Mechanical characterisation of AA7015 aluminium alloy reinforced with ceramics
| Autor: | E. Sánchez, J. M. Ruiz-Prieto, J. M. Ruiz-Roman, L. E. G. Cambronero |
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| Rok vydání: | 2003 |
| Předmět: |
6111 aluminium alloy
Materials science Metallurgy Alloy Metals and Alloys chemistry.chemical_element engineering.material 5005 aluminium alloy Microstructure Industrial and Manufacturing Engineering Computer Science Applications chemistry Aluminium Modeling and Simulation visual_art Ceramics and Composites 5052 aluminium alloy Aluminium alloy visual_art.visual_art_medium engineering 6063 aluminium alloy |
| Zdroj: | Journal of Materials Processing Technology. :378-383 |
| ISSN: | 0924-0136 |
| DOI: | 10.1016/s0924-0136(03)00424-2 |
| Popis: | Manufacturing of metal matrix composites (MMCs) through powder metallurgy route and their characterisation are the objects of the present work. Thus a light alloy reinforced with 5% of ceramics is obtained after attrition milling of mixed powders, die pressing, lubrication of compacts and hot extrusion into 10 mm diameter bars. Since 7xxx series of aluminium alloys show high mechanical properties, AA7015 alloy was chosen as metallic matrix and B 4 C, TiB 2 and Si 3 N 4 ceramics were added. After process optimisation, the microstructure of these materials shows a uniform distribution of ceramics in the aluminium alloy matrix. Physical properties like density, conductivity and coefficient of linear dilatation were determined on extruded MMCs samples. Hardness and tensile strength properties on machined samples according to ISO 2740 standard were evaluated. Also wear behaviour using a pin-on disk test was studied, within a microstructure study, which was carried out using optical and scanning electron microscopy. |
| Databáze: | OpenAIRE |
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