Fabrication and Aging Behaviour of In-Situ Aluminum Composites
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Yaman Erarslan
Abstract
Commonly applied in situ procedures with the aim of producing alumina particles or whiskers include the reactions between a metal oxide and aluminum. The metal, reduced with the alumina formation reaction, afterwards generally reacts with Al and transforms into an intermetallic form which will act as a reinforcing member in the composition of the matrix. In this study, by adding CuO powder in ratios of 5, 10 and 15 wt.-% composite billets were produced by the in situ procedure of stir casting. XRD patterns and microstructures of the produced Al-Al2O3 composites were examined by using optical and electron microscopy (SEM). Following the homogenization procedure on the composite material, hot deformation and thermal aging procedures were applied. The changes in the mechanical properties were compared with commercially pure Aluminum.
Kurzfassung
Üblicherweise angewendete in-situ-Verfahren mit dem Ziel der Produktion von Alumnium-Partikeln oder Whiskern schließen Reaktionen zwischen einem Metalloxid und Alumnium ein. Dabei reagiert das durch die Bildung der Aluminide reduzierte Metall anschließend generell mit Aluminium und wandelt in eine intermetallische Form um, die als festigsteigerndes Element in der Matrix wirkt. In der diesem Beitrag zugrunde liegenden Studie wurden Kompositproben mit dem in-situ-Verfahren des Rührgießens hergestellt, wobei CuO-Pulver in Anteilen von 5, 10 und 15 wt.-% zugemischt wurde. Die so hergestellten Al-Al2O3 Kompositwerkstoffe wurden mittels XRD sowie optischer und Rasterlektronenmikroskopie untersucht. Nach einer entsprechenden Homogenisierung wurden Warmwalz- und thermische Alterungsverfahren angewendet. Die Änderung der mechanischen Eigenschaften wurde mit kommerziellem Reinaluminium verglichen.
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- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Leichtbaupotenzial zyklisch belasteter Laserstrahl-Hybridschweißverbindungen aus S1100QL
- Bio-Medical Materials in Human Joint Implants — A Review
- Optimization of Compression Moulding Temperature for Polypropylene Materials
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- Evaluating Waste Marble Dust as Floor Tile
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- Fabrication and Aging Behaviour of In-Situ Aluminum Composites
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