Studying the Thermally Activated Processes Operating during Deformation of hcp and bcc Mg-Li Metal-Matrix Composites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F21%3AN0000008" target="_blank" >RIV/26316919:_____/21:N0000008 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10438130
Result on the web
<a href="https://www.mdpi.com/2075-4701/11/3/473/htm" target="_blank" >https://www.mdpi.com/2075-4701/11/3/473/htm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/met11030473" target="_blank" >10.3390/met11030473</a>
Alternative languages
Result language
angličtina
Original language name
Studying the Thermally Activated Processes Operating during Deformation of hcp and bcc Mg-Li Metal-Matrix Composites
Original language description
Stress-relaxation tests were performed during plastic deformation at room temperature of three magnesium Mg-Li alloys reinforced with 10 vol% of short Saffil fibers. For comparison, the composite with the Mg matrix was studied. The time dependencies of the stress decrease were analyzed with the aim to determine the activation volume and the main types of thermally activated processes occurring during plastic flow. The Mg4Li matrix alloy exhibited the hcp structure, while the composite with the Mg12Li matrix alloy had the bcc structure. The third alloy, Mg8Li, combined both phases, hcp and bcc. The stress acting in the matrix was divided into two components: the internal stress and the effective stress. Activation volume and stress-sensitivity parameters were determined as a function of effective stress and strain. While the values of the activation volume depending on the effective stress lay on one "master" curve, the strain dependence was different for all materials. The main thermally activated process in the hcp structure was the dislocation motion in the noncompact planes, while in the bcc structure, massive recovery processes connected with an increase in dislocations were identified.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
METALS
ISSN
2075-4701
e-ISSN
2075-4701
Volume of the periodical
11
Issue of the periodical within the volume
3
Country of publishing house
CH - SWITZERLAND
Number of pages
13
Pages from-to
nestránkováno
UT code for WoS article
000633872600001
EID of the result in the Scopus database
2-s2.0-85102378179