Abstract
Damage evolution and mechanisms of deformation have been investigated in the 3rd generation AA2050 aluminium alloy.This Al-Li-Cu alloy is characterised by the presence of second-phase particles which are preferred sites for damage nucleation. Digital Image Correlation (DIC) and high resolution microscopy have been used to establish a correlation between strain distribution and particles/voids volume fraction along the gauge length of tensile specimens. Results show that damage nucleates at about 11% applied strain with a strain to fracture of about 35%.
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