金属基复合材料构型化与界面特性的研究现状

    Research Status of Configuration and Interfacial Properties of Metal Matrix Composites

    • 摘要: 以颗粒作为增强相的金属基复合材料既具有基体优良的塑韧性,又具有陶瓷颗粒的高强度与耐高温特性,当陶瓷颗粒体积分数不断增大,其强度、硬度以及耐磨性同时提升,塑性、韧性却大幅度降低。因此,设计并制备强韧匹配、高耐磨的金属基复合材料具有重要意义。随着增强相可控非均匀分布基本理论的突破,增强相非均匀构型成为一种解决强韧化矛盾的有效方法。本文从微观组织、构型设计及界面特性等方面综合阐述了层状复合结构、梯度结构、核壳结构、网络状结构和多尺度混杂结构增强金属基复合材料的研究进展,论述了构型化设计在金属基复合材料中的应用前景与发展方向。

       

      Abstract: The metal matrix composite with particles as the reinforcement phase not only has excellent plasticity and toughness of matrix, but also has high strength and hardness of ceramic particles.When the volume fraction of ceramic particles increases, the strength, hardness and wear resistance increase at the same time, but the plasticity and toughness decrease dramatically.Therefore, it is of great significance to design and prepare metal matrix composites with strength and toughness matching and high wear resistance.With the breakthrough of the basic theory of controlled heterogeneous distribution of reinforced phase, the heterogeneous configuration of reinforced phase has become an effective method to solve the contradiction of strengthening and toughening.The research progress of layered composite structures, gradient structures, core-shell structures, network structures and multi-scale hybrid structures reinforced metal matrix composites was comprehensively expounded from the aspects of microstructure, configuration design and interface characteristics.The application prospect and development direction of configurational design in metal matrix composites were discussed.

       

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