Synthesis of an Al-Based Composite Reinforced by Multi-Phase ZrB2, Al3BC and Al2O3 with Good Mechanical and Thermal Properties at Elevated Temperature

Yihan Bian; Tong Gao; Yongfeng Zhao; Guiliang Liu; Xiangfa Liu

doi:10.3390/ma13184048

Synthesis of an Al-Based Composite Reinforced by Multi-Phase ZrB₂, Al₃BC and Al₂O₃ with Good Mechanical and Thermal Properties at Elevated Temperature

Materials (Basel). 2020 Sep 12;13(18):4048. doi: 10.3390/ma13184048.

Authors

Yihan Bian¹, Tong Gao¹, Yongfeng Zhao¹, Guiliang Liu², Xiangfa Liu¹

Affiliations

¹ Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jingshi Road 17923, Jinan 250061, China.
² Shandong Mai Ao Jing Advanced Materials Co. Ltd., Linyi 276000, China.

Abstract

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.

Keywords: Al composite; elevated temperature properties; multiphase.

Abstract

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