Přístupnostní navigace
E-application
Search Search Close
Publication detail
WANG, Q. XU, C. ZHENG, M. ZHU, J. BUKSA, M. KUNZ, L.
Original Title
Fatigue Property of UFG Cu by ECAP
English Title
Type
journal article - other
Language
Chinese
Original Abstract
The fatigue life and cyclic deformation behavior of UFG copper produced by equal channel angular pressing (ECAP) were studied and the changes of the grain size and the development of slip bands are observed by means of SEM electron back scattering diffraction and SEM, respectively. The result shows that the fatigue limit of the UFG copper corresponding to 107 cycles is 153 MPa which is the double of fatigue limit of the coarse grained (CG) copper. Cyclic softening occurs in the low-cycle fatigue region whereas stable cyclic behavior or even cyclic hardening occurs in the high-cycle region. Persistent slip bands (PSB)-like shear bands (SBs) are approximately parallel to the shearing plane of last pressing. The formation of SBs and grain boundary sliding are the main factor causing crack nucleation as well as fatigue failure.
English abstract
Keywords
equal channel angular pressing (ECAP), ultrafine-grained copper, fatigue limit, shear bands
Key words in English
Authors
WANG, Q.; XU, C.; ZHENG, M.; ZHU, J.; BUKSA, M.; KUNZ, L.
RIV year
2007
Released
1. 5. 2007
Location
Čína
ISBN
0412-1961
Periodical
ACTA METALLURGICA SINICA
Year of study
43
Number
5
State
People's Republic of China
Pages from
498
Pages to
502
Pages count
BibTex
@article{BUT44578, author="Qingjuan {Wang} and Changzheng {Xu} and Maosheng {Zheng} and Jiewu {Zhu} and Michal {Buksa} and Ludvík {Kunz}", title="Fatigue Property of UFG Cu by ECAP", journal="ACTA METALLURGICA SINICA", year="2007", volume="43", number="5", pages="498--502", issn="0412-1961" }