Evolution of selected structural and mechanical parameters with crystallization of Fe_(97.45)Si_(2.55) amorphous alloy

摘要

From literature data it can be concluded that physical properties of the amorphous alloys depend on the type of chemical composition. Further modification physical properties of these alloys can be achieved by a proper heat treatment process and structural changes of material. In the paper the experimental results of the Fe_(97.45)Si_(2.55) amorphous alloy are presented with major attention to determine an influence of isothermal annealing (various temperatures and time periods) on the changes of selected structural parameters in the process of primary crystallization. Hence, lattice constant of crystallized phase, a, root-mean-square micro-strains, RMS, and coherent block sizes, D, were established as the structural parameters. These structural characteristics were determined using an X-ray analysis. As a mechanical parameter, we considered a micro-hardness of the heat treated alloy.