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Estonian Journal of Engineering
In situ tensile testing in SEM of Al-Al4C3 nanomaterials; pp. 247–254
PDF | doi: 10.3176/eng.2009.4.01

Michal Besterci, Oksana Velgosová, Jozef Ivan, Pavol Hvizdoš, Tibor Kvačkaj, Priit Kulu
The deformation and fracture mechanisms of Al-Al4C3 nanomaterials with 4 vol% of Al4C3 phase has been analysed using the technique “in situ tensile testing in SEM”. It has been shown that the deformation process causes break-up of large Al4C3 particles and decohesion of smaller ones. The final fracture path is influenced also by boundaries of nanograins, through which the principal crack propagates towards the sample exterior surface. Based on the experimental observations, a model of damage and fracture mechanisms has been proposed.

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