Alloying effect of Ti-6Al-4V on composite of 321 stainless steel fabricated by electron beam additive manufacturing

For the present significant progress has been made in understanding additive manufacturing processes Additive manufacturing techniques such as selective laser melting and laser-based directed energy deposition are widely used, but in comparison, electron-beam melting offers two unique advantages that are particularly important for titanium alloys: a high-vacuum medium and a preheating capacity for both substrate and feed material. This work describes experimental studies of a component built from 321 stainless steel and Ti-6Al-4V. The coating was formed through deposition of a wire with the use of a high-voltage electron beam in the high-vacuum medium. Two materials of deposition on the substrate were carried out in this study. As a result, 321 stainless steel composite coating can successfully form surface with gradient microstructure during EBAM cladding process. At Ti-6Al-4V of compositions was cracked, which led to the destruction of the top of the sample. The presence the intermetallic compounds of the top of the sample adversely affected of the composite that cracking occurred in the material.