Microstructure and Wear Resistance of a Ni–Fe–Si–B Amorphous Composite Coating by Laser Cladding

IF 3.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2024-07-06 DOI:10.1007/s12540-024-01727-4

Xuanhong Hao, Hongxi Liu, Xiaowei Zhang, Yueyi Wang, Chen Yang, Yaxia Liu

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Abstract

In this study, a Ni–Fe–Si–B amorphous composite coating is coated on H13 steel by laser cladding. Coatings are systematically investigated for their microstructure, phase composition, tribological behavior, and mechanical characteristics. X-ray diffraction results demonstrate that the cladding layer can be divided into the interface, transition, and compositionally stable zones, where the coating has both crystalline and amorphous phases, with up to 57% of the coating being amorphous. According to scanning electron microscopy and transmission electron microscopy analyses, the middle and surface regions of the coating mainly consist of (Fe_0.5Ni_0.5)₃Si, Fe₂B, Fe₂NiB, Ni₃₁Si₁₂, and amorphous phases. The in-situ generated Fe₂B phase is uniformly distributed within the coating, leading to a significant enhancement in microhardness. The greatest hardness of the coating is approximately 927.04 HV_0.2. The composite coating exhibits excellent wear resistance, which is approximately 1.71 times greater than that of the substrate. Minor abrasive wear constitutes the primary wear mechanism for the coatings.

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激光熔覆 Ni-Fe-Si-B 非晶复合涂层的微观结构和耐磨性

本研究采用激光熔覆技术在 H13 钢上镀了一层镍-铁-硅-乙非晶复合涂层。对涂层的微观结构、相组成、摩擦学行为和机械特性进行了系统研究。X 射线衍射结果表明，熔覆层可分为界面区、过渡区和成分稳定区，其中涂层既有结晶相也有非晶相，非晶相占涂层的比例高达 57%。根据扫描电子显微镜和透射电子显微镜分析，涂层的中间和表面区域主要由（Fe0.5Ni0.5）3Si、Fe2B、Fe2NiB、Ni31Si12 和非晶相组成。原位生成的 Fe2B 相均匀地分布在涂层中，从而显著提高了显微硬度。涂层的最大硬度约为 927.04 HV0.2。复合涂层具有优异的耐磨性，约为基体的 1.71 倍。轻微的磨料磨损是涂层的主要磨损机制。

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.