(S121 )Control of IMC Thickness in Al/Steel Dissimilar Joining by Using Plasma MIG Welding

摘要

The use of arc welding to join the aluminum and steel caused the formation of brittle intermetallic compound (IMC) at interface of aluminum and steel. Since the formation of IMC is closely related to the heat input into base metal, the control of heat input is worth to control the IMC thickness. In this study, the plasma MIG welding process with the controlled plasma flow in surrounding of the MIG wire is used to control the heat input into base metal.