Shear boundaries in lamellar TiAl
作者： Bimal K. Kad , Peter M. Hazzledine
DOI: 10.1080/09500839208229275
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摘要: Abstract Small-angle tilt boundaries and small-angle twist are familiar features of crystalline microstructures but shear much less well known. Shear may be composed cross-grids either edge or screw dislocations. This paper reports some observations on {111} planes in tetragonal TiAl which consist only In the electron microscope, look very similar to they differ that their two sets dislocations have same sign whereas with opposite signs. Asymmetric boundaries, different spacings, can described as a superposition symmetric boundary boundary. An extreme case is simple has just one set
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