Development of Crack Free Hardfacing Weld Deposits

Core Participants:
                              University of Adelaide
                              University of Wollongong 
                              Welding Technology Institute of Australia

Project Summary:
High chromium white iron is the most commonly used alloy for hardfacing weld deposits in the mining and mineral processing industries. However this material tends to check crack which affects its performance in service. This check cracking is associated with the chromium iron carbide present in the microstructure. In this project the chemistry of the weld deposit will be marginally modified to produce weld microstructures that do not contain the interconnected carbide networks while increasing the deposits wear resistance. Verification of the performance of the new chemistry will be demonstrated through wear testing and metallography.


Check cracking on the surface of the weld overlay

Weld overlay

Clad plate