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

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dislocation glide velocity in creep of Mg alloys derived from dip tests
Original language description
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.
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%2F06%2F1354" target="_blank" >GA106/06/1354: Effect of reinforcement-matrix interface on the strength and thermal properties of Mg-Al-Ca alloy matrix composites</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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