Abstract
As a special kind of gas/metal matrix composites with potential application prospects, porous metals have high specific strength integrated with special functional properties. However, since the gas phase in porous metals hardly contributes to the absolute mechanical properties, the properties of porous metals still need to be improved. In this study, Mg/Al-ordered structure composites were prepared successfully by infiltrating the commercial pure magnesium into the ordered porous aluminum to replace the gas phase with the purpose of improving compressive properties. Aiming at decreasing casting defects, the infiltration process of Mg/Al-ordered structure composites was simulated by the software ProCAST to optimize the infiltration temperature and preheated temperature. The results of the quasi-static compression test indicated that the stress-strain curves of Mg/Al-ordered structure composites were similar to the porous metals. There was still stress plateau on the stress-strain curve. Furthermore, the compressive strength and plateau stress were improved obviously compared with the ordered porous aluminum. During the compression deformation, the ordered porous aluminum acted as the skeleton with great plasticity and ductility while the commercial pure magnesium as filler expressed lightweight and high strength. Co-continuous commercial pure aluminum and magnesium with ordered structure led to excellent compressive properties of Mg/Al-ordered structure composites.
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Acknowledgements
This work was supported by the National Key Research and Development Program of China (grant numbers 2016YFB0701204).
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Wang, H., Fu, Y., Su, M., Hao, H. (2019). Study on Fabrication and Compressive Properties of Mg/Al-Ordered Structure Composites. In: Han, Y. (eds) Physics and Engineering of Metallic Materials. CMC 2018. Springer Proceedings in Physics, vol 217. Springer, Singapore. https://doi.org/10.1007/978-981-13-5944-6_45
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DOI: https://doi.org/10.1007/978-981-13-5944-6_45
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