Characterization of aluminum alloy microstructures by means of synchrotron X-ray micro-tomography – a simple toolchain for extracting quantitative 3D morphological features
| Autor: | Simon Zabler, Randolf Hanke, Maximilian Ullherr, Christian Fella, Christoph Schweizer |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Alloy Metals and Alloys X-ray 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Toolchain Synchrotron Characterization (materials science) law.invention law 0103 physical sciences Ultimate tensile strength Materials Chemistry engineering Metallography Physical and Theoretical Chemistry Composite material 0210 nano-technology |
| Zdroj: | International Journal of Materials Research. 111:32-39 |
| ISSN: | 2195-8556 1862-5282 |
| DOI: | 10.3139/146.111854 |
| Popis: | One fundamental topic in metallography is determining relations between microscopic arrangements of phases and defects, and macroscopic properties (such as tensile strength, effective stiffness tensor, effective conductivity, permeability) which are important for materials application. For multiphase materials such as aluminum–silicon alloys our work demonstrates how – in particular – three-dimensional geometric microstructure characteristics, such as particle sphericity, connectivity and contiguity can be measured accurately from 3D X-ray computed tomography scans. This study details a simple yet very effective imaging toolchain for measuring these quantities. By tailoring the three-dimensional morphology of the alloys’ phases through composition, cooling and thermo-mechanical treatment one can establish a multidimensional materials database. For a given function and application, such a database would allow for optimized selection of alloy and processing, e.g. using a material which is specifically designed and produced according to its properties. The extraction of meaningful stochastic parameters from 3D CT scans of metallic alloys is therefore highly important. |
| Databáze: | OpenAIRE |
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