A Positron Study of Early Clustering in Al-Mg-Si Alloys
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10289129" target="_blank" >RIV/00216208:11320/14:10289129 - isvavai.cz</a>
Result on the web
<a href="http://10.4028/www.scientific.net/MSF.794-796.33" target="_blank" >http://10.4028/www.scientific.net/MSF.794-796.33</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.794-796.33" target="_blank" >10.4028/www.scientific.net/MSF.794-796.33</a>
Alternative languages
Result language
angličtina
Original language name
A Positron Study of Early Clustering in Al-Mg-Si Alloys
Original language description
Early stages of clustering in quenched Al-Mg-Si alloys during natural ageing were studied by positron annihilation lifetime spectroscopy utilizing its unique sensitivity to electron density differences in various atomic defects. Two different positron trapping sites could be identified, one related to a vacancy-type defect, the other to solute clusters. The first trap is deep, i.e. traps positrons irreversibly, the second shallow, from which positrons can escape, which creates the signature of a temperature-dependent positron lifetime. During the first 80 min of natural ageing, the vacancy-related contribution decreases, while the solute clusters increasingly trap positrons, thus reflecting their continuous growth and power to trap positrons. Coincidence Doppler broadening spectroscopy of the annihilation radiation shows that the annihilation sites are Si-rich after quenching but contain more Mg after 70 min.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-09436S" target="_blank" >GA13-09436S: Non-destructive mapping of spatial distribution of defects in highly strained materials</a><br>
Continuities
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
Article name in the collection
Materials Science Forum
ISBN
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ISSN
0255-5476
e-ISSN
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Number of pages
6
Pages from-to
33-38
Publisher name
Trans Tech Publications
Place of publication
Switzerland
Event location
Trondheim; Norway
Event date
Jun 15, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000348897900006