Diffusion induced by grain boundaries: a SHE model
نویسندگان
چکیده
منابع مشابه
Dislocation interactions mediated by grain boundaries
The dynamics of dislocation assemblies in deforming crystals indicates the emergence of collective phenomena, intermittent fluctuations and strain avalanches. In polycrystalline materials, the understanding of plastic deformation mechanisms depends on grasping the role of grain boundaries on dislocation motion. Here the interaction of dislocations and elastic, lowangle grain boundaries is studi...
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We postulate that almost any motion of an interface between two crystals can produce a coupled tangential motion of the two crystals relative to each other which is proportional to the normal motion of the interface. Such translations can produce grain rotations; the special case of the rotations of shrinking included circular cylindrical grains which increase misorientation, as seen in the mol...
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The conditions for structural transitions at the core of a grain boundary separating two crystals was investigated with a diffuse interface model that incorporates disorder and crystal orientation Kobayashi et al., Physica D 140, 141 2000 . The model predicts that limited structural disorder near the grain boundary core can be favorable below the melting point. This disordered material is a pre...
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ژورنال
عنوان ژورنال: Communications in Mathematical Sciences
سال: 2004
ISSN: 1539-6746,1945-0796
DOI: 10.4310/cms.2004.v2.n1.a6