Abstract In the present work, nano-sized titanium carbide (0.5, 1.0 and 1.5 vol%) reinforced aluminum (Al) metal matrix composites were synthesized by powder metallurgy incorporating microwave sintering and hot extrusion. Microstructural, mechanical and thermal properties of hot extruded unreinforced aluminum and titanium carbide (TiC) reinforced aluminum composites are presented in this paper. X-ray diffraction (XRD) patterns and scanning electron microcopy (SEM) images show the homogeneous distribution of TiC nanoparticles in the Al matrix. The tensile and compressive strengths of Al composites increased with the increase in TiC content, while the ductility decreased. The CTE of Al composite decreased with the progressive addition of hard TiC nanoparticles. Overall, hot extruded Al 1.5 vol% TiC nanocomposite exhibited the best combination of tensile, compressive, hardness and Young's modulus of 186 ± 3 MPa, 416 ± 4 MPa, 9.75 ± 0.5 GPa and ~103 GPa, respectively. High tensile strength and good thermal stability exhibited by Al-TiC nanocomposites developed in this study show the potential for a variety of weight-critical engineering applications.

中文翻译：

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使用纳米级 TiC 陶瓷增强材料增强铝的热和机械响应

摘要 在目前的工作中，采用粉末冶金结合微波烧结和热挤压的方法合成了纳米级碳化钛（0.5、1.0 和 1.5 vol%）增强铝（Al）金属基复合材料。本文介绍了热挤压非增强铝和碳化钛 (TiC) 增强铝复合材料的微观结构、机械和热性能。X 射线衍射 (XRD) 图案和扫描电子显微镜 (SEM) 图像显示了 TiC 纳米颗粒在 Al 基体中的均匀分布。随着TiC含量的增加，Al复合材料的拉伸和压缩强度增加，而延展性降低。随着硬质 TiC 纳米粒子的逐渐添加，Al 复合材料的 CTE 降低。总体而言，热挤压 Al 1。5 vol% TiC 纳米复合材料的拉伸、压缩、硬度和杨氏模量的最佳组合分别为 186 ± 3 MPa、416 ± 4 MPa、9.75 ± 0.5 GPa 和 ~103 GPa。本研究中开发的 Al-TiC 纳米复合材料表现出的高拉伸强度和良好的热稳定性显示了其在各种重量关键工程应用中的潜力。