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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 4    August 2005

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Microstructure and wear properties of 
YT758/CuZnNi hardfacing materials
WANG Xin-hong(王新洪)1, ZHANG Min(张 敏)2
ZOU Zeng-da(邹增大)1, QU Shi-yao(曲仕尧)1

1. School of Materials Science and Engineering, Shandong University, 
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 

ISSN 1672-7029
CN 43-1423/U

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