〈110〉 Dislocation in Cubic Crystals
1971; American Institute of Physics; Volume: 42; Issue: 7 Linguagem: Inglês
10.1063/1.1660599
ISSN1520-8850
Autores Tópico(s)Aluminum Alloy Microstructure Properties
ResumoExact expressions for the displacement and stress components of a dislocation parallel to a 〈110〉 axis in a cubic crystal have been derived. For 〈110〉/{112} and 〈110〉/{111} dislocations, the stress components σxx(y=0), σyy(y=0), and σxy(x=0) are found to be nonzero. It was shown that σxy≠0 at x=0 has no effect on the stability of a vertical wall of edge dislocations. The energy factor K was computed for the dislocations in bcc, fcc, and diamond-cubic crystals. By comparison, the elastic energy of an edge dislocation on the {110} slip plane in bcc crystals is generally less than that on the {112} slip plane. The differences, however, are very small except in a few cases of highly anisotropic crystals such as Li, K, Na, and β-brass.
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