Influence of particle oxidation on age-hardening behaviour of as-fabricated and remelted SiC reinforced Al1% Mg alloys
✍ Scribed by L. Salvo; M. Suery; J.G. Legoux; G. l'Esperance
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 598 KB
- Volume
- 135
- Category
- Article
- ISSN
- 0921-5093
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✦ Synopsis
Age-hardening behaviour of Al-l%Mg alloys reinforced with as received and oxidized particles is studied to evaluate the extent of interfacial reactions that take place during high temperature treatments of the composite. These treatments include both normal fabrication procedure and remelting above the liquidus temperature for various times. It is shown that age hardening depends on the oxidation level of the particles and the duration of treatments at 800 °C. This is interpreted in terms of the compositional changes of the matrix as a result of interfacial reactions. The results indicate that the oxide layer, which is formed around the particles during fabrication of the composites with oxidized particles, protects them (at least partially) against attack by liquid aluminium.