Disconnections in tilt walls

The rotation associated with a tilt wall is derived from elastic displacement fields and shown to agree with the tilt deduced from Burgers circuits. Transmission of a dislocation through a boundary results in a disconnection forming at the boundary and different mechanisms are proposed for the remov...

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Bibliographic Details
Published in:Acta materialia 2006-09, Vol.54 (16), p.4237-4245
Main Authors: Hirth, J.P., Pond, R.C., Lothe, J.
Format: Article
Language:English
Subjects:
Applied sciences
Bands
Boundaries
Camber
Circuits
Disconnections
Disengaging
Dislocations
Displacement
Exact sciences and technology
Grain boundaries
Metals. Metallurgy
Tilt
Walls
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Summary:The rotation associated with a tilt wall is derived from elastic displacement fields and shown to agree with the tilt deduced from Burgers circuits. Transmission of a dislocation through a boundary results in a disconnection forming at the boundary and different mechanisms are proposed for the removal of a disconnection from low- and high-angle boundaries. The results have implications for the formation of kink bands, deformation bands, and compound twins as well as for the appropriate rotation matrix to be used in predicting martensite habit planes.
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2006.05.017