Effect of destabilization treatment on microstructure, hardness and abrasive wear of high chromium hardfacing.

Chotborský R., Hrab P., 2013. Eff ect of destabilization treatment on microstructure, hardness and abrasive wear of high chromium hardfacing . Res. Agr. Eng., 59: 128–135. Hardfacing metals are widely used in arc welding and plasma transfer arc technologies and industries. However, application of hardfacing in agriculture is limited due to low toughness after weld depositing. Th is study was focused on destabilization of high chromium hardfacing metal. Th e hardfacing was destabilized at 900 and 1,000°C in the diff erent treatment time intervals. Destabilization treatment showed precipitation of secondary carbides leading to partial transformation of austenite to martensite phase in the matrix. Th e results show that increasing destabilization temperature increased volume of carbide phase in austenitic matrix which aff ects abrasive wear resistance .