Alena Michalcova
University of Chemistry and Technology, Czech Republic
Biography
Alena Michalcová has completed her PhD from University of Chemistry and Technology in Prague and Postdoc Fellowship in Max-Planck Institute für Eisenforschung in Düsseldorf, Germany. She has published morethan 58 papers in reputed journals.
Abstract
Rapid solidification of alloys can be preformed e.g. by melt spinning method. This process leads to several changes in the microstructure, the main are increase of solubility of allying elements, microstructure refinement and formation of metastable phases such as quasicrystals. These microstructural features have prommising potential for self-healing behaviour of the material. Decomposition of supersaturated solid solution can lead to precipitation healing mechanism that was already proven in underaged aluminium alloy. Decomposition of quasicrystals can also cause closing of the crack in the alloy. The self-healing behaviour in the Al-Cr-Fe alloy was observed in this work. The alloy was studied by LM, SEM and TEM. Correlative SEM/AFM microscopy was also performed.