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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 12/2017

02.11.2017

Cyclic Elastoplastic Performance of Aluminum 7075-T6 Under Strain- and Stress-Controlled Loading

verfasst von: Dylan Agius, Chris Wallbrink, Kyriakos I. Kourousis

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 12/2017

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Abstract

Elastoplastic investigations of aerospace aluminum are important in the development of an understanding of the possible cyclic transient effects and their contribution to the material performance under cyclic loading. Cyclic plasticity can occur in an aerospace aluminum component or structure depending on the loading conditions and the presence of external and internal discontinuities. Therefore, it is vital that the cyclic transient effects of aerospace aluminum are recognized and understood. This study investigates experimentally the cyclic elastoplastic performance of aluminum 7075-T6 loaded in symmetric strain control, and asymmetric stress and strain control. A combination of cyclic hardening and softening was noticed from high strain amplitude symmetric strain-controlled tests and at low stress amplitude asymmetric stress-controlled tests. From asymmetric strain control results, the extent of mean stress relaxation depended on the size of the strain amplitude. Additionally, saturation of the ratcheting strain (plastic shakedown) was also found to occur during asymmetric stress control tests. The experimental results were further analyzed using published microstructure research from the past two decades to provide added explanation of the micro-mechanism contribution to the cyclic transient behavior.
Vorheriger Artikel Titanium Alloys Thin Sheet Welding with the Use of Concentrated Solar Energy
Nächster Artikel Corrosion Protection of Phenolic-Epoxy/Tetraglycidyl Metaxylediamine Composite Coatings in a Temperature-Controlled Borax Environment

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Metadaten
Titel
Cyclic Elastoplastic Performance of Aluminum 7075-T6 Under Strain- and Stress-Controlled Loading
verfasst von
Dylan Agius
Chris Wallbrink
Kyriakos I. Kourousis
Publikationsdatum
02.11.2017
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 12/2017
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-017-3047-2

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