Application of the Instrumented Nanoindentation Method to Evaluating the Behavior of the Mechanical Properties of a Fe-Ga Alloy with Increasing Gallium Content

摘要

Five Fe-Ga samples with gallium content ranging from 13.2 to 19.7 at. % are studied in this paper. X-ray phase analysis is carried out for the certification of the phase composition of the initial samples; in order to find differences in the chemical composition inside the grains and in the near-border areas, elementary analysis of individual structure sections is carried out. It is demonstrated that in this alloy there is a distinct brittle fracture. To study the mechanical properties and to reveal their behavior with increasing Ga content, it is proposed to use a nanoindentation system. An increase in microhardness and a decrease in the plastic work of indentation with increasing Ga content are shown.