| In the preparation process of clad wire, the atoms near the interface inter-diffused to form a diffusion layer with a certain width. The diffusion layer consists of intermetallic compounds and solid solution, and the types and quantities of intermetallic compounds are determined by heat treatment temperature and time. Appropriate interdiffusion is beneficial to improve the bonding strength of clad wires, but too many intermetallic compounds will lead to a decrease in the conductivity and elongation of the clad, and even cause the coating peeling off of the superfine clad wire, which seriously affects the machinability of the clad wire. The types, forming methods and research status of clad wires are systematically introduced, and the interfacial phase of diffusion layer and its influence on the properties of clad wires are emphatically discussed, providing a reference for the development of forming technology and performance research of a novel clad wire. |
