Ultrasonic additive manufacturing of layered CNTs reinforced cu matrix composites: interface behavior and multi-performance enhancement

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2026-10-01 Epub Date: 2026-09-23 DOI:10.1016/j.matchar.2026.117110

Rongmao Du, Ruihan Zhao, Siheng Tan, Yanlong Fan, Junlin Pan, Yu Sun, Hongtao Zhang

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引用次数: 0

Abstract

In response to the demand for high strength and high thermal conductivity Cu matrix composites as well as the efficient processing technology in fields such as high-power chip heat dissipation, this paper reports a technology for preparing layered CNTs reinforced Cu matrix composites through ultrasonic additive manufacturing. Under the action of thermo-mechanical coupling, a synergistic strengthening structure composed of fine grain transition zones, high-density geometrically necessary dislocations, and multi-level transition phases was formed at the interface of the composites. Compared with the pure Cu matrix, the tensile strength of the composites increased by 49.3% to 331.00 MPa, and the thermal conductivity increased by 19.4% to 463.039 W/(m·K). This study provides theoretical basis and technical support for the rapid manufacturing and free shaping of high-performance CNTs/Cu composites.

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层状CNTs增强cu基复合材料的超声增材制造：界面行为和多重性能增强

针对高强度、高导热Cu基复合材料的需求，以及大功率芯片散热等领域的高效加工技术，本文报道了一种通过超声增材制造制备层状CNTs增强Cu基复合材料的技术。在热-力耦合作用下，复合材料界面形成了由细晶过渡区、高密度几何必需位错和多级过渡相组成的协同强化结构。与纯Cu基体相比，复合材料的抗拉强度提高了49.3%，达到331.00 MPa，导热系数提高了19.4%，达到463.039 W/（m·K）。本研究为高性能CNTs/Cu复合材料的快速制造和自由成形提供了理论基础和技术支持。

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.