High-temperature wear resistance of in-situ B4C particle reinforced TC4 coatings fabricated by laser directed energy deposition

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-25 DOI:10.1016/j.matlet.2025.138988

Wenlong Wang, Kai Zhang, Weijun Liu

引用次数: 0

Abstract

In this study, B₄C particles were introduced into Ti-based coatings to induce the in-situ formation of reinforcing phases, including TiC, TiB, and TiB₂. XRD and EBSD analyses revealed that these reinforcing phases were predominantly distributed along grain boundaries, effectively refining the grain structure and increasing the grain boundary density. Consequently, both the KAM and GND values increased, enhancing the coating’s resistance to plastic deformation. High-temperature tribological tests demonstrated that the reinforcing phases and their synergistic strengthening mechanisms significantly reduced the coefficient of friction and wear rate, improved the wear morphology, and enhanced the coating’s high-temperature wear resistance and microhardness. These findings provide theoretical guidance and technical support for the development of high-performance Ti-based protective coatings for high-temperature applications.

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激光定向能沉积原位B4C颗粒增强TC4涂层的高温耐磨性

本研究将B4C颗粒引入到ti基涂层中，诱导原位形成TiC、TiB和TiB2等增强相。XRD和EBSD分析表明，这些强化相主要沿晶界分布，有效细化了晶粒结构，提高了晶界密度。因此，KAM和GND值都增加了，增强了涂层的抗塑性变形能力。高温摩擦学试验表明，增强相及其协同强化机制显著降低了涂层的摩擦系数和磨损率，改善了涂层的磨损形貌，提高了涂层的高温耐磨性和显微硬度。这些发现为高温高性能钛基防护涂层的开发提供了理论指导和技术支持。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive