Project Details
Projekt
Material World Network: Theoretical, Computational and Experimental Studies of 3D Microstructural Evolution in Ultra-high Volume Fraction Coarsening System
Subject Area
Synthesis and Properties of Functional Materials
Term
from 2007 to 2011
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 43495629
A three-year research project is proposed to conduct theoretical, computational and experimental studies of three-dimensional phase coarsening in ultra-high-volume-fraction (V V 0.9 ) solid-liquid mixtures. The primary goals of this project are (1) to measure the three-dimensional microstructural evolution of two-phase systems in situ using timeresolved x-ray microtomography, thus revealing simultaneously the globally averaged kinetics of coarsening and the local migration of internal interfaces; (2) to conduct largescale phase-field simulations of 3-D phase coarsening at ultra-high V V , obtaining predictions regarding the global and local characteristics of the transformation; (3) to develop a new theory for phase-coarsening at ultra-high V V , thus filling the gap between the Lifshitz/ Slyozov/Wagner theory, which is valid at low V V , and theories for grain growth (V V 1.0 ); and (4) to test and improve the theory by comparing its predictions quantitatively to the results of simulation and experiment. The project is a collaborative effort between scientists in the USA, who will pursue the theoretical and computational aspects, and Germany, where the sample preparation and characterization via tomography will be carried out.
DFG Programme
Research Grants
International Connection
USA
Participating Persons
Professor Long-Qing Chen; Professor Ke-Gang Wang
