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Numerical and Experimental Characterization of Elastic Properties of a Novel, Highly Homogeneous Interpenetrating Metal Ceramic Composite

Horny, Dominik; Schukraft, Joél; Weidenmann, Kay André; Schulz, Katrin

Abstract:
An interpenetrating aluminum–alumina composite is presented, based on a ceramic foam manufactured via a novel slurry-based route resulting in a highly homogeneous preform microstructure in contrast to other preform techniques. The metal matrix composite (MMC) is produced by infiltrating the open-porous ceramic preform with molten aluminum at 700 °C using a Argon-driven gas pressure infiltration process. The resulting MMC and the primary ceramic foam are investigated both numerically and experimentally in terms of microstructural characteristics. In addition, the mechanical behavior of the material as well as the structural and material interactions on the microscale are investigated. To characterize the MMC regarding mechanical isotropy, elastic properties are determined experimentally via ultrasonic phase spectroscopy (UPS). A fast Fourier transform (FFT) formulation is used to simulate the complex 3D microstructure with reasonable effort based on image-data gathered from highresolution X-ray computed tomography (CT) scans of the ceramic foam as computational grid. Simulations prove that the material properties are, indeed, considered as highly homogeneous with respect to the material microstructure. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000118777
Veröffentlicht am 19.06.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Computational Materials Science (IAM-CMS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2020
Sprache Englisch
Identifikator ISSN: 1438-1656
KITopen-ID: 1000118777
Erschienen in Advanced engineering materials
Verlag Deutsche Gesellschaft für Materialkunde e.V. (DGM)
Vorab online veröffentlicht am 19.03.2020
Nachgewiesen in Scopus
Web of Science
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