ULTRA-FINE GRAINED COPPER PREPARED BY HIGH-PRESSURE TORSION: A POSITRON ANNIHILATION STUDY OF MICROSTRUCTURE EVOLUTION AND LATERAL DISTRIBUTION OF DEFECTS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10105482" target="_blank" >RIV/00216208:11320/11:10105482 - isvavai.cz</a>
Result on the web
<a href="http://www.nanocon.cz/files/proceedings/nanocon_11/lists/papers/1260.pdf" target="_blank" >http://www.nanocon.cz/files/proceedings/nanocon_11/lists/papers/1260.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
ULTRA-FINE GRAINED COPPER PREPARED BY HIGH-PRESSURE TORSION: A POSITRON ANNIHILATION STUDY OF MICROSTRUCTURE EVOLUTION AND LATERAL DISTRIBUTION OF DEFECTS
Original language description
A defect study of ultra-fine grained (UFG) Cu prepared by high-pressure torsion (HPT) will be reported. HPT introduces a huge amount of defects (vacancies, dislocations) what makes HPT-made materials a challenge for positron annihilation spectroscopy (PAS) because of PAS non-destructivity and excellent sensitivity to open-volume defects. Thus, conventional PAS including positron lifetime (PLT) and Doppler broadening (DB) techniques was the main experimental tool. PAS was combined with transmission electron microscopy, X-ray diffraction and Vickers microhardness (HV) measurements. Lattice defects introduced by HPT were characterized first. A very high concentration of defects created during HPT deformation was observed and the two kinds of defects couldbe identified: dislocations and small vacancy clusters (microvoids). Because of a significant increase in imposed shear strain with radial distance, microstructure of a HPT-deformed sample at the centre is expected to differ from that at
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
NANOCON 2011, 3rd INTERNATIONAL CONFERENCE
ISBN
978-80-87294-27-7
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
231-237
Publisher name
TANGER Ltd.
Place of publication
Ostrava
Event location
Brno
Event date
Sep 21, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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