Journal
SCRIPTA MATERIALIA
Volume 68, Issue 6, Pages 389-392Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.10.036
Keywords
High-cycle fatigue (HCF); Fatigue limits; Equa-channel angular pressing (ECAP); Stacking fault energy (SFE)
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Funding
- National Natural Science Foundation of China (NSFC) [50890173, 50931005, 51101162, 51201165]
- National Basic Research Program of China [2010CB631006]
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As the slip mode plays an important role in dislocation evolution and mechanical behavior, the effects of the slip mode on the high-cycle fatigue behaviors of ultrafine-grained (UFG) Cu and Cu-Zn alloys were evaluated. It is found that the fatigue limits can be improved largely by changing the slip mode to hinder dynamic recovery and recrystallization through the addition of Zn in comparison with UFG Cu with wavy-slip mode because of the serious strain localization and microstructural instability of the latter. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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