Synthesis and wear characterization of Al7075/molybdenum disulfide/zirconium diboride hybrid composites Synthese und Verschleißcharakterisierung von hybriden Al7075/MoS2/ZrB2-Verbundwerkstoffen

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-04-23 DOI:10.1002/mawe.202300216

M. Dubey, N. Kumar, S. Mohan

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Abstract

The manuscript presents the synthesis and dry sliding wear performance of Al7075 alloy-based composites. Five compositions namely Al7075 alloy, Al7075+3 vol % molybdenum disulfide, Al7075+3 vol % molybdenum disulfide+3 vol % zirconium diboride, Al7075+3 vol % molybdenum disulfide+6 vol % zirconium diboride and Al7075+3 vol % molybdenum disulfide+9 vol % zirconium diboride were stir cast and characterized for hardness, x-ray diffraction, microstructure, and tribological properties. In-situ formed zirconium diboride particles increase the hardness of Al7075 alloy whereas molybdenum disulfide shows the opposite trend due to its self-lubricating nature. X-ray diffraction analysis identifies subsequent phase particles in the matrix while microstructural images exhibit the dispersion and morphology of reinforcement particles. The wear tests and friction coefficient were analyzed with variations of sliding velocity, normal load, sliding distance, and compositions. Further, the obtained wear results were also correlated with microstructure and wear surface topography. Al7075+3 vol % molybdenum disulfide composite shows the lowest coefficient of friction because of its self-lubricating nature. Al7075+3 vol % molybdenum disulfide+9 vol % zirconium diboride hybrid composite exhibits the lowest wear rate at high velocity as well as at high load and can be potentially used in manufacturing and tribological applications. Moreover, the use of this material may lead to the minimum requirement of external toxic lubricants that make it cost-effective and environmentally sustainable.

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Al7075/二硫化钼/二硼化锆混合复合材料的合成与磨损特性分析 Al7075/MoS2/ZrB2混合复合材料的合成与磨损特性分析

手稿介绍了 Al7075 合金基复合材料的合成和干滑动磨损性能。五种成分分别是 Al7075 合金、Al7075+3 vol % 二硫化钼、Al7075+3 vol % 二硫化钼+3 vol % 二硼化锆、和 Al7075+3 vol % 二硫化钼+9 vol % 二硼化锆进行了搅拌铸造，并对硬度、X 射线衍射、微观结构和摩擦学特性进行了表征。原位形成的二硼化锆颗粒提高了 Al7075 合金的硬度，而二硫化钼由于其自润滑特性则呈现出相反的趋势。X 射线衍射分析确定了基体中的后续相颗粒，而微观结构图像则显示了强化颗粒的分散和形态。随着滑动速度、法向载荷、滑动距离和成分的变化，对磨损试验和摩擦系数进行了分析。此外，获得的磨损结果还与微观结构和磨损表面形貌相关联。Al7075+3 vol % 二硫化钼复合材料因其自润滑特性而显示出最低的摩擦系数。Al7075+3 vol % 二硫化钼+9 vol % 二硼化锆混合复合材料在高速和高负荷下的磨损率最低，可用于制造和摩擦学应用。此外，使用这种材料可将外部有毒润滑剂的需求降至最低，从而使其具有成本效益和环境可持续性。

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来源期刊

Materialwissenschaft und Werkstofftechnik 工程技术-材料科学：综合

CiteScore

2.10

自引率

9.10%

发文量

154

审稿时长

4-8 weeks

期刊介绍： Materialwissenschaft und Werkstofftechnik provides fundamental and practical information for those concerned with materials development, manufacture, and testing. Both technical and economic aspects are taken into consideration in order to facilitate choice of the material that best suits the purpose at hand. Review articles summarize new developments and offer fresh insight into the various aspects of the discipline. Recent results regarding material selection, use and testing are described in original articles, which also deal with failure treatment and investigation. Abstracts of new publications from other journals as well as lectures presented at meetings and reports about forthcoming events round off the journal.