| Cu含量对CNTs/Al-Cu复合材料显微组织和压缩力学性能的影响（英文） |
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| 引用本文： | 罗思伟,吴悦,陈彪,宋旼,易健宏,郭柏松,王启伟,杨勇,李卫,于振涛. Cu含量对CNTs/Al-Cu复合材料显微组织和压缩力学性能的影响（英文）[J]. 中国有色金属学会会刊, 2022, 32(12): 3860-3872. DOI: 10.1016/S1003-6326(22)66063-1 |
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| 作者姓名： | 罗思伟 吴悦 陈彪 宋旼 易健宏 郭柏松 王启伟 杨勇 李卫 于振涛 |
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| 作者单位： | 1. 暨南大学先进耐磨蚀及功能材料研究院;2. 西北工业大学凝固技术国家重点实验室;3. 中南大学粉末冶金国家重点实验室;4. 昆明理工大学材料科学与工程学院;5. 香港城市大学材料科学及工程系 |
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| 基金项目： | The financial supports from the National Natural Science Foundation of China (Nos. 52004101 and 52071269)；;the Chinese Postdoctoral Science Foundation (No. 2020T130246)；;the Fund of the State Key Laboratory of Solidification Processing in NWPU, China (No. SKLSP202121)；;the Guangdong Basic and Applied Basic Research Foundation, China (No. 2020A1515110621)；;the Fundamental Research Funds for the Central Universities, China (No. 11620345)； |
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| 摘 要： | 通过热压烧结和热轧制备碳纳米管(CNTs)增强的Al-Cu基复合材料，系统研究Cu含量对Al与CNTs的界面反应、含Cu沉淀物的析出行为及相应复合材料力学性能的影响。研究表明，提高Cu含量不仅能使复合材料制备过程中含Cu析出相的数量和尺寸增加，而且能促进CNTs与Al基体之间的界面反应，加剧CNTs转化为Al4C3。由于含有1%Cu(质量分数)的复合材料保持CNTs的原始结构，因此，它在所有复合材料中具有最高的强度、弹性模量和硬度。此外，增加Cu含量还能改变影响复合材料强度的主要强化机制。
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| 关 键 词： | 铝基复合材料 Al-Cu析出相 碳纳米管 界面反应 强化机制 |
| 收稿时间： | 2021-09-30 |
Effects of Cu content on microstructures and compressive mechanical properties of CNTs/Al-Cu composites |
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| Affiliation: | 1. Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an 710072, China;3. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;4. School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;5. Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 999077, China |
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| Abstract: | 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. |
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| Keywords: | Al matrix composites Al-Cu precipitates carbon nanotubes interfacial reaction strengthening mechanism |
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