Effects of nano-Al2O3 content on the properties and microstructure of alumina reinforced aluminium matrix composite

Haiping Zou; Xiaohong Yu; Hongliang Wu

doi:10.1117/12.3016325

1 February 2024 Effects of nano-Al₂O₃ content on the properties and microstructure of alumina reinforced aluminium matrix composite

Haiping Zou, Xiaohong Yu, Hongliang Wu

Author Affiliations +

Proceedings Volume 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023); 130680M (2024) https://doi.org/10.1117/12.3016325
Event: Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 2023, Hefei, China

Abstract

In this paper, the nano-Al₂O₃ powder with particle size of 30 nm and pure aluminium powder with particle size of 40 μm were employed as raw materials in the hot-press powder metallurgy sintering process to fabricate the alumina reinforced aluminium matrix composites. By using mechanical ball grinding and ultrasonic dispersion, the raw material powders were mixed uniformly. The relative density, hardness and other properties of the sample were tested and the effects of nano-Al₂O₃ content on the properties and microstructure of alumina reinforced aluminium matrix composites were investigated. The result showed that when nano-Al₂O₃ content was increased from 0% to 5%, the relative density of the aluminium matrix composites keeps decrease from 0.986 to 0.971 meanwhile the hardness of the composites was increased in the initial stage (nano-Al₂O₃ content from 0% to 2%) and reached its maximum value 31.7 HV when the nano-Al₂O₃ content was 2%. The SEM observation showed the composites had no porosity and the white nano-Al₂O₃ particles were evenly dispersed throughout the silver-white aluminium matrix with perfect interface.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Haiping Zou, Xiaohong Yu, and Hongliang Wu "Effects of nano-Al₂O₃ content on the properties and microstructure of alumina reinforced aluminium matrix composite", Proc. SPIE 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 130680M (1 February 2024); https://doi.org/10.1117/12.3016325

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