Journal ArticleDOI
Dislocation Models of Crystal Grain Boundaries
W. T. Read,William Shockley +1 more
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In this article, the authors investigated the energies and motions of grain boundaries between two crystallites using the dislocation model of grain boundary and provided a quantitative expression for energy per unit area for small angles.Abstract:
The energies and motions of grain boundaries between two crystallites are investigated theoretically using the dislocation model of grain boundaries. Quantitative predictions made for simple boundaries for cases in which the plane of the boundary contains the axis of relative rotation of the grains appear to agree with available experimental data. The quantitative expression for energy per unit area for small angles is approximately $[\frac{\mathrm{Ga}}{4\ensuremath{\pi}(1\ensuremath{-}\ensuremath{\sigma})}]\ensuremath{\theta}[A\ensuremath{-}\mathrm{ln}\ensuremath{\theta}]$ where $G$ is the rigidity modulus, $a$ the lattice constant, $\ensuremath{\sigma}$ Poisson's ratio, $\ensuremath{\theta}$ the relative rotation and $A$ approximately 0.23. Grain boundaries of the form considered may permit intercrystalline slip and may act as stress raisers for the generation of dislocations.read more
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Journal ArticleDOI
Current issues in recrystallization: a review
Roger D. Doherty,D.A. Hughes,F.J. Humphreys,John J. Jonas,D. Juul Jensen,Michael E. Kassner,Wayne E. King,Terry R. McNelley,H.J. McQueen,Anthony D. Rollett +9 more
TL;DR: The current understanding of the fundamentals of recrystallization is summarized in this paper, which includes understanding the as-deformed state, nucleation and growth, the development of misorientation during deformation, continuous, dynamic, and geometric dynamic recystallization, particle effects, and texture.
Journal ArticleDOI
The structure of high-angle grain boundaries
TL;DR: In this paper, a superimposed dislocation network is proposed for the cubic system, which is a natural extension of previous dislocation models and models based on coincidence relationships, and explains many of the observed properties of grain boundaries.
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The Continuum Theory of Lattice Defects
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Journal ArticleDOI
Controlling Mineral Morphologies and Structures in Biological and Synthetic Systems
Fiona C. Meldrum,Helmut Cölfen +1 more
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Journal ArticleDOI
Electronic transport in polycrystalline graphene
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