| 摘要: |
| 界面作为颗粒增强金属基复合材料中硬质颗粒和金属基体之间连接的“纽带”，直接影响复合材料的力学和摩擦性能， 为了更好地揭示界面特性与复合材料整体性能之间的耦合关系，需要对界面展开微观研究。综述近年来对颗粒增强金属基复合材料界面的研究进展。主要分为三个方面：界面结构显微表征，即通过一系列电子显微镜和能谱分析，得到界面形貌、反应产物以及取向关系等信息；微观力学性能测试，即表征界面在微观尺度下的形变和失效过程，进而得到结合强度、断裂韧性等信息；模拟计算，在常规试验达不到的尺度，分析界面的结合能、电荷分布和电子结构，以及模拟界面的变形和失效过程。界面的微观研究对于界面改性和进一步提高颗粒增强金属基复合材料性能具有一定的指导意义。 |
| 关键词: 颗粒增强金属基复合材料 界面 微观表征 结合强度 |
| DOI：10.11933/j.issn.1007-9289.20211029004 |
| 分类号:TB331 |
| 基金项目:国家科技重大专项资助项目(2017-VII-0013-0110) |
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| Research Progress on Interfacial Micro Structure and Properties of Particle Reinforced Metal Matrix Composites |
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TANG Xin1, ZHANG Jie2, MA Tianbao1
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1.Department of Mechanical Engineering, Tsinghua University, Beijing 100084 , China;2.School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083 , China
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| Abstract: |
| As a “bond” between hard particles and metal matrix in particle reinforced metal matrix composites, their interface directly affects mechanical and frictional properties of composites. In order to reveal the coupling relationship between the interfacial properties and mechanical and frictional properties of composites, an in-depth investigation at microscopic scale or even atomic scale on the interface is needed. The progress on the interface of particle reinforced metal matrix composites in recent years is reviewed. It is mainly divided into three aspects: microscopic characterization of the interface structure which obtains the information of interfacial morphology, reaction products and orientation relationship by a series of electron microscopy and energy spectrum analysis; micro mechanical property test which characterizes the deformation and failure process of the interface at the micro scale and obtains the interfacial bonding strength and fracture toughness; simulation that analyses the interfacial binding energy, charge distribution and electronic structure, as well as the deformation and failure process which can’ t be reached on a scale by conventional experiments. A microscopic investigation on the interface could provide guidance to interface modification and further improve the properties of particle reinforced metal matrix composites. |
| Key words: particle reinforced metal matrix composites interface micro characterization bonding strength |
