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首页> 外文期刊>Journal of Materials Engineering and Performance >Development of Pore-Free Ti-Si-C MAX/Al-Si Composite Materials Manufactured by Squeeze Casting Infiltration
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Development of Pore-Free Ti-Si-C MAX/Al-Si Composite Materials Manufactured by Squeeze Casting Infiltration

机译：通过挤压铸造渗透制造的无孔Ti-Si-C MAX / AL-Si复合材料的研制

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摘要

Open-porous MAX phase skeletons from Ti3SiC2 were manufactured by Microwave-Assisted Self-propagating High-temperature Synthesis (MASHS) and subsequently subjected to squeeze casting infiltration with an Al-Si lightweight casting alloy (EN AC-44200). This alloy was chosen due to its high flowability, corrosion resistance and good machinability. The manufactured composites, together with a reference sample of the original alloy, underwent testing of thermal properties, including thermal conductivity and diffusivity, specific heat and thermal expansion in the temperature range 50-500 degrees C, which corresponds to the expected working temperatures of the material. The fabricated AlSi/Ti3SiC2 composites have significantly increased thermal stability, with coefficients of thermal expansion (approximately 10-11 x 10(-6) degrees C-1) half that of the original alloy. As regards mechanical properties, the instrumental Young's modulus and Vickers hardness of the composite materials are 170.8 and 8.5 GPa, respectively. Moreover, the microstructure and phase composition, structural defects and potential impacts between constituents of the manufactured composites were characterized using SEM, TEM and STEM microscopy and EDS and XRD analysis.
机译：来自Ti3SIC2的开放式多孔最大相骨架通过微波辅助自展式高温合成（MASH）制造，随后用AL-Si轻质铸造合金（EN AC-44200）挤压浇注渗透渗透。选择该合金是由于其高流动性，耐腐蚀性和良好的可加工性。制造的复合材料与原始合金的参考样品一起，经历热性能的测试，包括导热性和漫射性，在50-500摄氏度的温度范围内的导热性和扩散性，比热膨胀，这对应于预期的工作温度材料。制造的alsi / Ti3SiC2复合材料具有显着提高的热稳定性，热膨胀系数（约10-11×10（-6）C-1）原始合金的一半。关于机械性能，复合材料的乐器杨氏模量和维氏硬度分别为170.8和8.5GPa。此外，使用SEM，TEM和茎显微镜和EDS和XRD分析，表征了制造复合材料的组分之间的微观结构和相组合物，结构缺陷和潜在的影响。

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