Microstructure and wear properties of
YT758/CuZnNi hardfacing materials
YT758/CuZnNi hardfacing materials
(1. School of Materials Science and Engineering, Shandong University,
Ji’nan 250061, China;
2. School of Mechanical Engineering, Shandong University, Ji’nan 250061, China)
Ji’nan 250061, China;
2. School of Mechanical Engineering, Shandong University, Ji’nan 250061, China)
Abstract: Hardfacing materials containing YT758 hardmetal particles cemented by Cu-based alloy was deposited on the substrate to produce milling tools by oxy-acetylene flame process. Microstructure and wear properties of the hardfacing layers were analyzed by scanning electron microscopy(SEM) and electron dispersion X-ray spectroscopy(EDXS) and wear test. The results show that inter-diffusion zone is found at the interface of YT758/CuZnNi, which promises to improve the bonding strength of YT758/CuZnNi. The wear resistance of YT758/CuZnNi hardfacing layers is higher than that of YG8/CuZnNi hardfacing layers. The working efficiency of the milling tools strengthened by YT758/CuZnNi is approximately 2-3 times higher than that strengthened by YG8/CuZnNi.
Key words: wear properties; hardmetal; hardfacing materials; CuZnNi alloy; milling tools