Evolution of defects in copper deformed by high-pressure torsion

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10103809" target="_blank" >RIV/00216208:11320/11:10103809 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S1359645410008608" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1359645410008608</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.actamat.2010.12.028" target="_blank" >10.1016/j.actamat.2010.12.028</a>

Result language
angličtina
Original language name
Evolution of defects in copper deformed by high-pressure torsion
Original language description
Lattice defects in Cu deformed by high-pressure torsion (HPT) were investigated by positron annihilation spectroscopy (PAS) combined with transmission electron microscopy, X-ray diffraction (XRD) and Vicker''s microhardness (HV) measurements. The evolution of the microstructure during HPT processing was studied on samples subjected to various numbers of HPT revolutions using pressures of 2 and 4 GPa. Since strain in torsion deformation increases with the radial distance from the center of rotation, onecan expect a non-uniform microstructure across the sample diameter. To examine this, HV was measured at various distances from the center of the HPT-deformed sample and the microstructure at the center was compared with that at the periphery. It was found that HPT-deformed Cu contains a high density of dislocations and also small vacancy clusters formed by the agglomeration of deformation-induced vacancies. The center of the sample exhibits coarser grains, a slightly lower density of dis
Czech name
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Czech description
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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
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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

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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