body displacements, together with the Burgers vectors of the partial GBDs, arc determined. The difference in grain boundary energy between the two states of rigid-body displacement is estimated as 2·5 mJ m−2 from the determined Burgers vectors and the measured separations of the partial GBDs.Keywords
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