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首页> 外文会议>Symposium on Characterization of Minerals, Metals, and Materials >Microstructure Evolution of Additively Manufactured TiC Reinforced Graded Metal Matrix Composite
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Microstructure Evolution of Additively Manufactured TiC Reinforced Graded Metal Matrix Composite

机译：添加TiC增强梯度金属基复合材料的微观结构演变

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Ceramic reinforced metal matrix composites (MMCs) have advantages over traditional metallic materials, such as higher hardness, strength, and fracture toughness, which make them suitable for ballistic and defence applications. In this research, an in situ synthetized TiC reinforced Ti-Ni matrix sample was additively manufactured with Ti64 powders and Ni coated graphite powders. Input of Ni coated graphite powders increases from bottom to top of the sample to create a chemical gradient. Microstructure of the graded sample was examined using optical and scanning electron microscopy. The characterization results show that TiC dendrites are in situ synthesized within the metal matrix that contains α-Ti and Ti_2Ni. Morphologies and proportions of these phases change with the variation of chemical composition. Mechanisms of the evolution of microstructure are further analysed. The gradual variation of microstructures indicates that 3D printed graded MMC can provide gradient properties that are preferable for ballistic applications.
机译：与传统金属材料相比，陶瓷增强金属基复合材料（MMC）具有更高的硬度、强度和断裂韧性，适用于弹道和国防应用。在本研究中，原位合成的TiC增强Ti-Ni基体样品添加了Ti64粉末和镍涂层石墨粉末。镍涂层石墨粉末的输入从样品的底部到顶部增加，以形成一个化学梯度。用光学显微镜和扫描电子显微镜检查了梯度样品的微观结构。表征结果表明，TiC枝晶是在含有α-Ti和Ti_2Ni的金属基体中原位合成的。这些相的形态和比例随化学成分的变化而变化。进一步分析了微观结构演化的机理。微观结构的逐渐变化表明，3D打印梯度MMC可以提供更适合弹道应用的梯度性能。

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