Insight into the tribological behavior of the dual-phase nickel aluminum bronze alloy by multiscale characterization

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2024-08-02 DOI:10.1016/j.wear.2024.205530

Yang Du , Yiheng Dong , Shuo Ma , Xiaobin Yang , Jiang Ju , Zhao Shen , Zhongyuan Suo , Liming Fu , Aidang Shan

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Abstract

In this work, the microstructure and tribological properties of coarse-grained nickel aluminum bronze (NAB) alloys with different ratios of α/β′ phases were studied at room temperature. For revealing the intrinsic tribology behavior, the hard SiC sanding disc with a microhardness of 2400∼2800 HV, almost 10 times higher than that of the NAB alloy, was selected as the counter material. The tribological behavior was investigated using multiscale characterization, including macroscale X-ray diffraction (XRD) and laser scanning confocal microscopy (LCM), microscale scanning electron microscopy (SEM), as well as nanoscale transmission electron microscopy (TEM). The findings reveal that abrasive wear predominates in these samples, with delamination, oxidation, and fatigue wear also present. Notably, the dual-phase alloy exhibits inferior wear resistance compared to the single-phase alloy, attributed to the alternating-wear process of the two phases. Additionally, we observed the in-situ formation of a nano oxide film during the friction process, highlighting its significant role in enhancing the wear resistance of NAB alloys through a self-lubricating effect.

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通过多尺度表征深入了解双相镍铝青铜合金的摩擦学行为

本文研究了室温下具有不同 α/β′ 相比例的粗晶粒镍铝青铜（NAB）合金的微观结构和摩擦学特性。为了揭示摩擦学的内在行为，选择了显微硬度为 2400∼2800 HV 的硬质碳化硅砂盘作为对比材料，其硬度几乎是 NAB 合金的 10 倍。采用多尺度表征方法，包括宏观 X 射线衍射 (XRD) 和激光扫描共聚焦显微镜 (LCM)、微观扫描电子显微镜 (SEM) 以及纳米级透射电子显微镜 (TEM)，对摩擦学行为进行了研究。研究结果表明，这些样品主要存在磨料磨损，同时也存在分层、氧化和疲劳磨损。值得注意的是，与单相合金相比，双相合金的耐磨性较差，这归因于两相的交替磨损过程。此外，我们还观察到在摩擦过程中原位形成了纳米氧化膜，这凸显了纳米氧化膜在通过自润滑效应增强 NAB 合金耐磨性方面的重要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.