Publication detail
Fatigue Behaviour of Ultrafine-grained Copper
BUKSA, M. KUNZ, L. SVOBODA, M. WANG, Q. ZHENG, M.
Czech title
Únavové vlastnosti ultrajemnozrnné mědi
English title
Fatigue Behaviour of Ultrafine-grained Copper
Type
conference paper
Language
en
Original abstract
The mechanical properties and fatigue behaviour of ultrafine-grained (UFG) materials during cyclic loading are by far not well described and understood. This paper presents experimental results of fatigue lifetime and cyclic plastic properties of UFG copper prepared by means of equal channel angular pressing (ECAP) technique. It has been observed that fatigue loading did not result in a substantial change of microstructure. In spite of this it has been shown that the cyclic stress-strain response changes qualitatively in dependence on the stress amplitude. The fatigue behaviour, cyclic plastic strain localization and structural stability are discussed.
Czech abstract
Mechanické vlastnosti a únavové chování ultrajemnozrnné mědi během cyklického zatěžování nejsou ještě zdaleka dobře popsány a pochopeny. Tento příspěvek prezentuje experimentální výsledky únavové životnosti a cyklických vlastností ultrajemnozrnné mědi připravené pomocí ECAP technologie. Cyklického namáhání nevedlo k podstatným změnám mikrostruktury. Navzdory tomu, cyklická napěťově-deformační odezva se kvalitativně mění v závislosti na amplitudě napětí.
English abstract
The mechanical properties and fatigue behaviour of ultrafine-grained (UFG) materials during cyclic loading are by far not well described and understood. This paper presents experimental results of fatigue lifetime and cyclic plastic properties of UFG copper prepared by means of equal channel angular pressing (ECAP) technique. It has been observed that fatigue loading did not result in a substantial change of microstructure. In spite of this it has been shown that the cyclic stress-strain response changes qualitatively in dependence on the stress amplitude. The fatigue behaviour, cyclic plastic strain localization and structural stability are discussed.
Keywords in English
Fatigue; ECAP; Ultrafine-grained structure; Copper
RIV year
2007
Released
25.01.2007
Publisher
University of Žilina
Location
Žilina - Súl'ov
ISBN
978-80-8070-639-5
Book
Semdok 2007
Pages from–to
5–8
Pages count
4
BIBTEX
@inproceedings{BUT24501,
author="Michal {Buksa} and Ludvík {Kunz} and Milan {Svoboda} and Qingjuan {Wang} and Maosheng {Zheng},
title="Fatigue Behaviour of Ultrafine-grained Copper",
booktitle="Semdok 2007",
year="2007",
month="January",
pages="5--8",
publisher="University of Žilina",
address="Žilina - Súl'ov",
isbn="978-80-8070-639-5"
}