On the formation of steps on the surface under the rolling of an amorphous Al87Ni8La5 alloy

摘要

? 2023The shear bands formed under rolling in an amorphous alloy and their relation with the steps on the surface have been investigated. The studies were carried out by scanning, transmission electron, and atomic force microscopy. It was shown that a shear band began on a surface step. The thickness of the shear band was about 10 nm and varied from place to place. Secondary shear bands were found, which were located at an angle of 70 ° to the shear band come out to the surface. The regions of the shear band had light and dark contrast, which indicated a change in the density of an amorphous phase along the shear band. The steps on the surface had a complex shape and consisted of elementary steps. The thickness of the elementary steps corresponded to that of the shear band.