On the Use of Positron Flaw Detection in Monitoring the Atomic-Electronic and Defect Structure of Deformed Metal Mixtures

This article considers methodological issues of applying positron annihilation (PA) spectroscopy in monitoring the atomic-electronic and defect structure of deformed metallic mixtures. This method, like many other complex methods for determining the atomic-electronic structure, structure and characteristics of defects, requires specialists not only to carry out the measurements themselves, but also to analyze the initial experimental data. On the other hand, to understand the results of annihilation spectroscopy and their significance in terms of material properties, no special training is required, except for several basic concepts that are presented in this paper. This paper describes the method using the example of studying the atomic-electronic properties of heavily deformed mixtures of aluminum and copper powders. It is shown that the positron annihilation method is extremely sensitive to the vacancy composition of deformed powders associated with their chemical activity.