The Change in the Radius of a First Coordination Sphere in Amorphous Alloys under Deformation

• Published in: Physics of metals and metallography Vol. 124; no. 7; pp. 698 - 709
• Main Authors: Abrosimova, G. E., Astanin, V. V., Volkov, N. A., Gunderov, D. V., Postnova, E. Yu, Aronin, A. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2023; Springer; Springer Nature B.V
• Subjects: Amorphous alloys; Chemistry and Materials Science; Comparative analysis; Deformation; Diffraction; Diffusion; Edge dislocations; Materials Science; Metallic glasses; Metallic Materials; Phase Transformations; Physical properties; Shear bands; Specialty metals industry; Structure; X-rays; deformation; free volume; shear bands; amorphous alloys
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X23600859

Changes in the structure of amorphous alloys under deformation by high-pressure torsion, multiple-pass rolling, and pressure treatment have been studied using X-ray diffraction and scanning electron microscopy. It has been shown that under all types of deformation, shear bands are formed in amorphous alloys, which are regions of lower density compared to a surrounding undeformed amorphous matrix. Shear bands are regions of an increased free volume; the formation of bands results in steps occurring on the surface of samples. The number of shear bands and the surface morphology of deformed amorphous alloys are determined by the deformation type and physical properties of a material.