Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/34169
Title: | Influence of specimen orientation on fatigue crack growth in 7050-T7451 and 2050-T8 aluminium alloys |
Author: | Jesus, J. S. Antunes, F. V. Prates, P. Branco, R. Antunes, P. V. Borrego, L. P. Neto, D. M. |
Keywords: | Fatigue crack growth AA7050-T7451 AA2050-T8 L-T and S-T orientations Microstructure |
Issue Date: | 14-Jul-2022 |
Publisher: | Elsevier |
Abstract: | The effect of L-T and S-T orientations on FCGR is here in studied in 7050-T7451 and 2050-T8 aluminum alloys. The Low-cycle fatigue tests and hardness measurements have shown that specimen orientation has a minor effect on material plastic hardening. Lower FCG rates are obtained for both materials in the L-T orientation, which can be associated to the resistance at grain boundaries. The larger cyclic plastic zone attained in the L-T direction leads to an increase of the plasticity inducing crack closure. Crack deflection observed for L-T direction also affects the FCGR due to roughness inducing crack closure, longer crack path and lower effective ΔK. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/34169 |
DOI: | 10.1016/j.ijfatigue.2022.107136 |
ISSN: | 0142-1123 |
Appears in Collections: | TEMA - Artigos DEM - Artigos ESTGA - Artigos |
Files in This Item:
File | Description | Size | Format | |
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1-s2.0-S0142112322003929-main.pdf | 11.22 MB | Adobe PDF |
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