Grain Boundary Diffusion and Properties of Nanostructured Materials
The authors examine the main relationships of the process of grain boundary diffusion in bicrystals, coarse-grained polycrystals and nanostructured materials. The results of investigations of diffusion-related processes of recovery, recystallisation and development of plastic deformation in creep, static and cyclic loading in bulk nanostructured materials produced by high-intensity plastic deformation are presented.
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activation energy Al2O3 composite alloys annealing temperature approximately atoms characterised coarse-grained titanium coefficient of grain creep rate decrease deformation by torsion density dependence detected diffusion coefficient diffusion flows DIGM dislocations effect of severe electrical resistance elongation energy of grain equal-channel angular pressing equation examination flow curves flow stress formation grain boundary diffusion grain boundary sliding grain growth increase intermetallics investigated Kolobov Yu.R lattice mean grain mechanical properties Metallurgiya method microhardness microstructure migration Moscow nanocrystalline nanostructured composite nanostructured condition nanostructured copper nanostructured materials nanostructured nickel nanostructured titanium Ni3Al parameters particles plastic torsional deformation polycrystals pre-recrystallisation annealing produced by severe self-diffusion severe plastic deformation severe plastic torsional shows solid solution stage strain hardening strain rate structure subjected to severe superplastic behaviour superplastic deformation surface temperature range tensile loading ultrafine grain ultrasound ultrasound deformation Valiev R.Z. values volume diffusion yield limit
Page 8 - G is the shear modulus, b is the Burgers vector, v is Poisson's ratio, and t is the distance between the two dislocations.
Page ix - The basis of the book is represented by the results, obtained by scientists at the Institute of Physics of Strength and Materials Science of the Siberian Division of the Russian Academy of Sciences and the Siberian Physical-Technical Institute under the supervision of Prof.
Page 11 - ... the specimens with a diameter of 10 mm and a thickness of 0.2 mm it is 7.