Effect of TiC Content on the Microstructure and Mechanical Properties of Ti3AlC2/Al2O3In Situ Composites Synthesized by Hot Pressing
Effect of TiC Content on the Microstructure and Mechanical Properties of Ti3AlC2/Al2O3In Situ Composites Synthesized by Hot Pressing
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DOI：
10.4028/www.scientific.net/msf.724.278
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发表时间：
2012-06
期刊：
影响因子：
--
通讯作者：
L. Ye;Jianfeng Zhu
中科院分区：
文献类型：
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作者：
L. Ye;Jianfeng Zhu
以Ti-TiC-Al-TiO2为原料，在1350℃反应热压下成功合成了Ti3AlC2/Al2O3原位复合材料。研究了TiC含量对合金相组成、显微组织和力学性能的影响。结果表明，TiC含量降至理论含量的90%，产品纯度最高。这种偏差主要是由于Ti3AlC2在高温下的分解和Al的汽化。讨论了TiC含量对Ti3AlC2/Al2O3复合材料断裂韧性、抗弯强度、维氏硬度的影响。
The Ti3AlC2/Al2O3 in situ composites were successfully synthesized from the system of Ti-TiC-Al-TiO2 by reactive hot pressing at 1350 °C. The effect of TiC content on the phase composition, microstructure and mechanical properties were investigated in detail. The results indicate that the fabricated products possess the highest purity as the TiC contents reduce to 90 % of its theoretical content. This deviation is mainly attributed to the decomposition of Ti3AlC2 and vaporization of Al at high temperatures. The effect of TiC content on the fracture toughness, flexural strength, Vickers hardness of Ti3AlC2/Al2O3 composites was also discussed in detail.