An ultrasonic internal friction study of ultrafine-grained AZ31 magnesium alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10287618" target="_blank" >RIV/00216208:11320/15:10287618 - isvavai.cz</a>
Alternative codes found
RIV/61388998:_____/15:00440339 RIV/68407700:21340/15:00222595
Result on the web
<a href="http://dx.doi.org/10.1007/s10853-014-8641-1" target="_blank" >http://dx.doi.org/10.1007/s10853-014-8641-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10853-014-8641-1" target="_blank" >10.1007/s10853-014-8641-1</a>
Alternative languages
Result language
angličtina
Original language name
An ultrasonic internal friction study of ultrafine-grained AZ31 magnesium alloy
Original language description
Internal friction in ultrafine-grained AZ31 magnesium alloy is investigated by resonant ultrasound spectroscopy. It is shown that the internal friction significantly increases at elevated temperatures (greater than or similar to 100 degrees C), and that this increase can be attributed to grain boundary sliding (GBS). The evolution of this phenomenon with grain refinement is studied by comparing the results obtained for an extruded material and for materials after additional one, two, and four passes of equal channel angular pressing. It is observed that the activation energy for diffusive GBS significantly decreases with decreasing grain size, and so does also the threshold temperature above which this internal friction mechanism is dominant. The results prove that the ultrafine-grained AZ31 alloys exhibit diffusive GBS at temperatures close to the ambient temperature, which is an interesting finding with respect to the possible applications of these alloys in superplastic forming technologies.
Czech name
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Czech description
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Classification
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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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
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Materials Science
ISSN
0022-2461
e-ISSN
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Volume of the periodical
50
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
808-818
UT code for WoS article
000345407900032
EID of the result in the Scopus database
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