Mechanics of Ductile Shear Failure of Amorphous Alloy Ribbons

Structural Changes in Deformed Soft Magnetic Ni-Based Metallic Glass

“…Similar phenomena were also observed for other metallic glasses [6,10]. This is contrary to the expectation that the excess free volume is generated during plastic deformation due to temperature rise in shear bands and the appearing of the liquid-like layer [4]. Bhowmick et al [6] concluded that one of the possible explanations can be the condensation of the excess free volume generated during prior-plastic deformation into nanovoids.…”

“…shear bands that propagate under adiabatic conditions and the high local heating is observed [4]. In the locally heated and rapid cooled shear band regions a higher amount of free volume should be present.…”

Influence of Plastic Deformation on Nanocrystallization of Finemet Alloy

“…The stored elastic energy releases by local heating of the material in the thin layer of the shear band. At the final stage of deformation the manifestations of local heating are observed as dimples or needles at fracture surface of failed metallic glasses [4]. It was observed that the high amount of plastic deformation energy introduced by intensive milling leads to partial or full crystallization of amorphous alloys [5,6].…”

Influence of Plastic Deformation on Devitrification of Fe_{73.5}Nb_{3}Cu_{1}Si_{13.5}B_{9} Amorphous Alloy

“…During the heating the temperature inside shear bands overcomes the glass transition temperature. This was conrmed by the examination of fracture surfaces [1,2] or by direct measurement of the temperature near the shear bands [3]. Intensive plastic deformation stored into the amorphous structure by long time milling tends to the partial or total crystallization of metallic glasses [4,5].…”