Microstructure stability of ultra-fine grained magnesium alloy AZ31 processed by extrusion and equal-channel angular pressing (EX-ECAP)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10286337" target="_blank" >RIV/00216208:11320/14:10286337 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.matchar.2014.05.013" target="_blank" >http://dx.doi.org/10.1016/j.matchar.2014.05.013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchar.2014.05.013" target="_blank" >10.1016/j.matchar.2014.05.013</a>
Alternative languages
Result language
angličtina
Original language name
Microstructure stability of ultra-fine grained magnesium alloy AZ31 processed by extrusion and equal-channel angular pressing (EX-ECAP)
Original language description
Thermal stability of the ultra-fine grained (UFG) microstructure of magnesium AZ31 alloy was investigated. UFG microstructure was achieved by a combined two-step severe plastic deformation process: the extrusion (EX) and subsequent equal-channel angularpressing (ECAP). This combined process leads to refined microstructure and enhanced microhardness. Specimens with UFG microstructure were annealed isochronally at temperatures 150-500 degrees C for 1 h. The evolution of microstructure, mechanical properties and dislocation density was studied by electron backscatter diffraction (EBSD), microhardness measurements and positron annihilation spectroscopy (PAS). The coarsening of the fine-grained structure at higher temperatures was accompanied by a gradualdecrease of the microhardness and decrease of dislocation density. Mechanism of grain growth was studied by general equation for grain growth and Arrhenius equation. Activation energies for grain growth were calculated to be 115, 33 and 1
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GA13-13616S" target="_blank" >GA13-13616S: Evaluation of Elastic Properties of Materials Processed by Severe Plastic Deformation</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Characterization
ISSN
1044-5803
e-ISSN
—
Volume of the periodical
94
Issue of the periodical within the volume
-
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
69-79
UT code for WoS article
000339696000009
EID of the result in the Scopus database
—