Microstructure and Wear Resistance of 62Cu-38Zn Brass with Bionic Coupling Units Treated by Laser Cladding

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Yong, Hu^1 ; Yong, Cao^1 ; Kaifeng, Hu^1 ; Ye, Hu^1 ; Ling, Li^2 ; Minghao, Shen^3 ; Zhihui, Zhang^4

School of Mechanical Science and Engineering, Jilin University, Changchun

130022, China^1

CRRC Zhuzhou Locomotive Co., Ltd., Zhuzhou

412001, China^2

College of Automotive Engineering, Jilin University, Changchun

130022, China^3

Key Laboratory of Bionic Engineering (Ministry of Education China), Jilin University, Changchun

130022, China^4

关键词: Bionic coupling;    Chemical compositions;    Dendritic microstructure;    Dry sliding wear;    Fe-based;    Metallurgical bonding;    Ni based alloy;    Self fluxing alloy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012101/pdf
DOI  :  10.1088/1757-899X/423/1/012101

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to improve the wear resistance of 62Cu-38Zn brass, bionic coupling units were fabricated by laser cladding using Ni-based, Fe-based and Co-based self-fluxing alloy powders. The microstructures, chemical composition and mechanical properties of the units were studied in this paper. Wear resistance of samples was examined by dry sliding wear. Good metallurgical bonding between the unit and substrate was obtained, and fine dendritic microstructure was resulted in the unit zone, which proved marked availability of laser cladding on brass. Laser cladding treatments with different self-fluxing alloy powders were beneficial to reinforcing the surface of brass and then improved its wear resistance with various results. The Ni-based alloy powders led to the best wear resistance amongst the all samples.