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- Title
Rolling of cast Al-SiCp particulate metal matrix composites and strip mechanical properties Walzen von gegossenem, mit Al-SiCp partikelverstärktem Metall-Matrix Verbundwerkstoff und mechanische Eigenschaften der Bänder.
- Authors
Taha, M. A.; EL-Sabbagh, A. M.; Soliman, M.; Palkowski, H.
- Abstract
Thermomechanical physical simulation is applied to get the optimum hot rolling parameters of aluminium silicon carbide composites. Wrought Al 6061 and 6082 - Silicon carbide particulate (SiCp) metal matrix composite strips are prepared by stir-casting followed by sequential rolling assisted with intermediate heat treatment to allow crystallization recovery and further processing. SiCp are used in two microgrit grades; namely F500 and F800. The reinforcing particulates are used after surface oxidation and 0.3% Mg is added during melting and stirring for loss substitution. With the pre-treatments applied, SiCp are successfully inserted in the Al matrix, better wetting between particles and matrix, better particles distribution, less agglomeration and minimized reactions between SiC particles. Thermo-mechanical simulation as a tool for physical simulation indicates that rolling at 450°C using a rate of 1 s-1 rate represent suitable rolling conditions. Successive hot rolling resulted in decreasing void percent and SiCp agglomeration. Hence, enhanced mechanical properties are achieved.
- Subjects
METALLIC composites; SILICON carbide; MECHANICAL properties of metals; CRYSTALLIZATION; AGGLOMERATION (Materials)
- Publication
Materialwissenschaft und Werkstoffechnik, 2013, Vol 44, Issue 11, p914
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201300121