Microstructures and Compressive Properties of Al Matrix Composites Reinforced with Bimodal Hybrid In-Situ Nano-/Micro-Sized TiC Particles
Feng Qiu,
Hao-Tian Tong,
Yu-Yang Gao,
Qian Zou,
Bai-Xin Dong,
Qiang Li,
Jian-Ge Chu,
Fang Chang,
Shi-Li Shu,
Qi-Chuan Jiang
Affiliations
Feng Qiu
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Hao-Tian Tong
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Yu-Yang Gao
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Qian Zou
Department of Mechanical Engineering, Oakland University, Rochester, MI 48309, USA
Bai-Xin Dong
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Qiang Li
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Jian-Ge Chu
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Fang Chang
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Shi-Li Shu
State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130012, China
Qi-Chuan Jiang
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Bimodal hybrid in-situ nano-/micro-size TiC/Al composites were prepared with combustion synthesis of Al-Ti-C system and hot press consolidation. Attempt was made to obtain in-situ bimodal-size TiC particle reinforced dense Al matrix composites by using different carbon sources in the reaction process of hot pressing forming. Microstructure showed that the obtained composites exhibited reasonable bimodal-sized TiC distribution in the matrix and low porosity. With the increasing of the carbon nano tube (CNT) content from 0 to 100 wt. %, the average size of the TiC particles decreases and the compressive strength of the composite increase; while the fracture strain increases first and then decreases. The compressive properties of the bimodal-sized TiC/Al composites, especially the bimodal-sized composite synthesized by Al-Ti-C with 50 wt. % CNTs as carbon source, were improved compared with the composites reinforced with single sized TiC. The strengthening mechanism of the in-situ bimodal-sized particle reinforced aluminum matrix composites was revealed.
