Stability of titanium carbide when it is introduced into the melt of the welding bath

A study of the possibility of introducing titanium carbide into the melt of a welding bath has been carried out. Titanium carbide is formed in the structure of the deposited metal due to competent alloying (in-situ), however, the difficulties associated with the impossibility to regulate the factors determining the redistribution of alloying elements between the carbide phase and the matrix make the in-situ technology quite complex. Therefore, attention is increasingly being paid to the introduction of titanium carbide in the finished form (ex-situ technology). With this technology, it is possible to use titanium carbide particles as a reinforcing phase in the production of wear-resistant coatings. Thermodynamically, titanium carbide is not prone to decomposition and interaction with chemical elements in the Fe-Ti-C system, thereby it demonstrates its high stability. However, experimental studies have shown that titanium carbide cracks and dissolves when it enters the melt of the welding bath. This process is accompanied by saturation of metal with titanium and an increase in its hardness.