The structural mechanisms of fracture in amorphous metallic alloys

The analysis of the structural mechanisms and conditions of fracture in the amorphous metallic alloys (AMA) on the shift bands and systematization of the mechanisms of the brittle, quasi-brittle and viscous fracture of these materials is carried out. The following basic mechanisms of the AMA fracture are separated: 1) the brittle fracture: the crack plane is perpendicular to the extension axis; 2) the quasi-brittle fracture: the crack and shift band combined development; formation of the secondary bands in the crack apex; 3) the combined brittle-viscous fracture by the shift bands: formation of the pores in the shift band, combined by the brittle cracks or development of the main viscous crack on the account of the brittle cracks formation; 4) the viscous fracture by the shift band on the account of the pores birth, growth and unification; the brittle fracture by the shift bands on the account of development of the viscous crack front instability