Evaluation of properties of dissimilar joints of Ti–۶Al–۴V to AISI ۳۰۴ austenitic stainless steel by transient liquid phase method

Stainless steels and titanium-based alloys are among the engineering materials that have become very popular among craftsmen and researchers due to their excellent corrosion resistance, weldability and other properties. The integration of titanium and stainless steel alloys is also widely used in many industries. Therefore, in this study, the effect of temperature on the dissimilar joining of Ti۶Al۴V alloy and ۳۰۴ AISI stainless steel through the transient liquid phase has been investigated. The process was performed at three temperatures of ۹۰۰, ۹۵۰ and ۱۰۰۰ °C and a fixed time of ۶۰ minutes. A scanning electron microscope equipped with Energy Dispersive Spectroscopy analysis was used to examine the junction area. In none of the samples was the isothermal solidification zone completely formed. The shear strength test also showed that with increasing temperature, the shear strength decreased. Thus, the highest shear strength was obtained at ۹۰۰ °C. Xray diffraction patterns confirm the presence of intermetallic compounds based on iron, copper and titanium.

Keywords:

Transient Liquid Phase , Ti۶Al۴V Alloy , AISI ۳۰۴ Austenitic Stainless Steel.