Nichtlineare mechanische Reaktion von unterkühlten Schmelzen unter angelegten Kräften

• Antragsteller: Professor Dr. Matthias Fuchs; Professor Dr. Thomas Voigtmann
• Fachliche Zuordnung: Statistische Physik, Nichtlineare Dynamik, Komplexe Systeme, Weiche und fluide Materie, Biologische Physik
• Förderung: Förderung von 2010 bis 2015
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 157463299

We study the nonlinear response of supercooled melts and glass formers to time-dependent, strong applied stresses. To discover whether and when metallic and colloidal glasses yield homogeneously or locally under applied stress, a microscopic theory is developed, based on the integration through transients (ITT) approach in combination with a generalization of inhomogeneous mode-coupling theory (i-MCT). Spatially dependent elastic and plastic deformations, yielding and flow are studied, and microscopic mechanisms leading to strain localization are investigated, to provide insights into the transport mechanisms in melts and amorphous solids far from equilibrium.

• DFG-Verfahren: Forschungsgruppen
• Teilprojekt zu: FOR 1394: Nonlinear response to probe vitrification