Azeez Lawan Rominiyi , Peter Madindwa Mashinini , Olugbenga Ogunbiyi
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The anti-wear characteristics of the composites showed that TNi5SiC composite displayed superior wear resistance with a specific wear rate of 4.75 ± 0.34 × 10<sup>−4</sup> mm<sup>3</sup>/Nm and 2.15 ± 0.34 × 10<sup>−4</sup> mm<sup>3</sup>/Nm under an applied loads of 10 N and 20 N, respectively, among the sintered samples. This represents about 67% and 29% reduction in specific wear rate relative to sample T. This enhanced tribological behaviour was ascribed to the increased surface hardness, the formation of a stable transfer layer, and the reduction in direct asperity contact at the sliding interfaces. However, reinforcement pull-out aggravates abrasive wear and leads to a higher specific wear rate for TNi10SiC composite. This work provides valuable information for advancing Ti6Al4V-based composites for enhanced structural and wear-resistant applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100810"},"PeriodicalIF":6.7000,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing microstructure, nanomechanical and anti-wear characteristics of spark plasma sintered Ti6Al4V alloy via nickel-silicon carbide addition\",\"authors\":\"Azeez Lawan Rominiyi , Peter Madindwa Mashinini , Olugbenga Ogunbiyi\",\"doi\":\"10.1016/j.jsamd.2024.100810\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study examines the nanomechanical and anti-wear behaviour of spark plasma sintered Ti6Al4V matrix composites reinforced with Ni and SiC particles. 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This enhanced tribological behaviour was ascribed to the increased surface hardness, the formation of a stable transfer layer, and the reduction in direct asperity contact at the sliding interfaces. However, reinforcement pull-out aggravates abrasive wear and leads to a higher specific wear rate for TNi10SiC composite. 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引用次数: 0
摘要
本研究探讨了以 Ni 和 SiC 粒子增强的火花等离子烧结 Ti6Al4V 基复合材料的纳米机械性能和抗磨损性能。微观结构分析表明,在金属基体中原位形成了硬质 TiC、Ti3SiC2 和 Ti5Si3 相。纳米压痕分析表明,含 10 wt% SiC 的复合材料(TNi10SiC)的纳米硬度(约 10.3 GPa)和弹性模量(∼177.7 GPa)明显高于未增强的 Ti6Al4V 合金(样品 T)。复合材料纳米力学性能的提高归功于原位形成的坚硬增强相的承载能力。复合材料的抗磨损特性表明,TNi5SiC 复合材料具有优异的耐磨性,在 10 N 和 20 N 的外加载荷下,烧结样品的比磨损率分别为 4.75 ± 0.34 × 10-4 mm3/Nm 和 2.15 ± 0.34 × 10-4 mm3/Nm。这种摩擦学性能的增强归因于表面硬度的提高、稳定转移层的形成以及滑动界面上表面直接接触的减少。然而,强化拉出加剧了磨料磨损,导致 TNi10SiC 复合材料的特定磨损率更高。这项研究为推动基于 Ti6Al4V 的复合材料在增强结构和耐磨方面的应用提供了有价值的信息。
Enhancing microstructure, nanomechanical and anti-wear characteristics of spark plasma sintered Ti6Al4V alloy via nickel-silicon carbide addition
This study examines the nanomechanical and anti-wear behaviour of spark plasma sintered Ti6Al4V matrix composites reinforced with Ni and SiC particles. Microstructural analysis revealed the in-situ formation of the hard TiC, Ti3SiC2 and Ti5Si3 phases within the metal matrix. Nanoindentation analysis revealed that the composite containing 10 wt% SiC (TNi10SiC) exhibited significantly higher nanohardness (about 10.3 GPa) and elastic modulus (∼177.7 GPa) than the unreinforced Ti6Al4V alloy (sample T). The improved nanomechanical performance of the composites was attributed to the load-carrying capacity of the hard, in-situ formed reinforcement phases. The anti-wear characteristics of the composites showed that TNi5SiC composite displayed superior wear resistance with a specific wear rate of 4.75 ± 0.34 × 10−4 mm3/Nm and 2.15 ± 0.34 × 10−4 mm3/Nm under an applied loads of 10 N and 20 N, respectively, among the sintered samples. This represents about 67% and 29% reduction in specific wear rate relative to sample T. This enhanced tribological behaviour was ascribed to the increased surface hardness, the formation of a stable transfer layer, and the reduction in direct asperity contact at the sliding interfaces. However, reinforcement pull-out aggravates abrasive wear and leads to a higher specific wear rate for TNi10SiC composite. This work provides valuable information for advancing Ti6Al4V-based composites for enhanced structural and wear-resistant applications.
期刊介绍:
In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research.
Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science.
With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.