Cu-Al 마찰용접 접합부 계면에서 열처리에 따른 금속간화합물 성장

To investigate the influence of heat treatment on the growth intermetallic compounds (IMCs) at the joint interface of friction-welded Cu-Al, several heat treatments are performed at three different temperature with different times. The experiments reveal three different IMCs layers which are significantly influenced by atomic diffusion of Cu and Al with heat treatment conditions. Since the formation of these IMCs layers can affect mechanical properties of friction-welded Cu-Al interfaces, the relationship between the microstructure of IMCs layers and the tensile strength is analyzed according to heat treatment temperature and times. (Received January 14, 2019; Revised March 6, 2019; Accepted March 22, 2019)