Download A Tribute to F.R.N. Nabarro by John P. Hirth PDF

By John P. Hirth

New types for dislocation constitution and movement are offered for nanocrystals, nucleation at grain barriers, stunned crystals, interphase interfaces, quasicrystals, advanced buildings with non-planar dislocation cores, and colloidal crystals. A assessment of experimentally validated major beneficial properties of the magnetoplastic impact with their actual interpretation explains many assorted result of this kind. The version has many capability functions for forming techniques stimulated by way of magnetic fields.

• Dislocation version for the magnetoplastic effect
• New mechanism for dislocation nucleation and movement in nanocrystals
• New types for the dislocation constitution of interfaces among crystals with differing crystallographic structure
• A unified view of dislocations in quasicrystals, with a brand new version for dislocation motion
• A basic version of dislocation habit in crystals with non-planar dislocation cores
• Dislocation homes at excessive velocities
• Dislocations in colloidal crystals

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To check for possible sources of Williamson–Hall anisotropy, a certain lattice dislocation content has been introduced in the nc Al MD samples by deforming the configurations to large strains followed by short unloading times during which the dislocations could not all be absorbed in the GBs [114]. Fig. 20 displays the resulting Williamson–Hall plot arising from four samples (where DIS0 is the as-prepared sample and DIS1 to DIS3 contain an increasing lattice dislocation content due to the increasing amount of plastic deformation experienced by the sample).

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