Comparing features in metallurgical interaction when applying different techniques of arc and plasma surfacing of steel wire on titanium

This paper reports a study into the regularities of interphase interaction, features in formation intermetallic phases (IMPs), and defects when surfacing steel on titanium four ways: P-MAG, CMT, plasma by an indirect arc with conductive wire, PAW. A general tendency has been established IMP occurrence all considered methods. It was determined that technique involving wire is less critical as regards formation. That makes it possible to obtain layer minimum thickness (25...54 μm) combination best quality surfaced metal beads. Further minimization size this complicated decrease heat input metal, which gives rise capability be collected separate droplets. The TiFe2, TiFe, α-Fe phase enriched different percentage compositions observed transition zone under techniques modes surfacing. shown possibility formation, addition TiFe2 Ti2Fe at low input. minimizes thermal effect base metal. When used border titanium, composition structure layers some cases approach original bimetallic sheet "titanium-steel" manufactured rolling. up 5 μm thick formed from β iron concentration 44.65 % weight 0.2...0.4 thick, close TiFe phase. next step minimizing might involve introduction barrier between steel.