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Fatigue of ultrafine-grained copper
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SYSNO ASEP 0323184 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Fatigue of ultrafine-grained copper Title Únava ultrajemnozrnné mědi Author(s) Lukáš, Petr (UFM-A)
Kunz, Ludvík (UFM-A) RID, ORCID
Svoboda, Milan (UFM-A) RID, ORCIDNumber of authors 3 Source Title Sixth International Conference on Low Cycle Fatigue LCF6. - Berlin : Deutscher Verband fur Materialforschung und Prufung, 2008 Pages s. 295-305 Number of pages 11 s. Action International Conference on Low Cycle Fatigue /6./ Event date 08.09.2008-12.09.2008 VEvent location Berlin Country DE - Germany Event type WRD Language eng - English Country DE - Germany Keywords ultrafine-grained copper ; fatigue strength ; cyclic plasticity Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation This paper summarizes extensive investigation of fatigue properties and microstructure of ultrafine-grained (UFG) copper produced by equal-channel angular pressing. Coppers of three substantially different purities were investigated at room temperature and a medium purity copper was in addition investigated at temperatures of 103 K and 173 K. Cycling was carried out under stress control. Fatigue strength is independent of purity in LCF region, while in HCF and VHCF regions its dependence on purity is very strong. Moreover, the fatigue strength depends on temperature and on details of ECAP procedure. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2009
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