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  Estonian Journal of Engineering

ISSN 1736-7522 (electronic)  ISSN 1736-6038  (print)

 An international scientific journal
Formerly: Proceedings of the Estonian Academy of Sciences Engineering
(ISSN 1406-0175)
Published since 1995

Estonian Journal of Engineering

ISSN 1736-7522 (electronic)  ISSN 1736-6038  (print)

 An international scientific journal
Formerly: Proceedings of the Estonian Academy of Sciences Engineering
(ISSN 1406-0175)
Published since 1995

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In situ tensile testing in SEM of Al-Al4C3 nanomaterials; pp. 247–254

(Full article in PDF format) doi: 10.3176/eng.2009.4.01


Authors

Michal Besterci, Oksana Velgosová, Jozef Ivan, Pavol Hvizdoš, Tibor Kvačkaj, Priit Kulu

Abstract

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.

Keywords

dispersion strengthened Al, nanomaterials, in situ tensile testing in SEM, model of the fracture mechanism.

References

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