Influence of Si Content on the Mechanical and Tribological Properties of Laser Cladding FeCoNiBSiNb Amorphous Alloy Composite Materials
DU Xian1, YU Dongxin1,2, LIU Jian1,*, CAI Zhihai1, HE Dongyu3, WANG Xiaolong4
1 National Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, China 2 School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China 3 National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, China 4 School of Mechanical Engineering, Anhui University of Technology, Huainan 232001, Anhui, China
Abstract: A series of [(Fe0.6Co0.2Ni0.2)0.75-0.03xB0.2Si0.05+0.03x]96Nb4 amorphous alloy composite coatings were prepared by adjusting the silicon content (x=0, 1, 2, 3, 4, 5, and 6) and their microstructures and tribological properties were investigated by laser cladding technique. Additionally, the effect of Si on the glass forming ability (GFA) of the layers was understood. Results show that an appropriate Si content can refine the microstructure of the FeCoNiBSiNb laser cladding layers and improve the mechanical and tribological properties. The hardness of the coating layer increases monotonically with the Si content. At the Si content of 4.8at% (x=0), the coating layer exhibits a relatively low hardness (734.2HV0.1). Conversely, at the silicon content of 13.44at% (x=3), the coating layer exhibits the highest hardness (1 106HV0.1). The non-crystalline content and tensile strength exhibit an initial increase, followed by a subsequent decrease. At x=2, the coating exhibits its maximum fracture strength (2 880 MPa). However, when x＞2, the fracture strength of the coating decreases with an increase in x. Conversely, with an increase in Si content, the wear volume loss initially decreases and then increases. At a Si content of 10.56at% (x=2), the coating exhibits the highest non-crystalline content (42%), the highest tensile strength (2 880 MPa), and the most favorable dry friction performance.
通讯作者: *Jian Liu,corresponding author,associate researcher,postdoctoral fellow and master’s supervisor of the National Engineering Research Center for Remanufacturing of Mechanical Products,Army Armored Corps College.Currently,he is mainly engaged in the research of high-energy beam additive manufacturing/remanufacturing,heterogeneous welding,and high-entropy alloy molding.xbdliu5899@163.com
作者简介: Xian Du,associate researcher,Department of Equipment Security and Remanufacturing,Army Armored Corps College.Currently,she is mainly engaged in the research of equipment additive manufacturing and anti-fatigue strengthening.
引用本文:
杜娴, 禹东欣, 柳建, 蔡志海, 何东昱, 王晓龙. Si含量对激光熔覆FeCoNiBSiNb非晶合金复合材料力学和摩擦学性能的影响[J]. 材料导报, 2025, 39(12): 24050125-7.
DU Xian, YU Dongxin, LIU Jian, CAI Zhihai, HE Dongyu, WANG Xiaolong. Influence of Si Content on the Mechanical and Tribological Properties of Laser Cladding FeCoNiBSiNb Amorphous Alloy Composite Materials. Materials Reports, 2025, 39(12): 24050125-7.
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2025, Vol. 39 
