Microstructure and compressive properties of in situ synthesized TiC/Ti composites

作者：Lu, WJ^*; Yang, ZF; Zhang, D; Zhang, XN; Wu, RJ; Sakata, T; Mori, H

来源：Zeitschrift fur Metallkunde, 2002, 93(3): 219-222.

DOI：10.3139/146.020219

• Ti matrix composites
• TiC
• microstructure
• mechanical properties
• in situ synthesized composite

TiC/Ti composites were produced by nonconsumable arc-melting technology utilizing the self-propagation high-temperature synthesis reaction between Ti and graphite. X-ray diffraction was used to identify the phases in the composite. The microstructures of the composites were observed by optical microscopy and transmission electron microscopy. The results show that there are two phases in the composite: TiC and Ti. Reinforcements are distributed uniformly in the matrix alloy. The interface between reinforcement and Ti alloy is very clean. There are high-density dislocations around the TiC particles due to the difference in coefficient of thermal expansion between TiC and Ti. The mechanical properties of the composites improve significantly due to the incorporation of reinforcement. The addition of Al not only strengthens the matrix alloy by solid-solution strengthening, but also improves the mechanical properties of the composites by refining the reinforcement and matrix alloy. The strengthening mec

• 出版日期2002-3
• 单位上海交通大学