Effect of hot extrusion on mechanical properties of Al <sub>2</sub> O <sub>3</sub> /Al composite prepared by spark plasma sintering
Abstract The Al 2 O 3 /Al composite was prepared by spark plasma sintering. The effect of hot extrusion on microstructure and mechanical properties of the Al 2 O 3 /Al composites were investigated. The result shows that the sintered Al 2 O 3 /Al composite obtained by spark plasma sintering has more pores. There are more discontinuous Al 2 O 3 films surrounding the surface of the aluminum powders. After hot extrusion, the discontinuous Al 2 O 3 films are broken into Al 2 O 3 particles, with the form of the Al – Al 2 O 3 – Al interface. The ultimate tensile strength of the extruded Al 2 O 3 /Al composite increases significantly. The maximum ultimate tensile strength of the extruded Al 2 O 3 /Al composite is 175.7 MPa, which can be attributed to the Al – Al 2 O 3 – Al interface.
Authors
- Feng Xu (ORCID: https://orcid.org/0000-0001-5802-7925)
- Wenchao Shi (ORCID: https://orcid.org/0000-0003-2420-5767)
- Ming Tang (ORCID: https://orcid.org/0000-0002-6234-6889)
- Dongmei Gong
Institutions
- Hefei University of Technology (CN)
- West Anhui University (CN)
Publication Details
- Journal
- Materials Testing
- Published
- 2025-10-23
- DOI
- https://doi.org/10.1515/mt-2025-0204
- Primary Topic
- Aluminum Alloys Composites Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.00