Copper Alloys - Early Applications and Current Performance - Enhancing Processes

0389363 - ÚFM 2013 RIV HR eng M - Monography Chapter
Kunz, Ludvík
Mechanical Properties of Copper Processed by Severe Plastic Deformation.
Copper Alloys - Early Applications and Current Performance - Enhancing Processes. Rijeka: InTech, 2012 - (Collini, L.), s. 93-126. ISBN 978-953-51-0160-4
R&D Projects: GA ČR GAP108/10/2001
Keywords : copper * ultrafinegrained structure * fatigue properties * localization of cyclic plasticity
Subject RIV: JL - Materials Fatigue, Friction Mechanics

The chapter 5 of the book briefly summarises basic fatigue properties of conventionally grained copper. However, the main concern is to present and discuss the mechanical behaviour of ultrafine-grained Cu prepared by one of the SPD methods, namely by equal channel angular pressing. This method enables the production of the UFG material in bulk. The emphasis is put on the fatigue properties and their relation to the UFG microstructure. Discussion of recent, - and, in some cases inconsistent - results on UFG Cu published in literature, is accentuated. This is an issue of the relation of the cyclic softening/hardening to the stability of UFG structure, the influence of mode of fatigue loading on the dynamic grain coarsening, related fatigue life, the mechanism of the cyclic slip localization and initiation of fatigue cracks.
Permanent Link: http://hdl.handle.net/11104/0218257