Abstract
In the present work the deformation of the Al-12Al₄C₃ system was analysed by "in-situ tensile test in SEM" and the model of fracture mechanism was suggested.
It has been shown that during tensile strain the first cracks appeared due to decohesion of matrix-particle interphase. The further stress increase causes the cracks development into the specimen at the same time the large cracked particles contribute to the fracture process. The path of final fracture was formed preferably in the loading direction in the rows of Al₄C₃ and Al₂O₃ particles. Fracture surface was transcrystalline ductile.

Key words
model of fracture mechanism, in-situ tensile stress in SEM, Al-12Al₄C₃ materials

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