Anisotropy of interphase boundaries in multiscale composite growth structures

• Applicants: Dr.-Ing. Ulrike Hecht; Professor Dr. Jürgen Horbach
• Subject Area: Thermodynamics and Kinetics as well as Properties of Phases and Microstructure of Materials
• Term: from 2014 to 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 263712789

ANPHASES project aims at a first-ever integrated study of pattern and texture formation in multiphase hierarchical structures driven by anisotropy of interphase boundaries (IB). Eutectics from the model system Al-Al2Cu-Ag2Al were selected; they display particular crystal-crystal orientation relationships with remarkably different IB properties, being excellent candidates for a systematic fundamental analysis of anisotropy effects on selforganization during growth and coarsening. Molecular-dynamics computations (MD) and phase-field simulations (PF) will be performed in interaction with innovative in-situ experiments to reveal the effects of IB anisotropy. Conclusive results on the emergence of collective order and on competitive growth of eutectic grains will be obtained. The project will lead to long awaited theoretical amendments to the theory of eutectic growth, to formalized ICME links between MD and PF and will open the way to knowledge-based novel micro-composites structures.

• DFG Programme: Research Grants
• International Connection: France
• Participating Persons: Professorin Dr. Sabine Bottin-Rousseau; Professor Dr. Mathis Plapp