Impact and abrasion wear resistance of the hardfacings based on high-manganese steel reinforced with multicomponent carbides of Ti-Nb-Mo-V-C system
Pavlo Prysyazhnyuk, Olexandr Ivanov, Oleh Matvienkiv, S. Yu. Marynenko, Oleh Korol, Ihor Koval
Abstract
Structure formation and impact-abrasion wear resistance of the hardfaced layers deposited by flux-cored arc welding with powder wires of a high-manganese austenitic steel – (Ti, Nb, Mo, V)C high-entropy(-like) carbide system, were investigated and compared to the impact-abrasion resistance of the commercially available high-manganese steel-based hardfacing as well as with high-speed and mild carbon steels. Flux for the flux-cored wires was prepared by adding the equimolar mixture of TiC, NbC, VC and Mo2C powders to the Si-alloyed ferromanganese and arc shielding components. Microstructure investigations of the hardfaced layers show, that its structure consists of an austenitic matrix and complex carbide reinforcements, in form of uniformly distributed fine-grained particles. Its impact-abrasion wear resistance is more than three times higher than that for hardfacing, deposited with commercially available high-manganese steel-based electrodes and almost equal to the high-speed steel samples tested under the same conditions.