In-situ synthesis of a novel multiphase reinforced Al-matrix composite prepared from A6061 alloy and a small amount of MXene

IF 3.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Vacuum Pub Date : 2025-04-01 Epub Date: 2025-02-13 DOI:10.1016/j.vacuum.2025.114133

Li-Fu Yi , Kenta Noguchi , Zhilei Wang , Peter Benard Oboso , Zhong-Chun Chen

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Abstract

A novel in-situ multiphase reinforced Al matrix composite (AMC) was synthesized by combining spark plasma sintering (SPS), hot extrusion, and subsequent T6 treatment using A6061 alloy and a small amount of MXene as the starting materials. Although the MXene was randomly distributed in the as-SPSed composite, it was preferentially oriented along the extrusion direction after extrusion. During T6 treatment, the MXene was decomposed into Ti and C, and its oxygen-containing functional groups reacted with Mg in the A6061 to form MgO. The reinforcing phases including MgO, Mg₂Si, TiC and Q′ were uniformly distributed in the Al alloy matrix. The hardness, yield strength, and ultimate tensile strength of the peak-aged AMC were 115 HV, 329 MPa, and 355 MPa, respectively, which are 10.9 %, 12.7 %, and 6.6 % higher than those of the peak-aged unreinforced A6061 alloy. This work provides new insights for designing in-situ multiphase reinforced AMC with excellent mechanical performance.

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原位合成以A6061合金和少量MXene为原料制备的新型多相增强al基复合材料

以A6061合金和少量MXene为起始材料，采用火花等离子烧结（SPS）、热挤压和T6处理相结合的方法合成了一种新型原位多相增强Al基复合材料（AMC）。虽然MXene在as-SPSed复合材料中是随机分布的，但挤出后MXene优先沿挤出方向取向。在T6处理过程中，MXene分解为Ti和C，其含氧官能团在A6061中与Mg反应生成MgO。强化相MgO、Mg2Si、TiC和Q′均匀分布在铝合金基体中。其硬度、屈服强度和极限抗拉强度分别为115 HV、329 MPa和355 MPa，分别比未增强的A6061合金高10.9%、12.7%和6.6%。本研究为设计具有优异力学性能的原位多相增强AMC提供了新的思路。

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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.