Synthesis of an Al-Based Composite Reinforced by Multi-Phase ZrB<sub>2</sub>, Al<sub>3</sub>BC and Al<sub>2</sub>O<sub>3</sub> with Good Mechanical and Thermal Properties at Elevated Temperature
Yihan Bian,
Tong Gao,
Yongfeng Zhao,
Guiliang Liu,
Xiangfa Liu
Affiliations
Yihan Bian
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jingshi Road 17923, Jinan 250061, China
Tong Gao
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jingshi Road 17923, Jinan 250061, China
Yongfeng Zhao
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jingshi Road 17923, Jinan 250061, China
Guiliang Liu
Shandong Mai Ao Jing Advanced Materials Co. Ltd., Linyi 276000, China
Xiangfa Liu
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jingshi Road 17923, Jinan 250061, China
To synthesize Al composite with high strength at elevated temperature, high modulus and thermal stability, ZrB2, Al3BC and Al2O3 particles have been chosen as reinforcements simultaneously. A (9.2 wt.% ZrB2 + 5.6 wt.% Al3BC + 5.5 wt.% Al2O3)/Al composite has been prepared, and the in-situ synthesized particles are nano-sized. Mechanical property tests reveal that the nanoparticles exhibit a remarkable synergistic enhancement effect. The elasticity modulus of the composite is 89 GPa, and the ultimate tensile strengths at 25 °C and 350 °C can be as high as 371 MPa and 154 MPa, respectively.
