Comprehensive study of changes in the phase composition of copper-aluminum conductors during heating

Changes in the microstructural characteristics and phase composition of copper plated conductors CCA-20 in the temperature range of 100-600 °C were studied by XRD and SEM methods. Fiducial markers for determining the temperature of exposure to conductors are the appearance of the Al2Cu phase at the phase boundary of the conductor at temperatures above 300 °C and the existence of the Al4Cu9 phase in the temperature range of 300-400 °C.