Research on Microstructure and Wear Resistance of Fe-Based Hardfacing Layer Using Plasma Surfacing Technology

3rd International Conference on Manufacturing, Material and Metallurgical Engineering

机械制造;材料科学;冶金学

Song, Lingling^1 ; Guo, Jian^2 ; Xiaolei, M.A.^2 ; Zhao, Jingnan^2

Mechanical and Material School, Tianjin Sino-German University of Applied Sciences, Tianjin

300350, China^1

College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin

300222, China^2

关键词: Friction coefficients;    Hardfacing alloys;    Hardfacing layers;    Material hardness;    Metallurgical combinations;    Small deformations;    Structure and properties;    Surfacing layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/409/1/012028/pdf
DOI  :  10.1088/1757-899X/409/1/012028

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to enhance the wear resistance of material surface, the hardfacing alloy is usually deposited on its surface by using plasma surfacing technology (PST). The technology has the advantages of the low dilution rate, small deformation, smooth welding path, food metallurgical combination, and no major defects. In this paper, a Fe-based alloy coating had been prepared by PST, and the structure and properties of surfacing layer had been studied. The results showed that the hardness of surfacing layer was significantly greater than that of the substrate. And the coating layer had a snowflake-like structure. Its Lorraine hardness was up to about 60HRC, and the friction coefficient was about half of the 65Mn after quenching. With the increase of the material hardness, the coating layer has excellent abrasion resistance.