Influence of nano-reinforcements on the mechanical properties and microstructure of titanium matrix composites
Influence of nano-reinforcements on the mechanical properties and microstructure of titanium matrix composites
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DOI：
10.1016/j.compscitech.2011.04.005
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发表时间：
2011-05
影响因子：
9.1
通讯作者：
I. Meléndez;E. Neubauer;P. Angerer;H. Danninger;J. M. Torralba
中科院分区：
文献类型：
--
作者：
I. Meléndez;E. Neubauer;P. Angerer;H. Danninger;J. M. Torralba
这项工作的目标是评估纳米级增强材料，特别是纳米金刚石（ND）和碳纳米管（CNT）对钛基复合材料（TiMMCs）性能的影响。通过使用纳米尺寸的材料作为TiMMCs的增强体，可以预期具有上级机械和物理性能。此外，钛粉末冶金（P/M）提供了在很宽的范围内改变基体中增强体含量的可能性。在这项工作中，TiMMCs已生产钛粉（4级）。复合材料的制造是通过热压完成的，然后对TiMMCs进行表征。阿基米德密度，硬度和氧含量的试样除了机械性能进行了比较，并在这项工作中报告。此外，XRD分析和SEM观察显示，原位形成的碳化钛（TiC）相后，热压后，与ND和CNT增强的TiMMCs，在900 °C和1100 °C分别。纳米粒子在基体中分布均匀，增强效果更显著。
The goal of this work is the evaluation of nanoscaled reinforcements; in particular nanodiamonds (NDs) and carbon nanotubes (CNTs) on properties of titanium matrix composites (TiMMCs). By using nano sized materials as reinforcement in TiMMCs, superior mechanical and physical properties can be expected. Additionally, titanium powder metallurgy (P/M) offers the possibility of changing the reinforcement content in the matrix within a very wide range. In this work, TiMMCs have been produced from titanium powder (Grade 4). The manufacturing of the composites was done by hot pressing, followed by the characterisation of the TiMMCs. The Archimedes density, hardness and oxygen content of the specimens in addition to the mechanical properties were compared and reported in this work. Moreover, XRD analysis and SEM observations revealed in situ formed titanium carbide (TiC) phase after hot pressing in TiMMCs reinforced with NDs and CNTs, at 900 °C and 1100 °C respectively. The strengthening effect of NDs was more significant since its distribution was more homogeneous in the matrix.