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Surface Morphology and Structure of Deformed Amorphous Alloys

Student: Bogdan Mironchuk

Supervisor: Aleksandr Aronin

Faculty: Faculty of Physics

Educational Programme: Physics (Master)

Year of Graduation: 2021

The development and implementation of new and promising materials is a very important and continuous process. Thanks to this process, it becomes possible to build more and more unique structures, create promising devices. Some amorphous and partially crystalline alloys are materials that have a set of good physical properties, such as high strength and hardness, corrosion resistance, low coercive force, and high magnetic permeability. This work is devoted to the study of the mechanical properties of metal glasses. The deformation of amorphous alloys at room temperature usually proceeds inhomogeneously, and is carried out by the propagation of shear bands. In the process of deformation, the structure of the amorphous phase changes, the fraction of free volume in the shear band increases, and the rate of diffusion mass transfer increases. The degree of change in the structure in the shear band depends on the type and conditions of deformation. The aim of this work was to study the effect of various types of deformation (HPT, rolling) on the surface morphology and the formation of nanocrystals in amorphous alloys Al87Ni8La5 and Fe76Si13B11.

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