Effect of aging treatment on microstructure, mechanical properties and corrosion behavior of AZ91 / 64SiO <sub>2</sub> -31CaO-5P <sub>2</sub> O <sub>5</sub> composite
This study explores the microstructural evolution and corrosion resistance of AZ91 magnesium alloy composites reinforced with bioactive glass (BG) particles and processed via friction stir extrusion (FSE), followed by aging heat treatment. The severe plastic deformation induced by FSE transforms the as-cast structure into a refined, equiaxed grain morphology, while subsequent aging promotes the controlled precipitation of β-Mg 17 Al 12 phases. BG particles acting as nucleation sites for precipitates and inhibiting grain coarsening during thermal exposure. These combined effects lead to significant improvements in mechanical performance (yield strength of 285.1 MPa and a hardness of 81.9 HV). Electrochemical analyses indicate that both aging and BG reinforcement enhance corrosion resistance by facilitating the formation of protective surface films and reducing cathodic reaction kinetics.
Authors
- Sayed Mahmood Rabiee (ORCID: https://orcid.org/0000-0003-1628-7117)
- Hamed Jamshidi Aval (ORCID: https://orcid.org/0000-0002-5431-0413)
- Pourya Motavallian (ORCID: https://orcid.org/0000-0002-6587-7335)
Institutions
- Babol Noshirvani University of Technology (IR)
Publication Details
- Journal
- Materials Science and Technology
- Published
- 2025-10-03
- DOI
- https://doi.org/10.1177/02670836251376465
- Primary Topic
- Magnesium Alloys: Properties and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00