取向对碳纳米管增强铝复合材料损伤容限的影响

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-23 DOI:10.1016/j.compositesa.2025.109320

Han Zhu , Zengqian Liu , Xiaonan Li , Hanzhong Liu , Xuegang Wang , Jiapeng Hou , Zhenyu Liu , Bolv Xiao , Zongyi Ma , Zhefeng Zhang

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引用次数: 0

摘要

碳纳米管增强铝基复合材料因其具有良好的性能而备受关注。断裂韧性和冲击韧性是它们在结构应用中必不可少的。本研究制备了不同碳纳米管含量的碳纳米管增强2009Al合金复合材料，系统表征了其显微组织、纳米压痕和拉伸性能、断裂韧性和冲击韧性，并与无碳纳米管合金进行了比较。结果表明，复合材料在多个长度尺度上具有各向异性的结构特征，导致了明显的力学各向异性，挤压方向的性能明显优于横向的性能。碳纳米管含量的增加导致纳米压痕硬度的提高，模量和抗拉强度的降低，但导致塑性和韧性的妥协。从微观组织和断口特征等方面分析了材料的力学性能。该研究有望为碳纳米管增强铝基复合材料的结构应用和部件设计提供见解。

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Orientation effects on the damage tolerance of carbon nanotube-reinforced aluminum composites

Carbon nanotube (CNT)-reinforced aluminum matrix composites have attracted significant attention due to their promising properties. Fracture toughness and impact toughness are essential for their use in structural applications. In this study, CNT-reinforced 2009Al alloy composites with varying CNT contents were fabricated, and their microstructure, nanoindentation and tensile properties, fracture toughness, and impact toughness were systematically characterized and compared with those of CNT-free alloy. The results reveal anisotropic structural characteristics of the composites across multiple length scales, leading to pronounced mechanical anisotropy, with properties along the extrusion direction markedly surpassing those along the transverse direction. The increase in CNT content leads to enhanced nanoindentation hardness, reduced modulus, and tensile strength, but results in a compromise in plasticity and toughness. The mechanical properties were analyzed in relation to the microstructures and microscopic fracture characteristics. This study is expected to offer insights for the structural applications and component design of CNT-reinforced aluminum matrix composites.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.