真空辅助搅拌铸造AA7075/MoS2/赤泥复合材料显微组织及温度相关微动磨损行为

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Vacuum Pub Date : 2024-11-26 DOI:10.1016/j.vacuum.2024.113884

Priyeshiv Kumar Gurmaita , Virendra Pratap Singh , Rosang Pongen

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引用次数: 0

摘要

本研究探索了通过真空辅助搅拌铸造制备AA7075/MoS2/赤泥混杂复合材料（HC）并对其进行表征。进行了显微组织演化、XRD、硬度和冲击强度等测试。微动磨损试验在不同温度下进行（即室温、50℃和100℃）。MoS2含量高的复合材料，摩擦系数随温度的升高先增大后减小，硬度升高，冲击强度降低。在开发的hc中检测到各种第二相颗粒，包括SiO2， Fe2O3, Al2O3, MoS2， MgO和MgZn，直接影响机械和摩擦学性能。

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Microstructure and temperature-dependent fretting wear behaviour of AA7075/MoS2/Red-Mud Hybrid composites via vacuum-assisted stir casting route

The present research explores the fabrication and characterization of AA7075/MoS₂/Red-mud hybrid composites (HC) through vacuum-assisted stir casting, varying both reinforcement contents from 5 to 15 wt%. Various tests were conducted, including microstructural evolution, XRD, hardness, and impact strength. The fretting wear test was performed at various temperatures (i.e., room temperature, 50 °C, and 100 °C). The coefficient of friction first increased and then decreased with temperature for higher MoS₂ content composite, whereas hardness increased and impact strength reduced. Various second-phase particles, including SiO₂, Fe₂O₃, Al₂O₃, MoS₂, MgO, and MgZn, were detected in the developed HCs, directly influencing the mechanical and tribological properties.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.