Effects of Cu content on microstructures and compressive mechanical properties of CNTs/Al-Cu composites

Si wei LUO, Yue WU, Biao CHEN, Min SONG, Jian hong YI, Bai song GUO, Qi wei WANG, Yong YANG, Wei LI, Zhen tao YU

科研成果: 期刊稿件文章同行评审

11 引用 (Scopus)

摘要

The carbon nanotubes (CNTs) reinforced Al-Cu matrix composites were prepared by hot pressing sintering and hot rolling, and the effects of Cu content on the interfacial reaction between Al and CNTs, the precipitation behavior of Cu-containing precipitates, and the resultant mechanical properties of the composites were systematically investigated. The results showed that the increase of Cu content can not only increase the number and size of Cu-containing precipitate generated during the composite fabrication processes, but also promote the interfacial reaction between CNTs and Al matrix, leading to the intensified conversion of CNTs into Al4C3. As a result, the composite containing 1 wt.% Cu possesses the highest strength, elastic modulus and hardness among all composites, due to the maintenance of the original structure of CNTs. Moreover, the increase of Cu content can change the dominant strengthening mechanisms for the enhanced strength of the fabricated composites.

源语言英语
页(从-至)3860-3872
页数13
期刊Transactions of Nonferrous Metals Society of China (English Edition)
32
12
DOI
出版状态已出版 - 12月 2022

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