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|Title:||Influence of specimen orientation on fatigue crack growth in 7050-T7451 and 2050-T8 aluminium alloys|
|Author:||Jesus, J. S.|
Antunes, F. V.
Antunes, P. V.
Borrego, L. P.
Neto, D. M.
|Keywords:||Fatigue crack growth|
L-T and S-T orientations
|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.|
|Appears in Collections:||TEMA - Artigos|
DEM - Artigos
ESTGA - Artigos
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|1-s2.0-S0142112322003929-main.pdf||11.22 MB||Adobe PDF|
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