On definitions and assumptions in the dislocation theory for solid solutions

A recent paper criticized the standard treatment of Cottrell atmospheres, relevant to solid-solution hardening. We show that the treatment in current texts is correct within the standard assumptions of dislocation theory. Nonlinear treatments of the atmosphere are discussed. We also show that no cur...

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Bibliographic Details
Published in:Philosophical magazine (Abingdon, England) England), 2014-09, Vol.94 (27), p.3162-3169
Main Author: Hirth, J.P.
Format: Article
Language:English
Subjects:
Atmospheres
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Defects and impurities in crystals
microstructure
dislocation theory
Dislocations
Exact sciences and technology
Linear defects: dislocations, disclinations
Materials science
Nonlinearity
Physics
Screening
Solid solution, precipitation, and dispersion hardening
aging
Solid solutions
solute atmospheres
Strain
Structure of solids and liquids
crystallography
Texts
Treatment of materials and its effects on microstructure and properties
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Summary:A recent paper criticized the standard treatment of Cottrell atmospheres, relevant to solid-solution hardening. We show that the treatment in current texts is correct within the standard assumptions of dislocation theory. Nonlinear treatments of the atmosphere are discussed. We also show that no current theory of such atmospheres includes complete nonlinear screening of the dislocation strain field.
ISSN:1478-6435
1478-6443
DOI:10.1080/14786435.2014.951707