Özet:

Metal parts frequently fail to perform as intended not because they break but because they deteriorate over time and lose their original shape and functionality. Because they cost-effectively extend the life of components and tools, hardfacing coatings are very common in industry. In this study, the surface of S235JR steel was coated using metal arc welding technique, using massive and chrome carbide cored wires with the addition of ferrochrome and ferroboron powders. Macro and micro hardness tests, microstructure studies and phase analyzes of the coatings were carried out. The hard phases' effects on the coating's fracture toughness were demonstrated using the indentation technique, and the formation of Palmqvist cracks was used to calculate fracture toughness. It was observed that the morphology of secondary hard phases formed in the coating had a positive effect on the fracture toughness.

Anahtar Kelimeler: