MODELING OF COPPER WIRE MICROSTRUCTURE EVOLUTION DURING DEFORMATION BY A NEW COMBINED METHOD

In this work, the influence of the combined method of radialshift broaching and subsequent drawing on the evolution of the microstructure of copper wire by the Johnson–Mehl–Avrami–Kolmogorov (Johnson–Mehl–Avrami–Kolmogorov or JMAK) method was investigated. Analyzing the data obtained, it can be noted that with increasing die speed, there is an increased level of twisting of the workpiece, which is reflected in a smooth decrease in grain size. Looking at the microstructure in different directions, one can note a nearly identical grain size pattern.