颗粒增强钛基复合材料的制备技术及微观组织

Preparation and Microstructure of Particulate Reinforced Titanium Alloy Matrix Composites

综述了近几年自生颗粒增强钛基复合材料的主要制备技术,其制备方法有粉末冶金、熔铸法、XDTM法、燃烧合成法、燃烧合成-熔铸法、接触反应法、机械合金化法、激光熔覆法等。论述了不同制备方法中分别以碳化物和硼化物为增强相的钛基复合材料的微观组织。碳化物增强相主要有 TiC,Ti2AlC,Ti3AlC 等。硼化物增强相有 TiB2和 TiB。分别对增强相的形态进行了分析,并对钛基复合材料的发展提出了展望。

The preparation of in-situ particulate reinforced titanium alloy matrix composites in recent years were reviewed, which includes powder metallurgy, melting-casting, XDTM (Exothermic Dispersion), SHS (Self-propagating High-temperature Synthesis), SHS-melting-casting, CR (Contact Reaction), MA (Mechanical Alloying), laser-melting cladding et al. Microstructures of carbide and boride reinforced respectively titanium alloy matrix composites by different fabrication methods were reviewed. The carbide reinforcements include TiC, Ti2AlC, Ti3AlC et al. The boride reinforcements include TiB2 and TiB. The morphology of reinforced phase were analyzed respectively. Future prospect for these titanium alloy matrix composites was discussed.