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Fizika Metallov i MetallovedenieVolume 94, Issue 3, 2002, Pages 5-10

Theory of diffusional phase transformations in nanocrystalline alloys upon severe plastic deformation: 1. The stage of the formation of concentration inhomogeneities near grain boundaries(Article)

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  • Ural State Prof. Pedag. Univ., Ekaterinburg, 620012, Russian Federation

Abstract

The initial stage of the decomposition of a nanocrystalline solid solution under the action of a flux of nonequilibrium vacancies induced by severe plastic deformation is considered theoretically. A solution to the nonlinear diffusion problem of the formation of a decomposition zone is found within the framework of the model of a nonideal solid solution and using the method of splicing asymptotic expansions. Optimum conditions for the decomposition effect are derived and analyzed.

Indexed keywords

Engineering controlled terms:AlloysDecompositionGrain boundariesMathematical modelsOptimizationPhase transitionsPlastic deformationSolid solutions
Engineering uncontrolled terms:Vacancies
Engineering main heading:Nanostructured materials
  • ISSN: 00153230
  • CODEN: FMMTA
  • Source Type: Journal
  • Original language: Russian
  • Document Type: Article

  Gapontsev, V.L.; Ural State Prof. Pedag. Univ., Russian Federation
© Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

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