Abstract
The optimum welding condition for brake type friction welding of titanium and SUS304 stainless steel was investigated using a response surface method. The optimum friction pressure, forging pressure, friction time and rotating speed of welding were determined as 91MPa, 195MPa, 0.8s and 1842rpm, respectively. The joint welded in CO2 gas had higher tensile strength than that welded in air. The transformation of α-Ti into β-Ti and γ-Fe(Cr) into α-Fe(Cr), and the formation of intermetallic compound (Fe(Ni)•Ti) were induced by the interdiffusion along the welding interface. The joint strength depends on the width of β-Ti and Fe(Ni)•Ti layer.
