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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F98%2F1369" target="_blank" >GA106/98/1369: Zákonitosti dislokačních struktur a jejich vlivů na žárupevnost materiálů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Science and Engineering. A

ISSN

0921-5093

e-ISSN

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Svazek periodika

297

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

281-285

Kód UT WoS článku

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EID výsledku v databázi Scopus

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