Impact abrasive wear of tungsten carbide reinforced NiBSi coating fabricated by plasma transferred arc welding

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2024-10-30 DOI:10.1016/j.surfcoat.2024.131507

Jianqing Sun , Chong Chen , Guofeng Zhang , Liujie Xu , Shizhong Wei , Tao Jiang , Feng Mao , Changji Wang , Kunming Pan , Cheng Zhang

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引用次数: 0

Abstract

The development of spherical cast eutectic WC/W₂C (WCSC) reinforced Ni alloy coatings is limited by insufficient understanding of the microstructure evolution and its impact on abrasive wear behavior, which makes it challenging to enhance wear performance through microstructure control. In this study, NiBSi alloy coating reinforced by WCSC particles was prepared using plasma transferred arc welding (PTAW) technology. The microstructure of the coating was characterized using XRD, SEM, LCM, and TEM analysis. The results show that a large number of secondary carbides identified as W₂C, M₆C, and M₄C were generated due to the partial dissolution of WCSC in the Ni-based molten pool. Two kinds of eutectics formed in the matrix were determined to be γ-Ni + M₆C and γ-Ni + Ni₃B. The microstructure evolution mechanism was revealed with the aid of EPMA analysis and CALPHAD-type calculations. The microhardness of the matrix was increased by dispersion strengthening and solid solution strengthening. The impact abrasive wear performances were analyzed using the MLD-10 wear tester, and the maximum impact wear mass loss of coating was observed at an impact energy of 3 J. At an impact energy of 1 J, furrow-type wear and fatigue wear are the main wear mechanisms of the coating. WCSC particles can effectively prevent the cutting of the matrix by abrasive particles. With the increase of impact energy to 3 J, the wear mechanism of the coating is mainly dominated by the fatigue wear and spalling pits of the matrix, as well as the fatigue and spalling of the WCSC particles and secondary carbides. At a high impact energy of 5 J, the fragmentation and spalling of the WCSC particles were generated, and massive spalling pits existed in the matrix. It is suggested that the control of the degradation of the WCSC particles should be focused on in future research.

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等离子体转移电弧焊制造的碳化钨强化 NiBSi 涂层的冲击磨料磨损

球形铸造共晶 WC/W2C (WCSC) 增强镍合金涂层的发展受到了微观结构演变及其对磨损行为影响认识不足的限制，这使得通过微观结构控制来提高磨损性能具有挑战性。本研究采用等离子体转移电弧焊（PTAW）技术制备了由 WCSC 粒子增强的 NiBSi 合金涂层。采用 XRD、SEM、LCM 和 TEM 分析表征了涂层的微观结构。结果表明，由于 WCSC 在镍基熔池中部分溶解，产生了大量的二次碳化物，如 W2C、M6C 和 M4C。基体中形成的两种共晶被确定为γ-Ni + M6C 和 γ-Ni + Ni3B。借助 EPMA 分析和 CALPHAD 型计算揭示了微观结构的演变机制。通过分散强化和固溶强化提高了基体的显微硬度。使用 MLD-10 磨损试验机分析了涂层的冲击磨损性能，在冲击能量为 3 J 时，涂层的冲击磨损质量损失最大；在冲击能量为 1 J 时，沟槽磨损和疲劳磨损是涂层的主要磨损机制。WCSC 颗粒能有效防止磨料颗粒对基体的切割。当冲击能量增加到 3 J 时，涂层的磨损机理主要是基体的疲劳磨损和剥落凹坑，以及 WCSC 颗粒和次生碳化物的疲劳和剥落。在 5 J 的高冲击能量下，WCSC 颗粒产生碎裂和剥落，基体中存在大量剥落坑。建议在今后的研究中重点关注对 WCSC 颗粒降解的控制。

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

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.