Dislocation glide velocity in creep of Mg alloys derived from dip tests

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F09%3A00328187" target="_blank" >RIV/68081723:_____/09:00328187 - 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

Dislocation glide velocity in creep of Mg alloys derived from dip tests

Popis výsledku v původním jazyce

Creep generally results from a certain density of dislocations gliding at a certain velocity. In order to decouple the two quantities one needs information beyond the creep rate?stress?temperature relationship. Stress dip tests have been proposed to yield information on the athermal and the thermal components of creep stress. The athermal stress component is connected to the density of dislocations, the thermal stress component is effective in driving glide. Assuming simple relations between the stresscomponents and the density it is possible to derive the relation between dislocation velocity and effective stress which is needed to model the creep behavior on a microstructural basis. Results in the range of 473?673 K are presented for Mg of technicalpurity and the Mg-alloy AS21. The dislocation velocities obtained are compared with theoretical expressions modeling either solute drag, forest cutting, or prismatic glide.

Název v anglickém jazyce

Dislocation glide velocity in creep of Mg alloys derived from dip tests

Popis výsledku anglicky

Creep generally results from a certain density of dislocations gliding at a certain velocity. In order to decouple the two quantities one needs information beyond the creep rate?stress?temperature relationship. Stress dip tests have been proposed to yield information on the athermal and the thermal components of creep stress. The athermal stress component is connected to the density of dislocations, the thermal stress component is effective in driving glide. Assuming simple relations between the stresscomponents and the density it is possible to derive the relation between dislocation velocity and effective stress which is needed to model the creep behavior on a microstructural basis. Results in the range of 473?673 K are presented for Mg of technicalpurity and the Mg-alloy AS21. The dislocation velocities obtained are compared with theoretical expressions modeling either solute drag, forest cutting, or prismatic glide.

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%2F06%2F1354" target="_blank" >GA106/06/1354: Vliv rozhraní matrice a zpevňující fáze na pevnost a tepelné vlastnosti kompozitů s matricí Mg-Al-Ca</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

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Svazek periodika

510-511

Číslo periodika v rámci svazku

Sp. Iss.

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000266397800073

EID výsledku v databázi Scopus

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