TiC 입자강화 Al기 복합재료에 관한 연구 = A Study on Al Matrix Composites Reinforced with TiC Particulates

다국어 초록 (Multilingual Abstract)

The tensile properties and microstructures of Al composites reinforced with TiC particulates fabricated by pressureless infiltration method were investigated. Under the nitrogen atmosphere spontaneous infiltration of the molten Al alloy into the TiC powder bed occurred. The distribution of TiC particles in the composites was relatively uniform. A1N and MgAl₂O₄ were formed both control alloy and composites as a reaction product. During fabrication of Al-Mg/TiC composites Al₄C₃, Al_(18)Ti₂Mg₃, Ti₂AlC, Al₃Ti and TiAl were formed as a result of the interfacial reaction between Al alloy matrix and TiC particles. Fine AlN particles during composite and control alloy fabrication were formed by the in-situ reaction, which led to higher tensile and yield strengths than that of commercial Al alloy.