Subgrain size in view of the composite model of dislocation structure.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F01%3A07013315" target="_blank" >RIV/68081723:_____/01:07013315 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Subgrain size in view of the composite model of dislocation structure.
Original language description
The polygonized subgrain structure of plastically deformed metals is treated as a heterogeneous dislocation structure in terms of the composite model, and relations of the mean subgrain size to the total dislocation density and to the applied stress areinvestigated. The analysis supports the simple proportionality between the subgrain size d and the reciprocal applied stress .sigma., i.e., d = KGb/.sigma. (K is a constant, G the shear modulus, and b the magnitude of the Burgers vector), corresponding to the principle of similitude. It suggests an interpretation of the highly dispersed values of K in different materials as a result of an influence of several parameters. The proportionality factor between d and .rho. -1/2 (.rho. is the total dislocationdensity) depends on the volume fraction of hard regions fH and takes into account that substructures with the same subgrain size can store different dislocation densities.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Project
<a href="/en/project/GA106%2F98%2F1369" target="_blank" >GA106/98/1369: Characteristics of dislocation structures and of their influence upon the heat-resistance of materials</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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