Effect of friction stir processing on the fatigue properties of a Zr-modified 2014 aluminium alloy
- INFM-Department of Ingegneria dell'Innovazione, Engineering Faculty, University of Lecce, Via per Arnesano, I-73100-Lecce (Italy)
The fatigue properties of a Zr-modified 2014 aluminium alloy resulting from friction stir processing (FSP) were analysed in the present study. The sheets were processed parallel to the extrusion direction; the tensile mechanical properties were evaluated at room temperature in the longitudinal direction with respect to the processing one in order to observe the differences from the parent material as a function of the strong grain refinement due to the friction stir process. The fatigue endurance (S-N) curve of the FSP material was obtained by using a resonant electro-mechanical testing machine under constant loading control up to 250 Hz with sine wave loading. The cyclic fatigue tests were conducted in the axial total stress-amplitude control mode with R = {sigma} {sub min}/{sigma} {sub max} = 0.1. The microstructure resulting from the FSW process was studied by employing optical and scanning electron microscopy.
- OSTI ID:
- 20889842
- Journal Information:
- Materials Characterization, Vol. 57, Issue 2; Other Information: DOI: 10.1016/j.matchar.2005.12.015; PII: S1044-5803(06)00008-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
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