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An overview: fatigue behaviour of ultrafine-grained metals and alloys (in issue on fatigue lifetime prediction of metals based on microstructural behaviour)

Höppel, H.W., Kautz, M., Xu, C., Murashkin, M., Langdon, T.G., Valiev, R.Z. and Mughrabi, H. (2006) An overview: fatigue behaviour of ultrafine-grained metals and alloys (in issue on fatigue lifetime prediction of metals based on microstructural behaviour) International Journal of Fatigue, 28, (0142-1123), pp. 1001-1010. (doi:10.1016/j.ijfatigue.2005.08.014).

Record type: Article

Abstract

The objectives of the present study were to assess and to optimize the fatigue behaviour in strain-controlled tests of different ultrafine-grained (UFG) metals and alloys (Cu, Al, AA6061, ?-brass) prepared by equal channel angular pressing (ECAP). Quite generally, the UFG materials investigated exhibited shorter fatigue lives in the low-cycle fatigue (LCF) regime than corresponding conventional grain (CG) size specimens. In all cases, the fatigue lives could be enhanced appreciably by a suitable heat treatment following ECAP without, however, paralleling the fatigue lives of the CG specimens. The microstructural reasons for this behaviour are discussed, and a microstructure-based fatigue life model for UFG materials is presented.

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Published date: 2006
Keywords: ultrafine-grained materials, AA6061, ?-brass, copper, aluminium, ECAP, fatigue life, annealing, modelling
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 43661
URI: http://eprints.soton.ac.uk/id/eprint/43661
ISSN: 0142-1123
PURE UUID: 99722665-3b3e-494d-9da6-8024ada6a0ba
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 25 Jan 2007
Last modified: 17 Jul 2017 15:18

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Contributors

Author: H.W. Höppel
Author: M. Kautz
Author: C. Xu
Author: M. Murashkin
Author: T.G. Langdon ORCID iD
Author: R.Z. Valiev
Author: H. Mughrabi

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