Project Details
Projekt
Investigations into the segregation behavior and line tension of triple lines in tricrystals of copper alloys
Subject Area
Thermodynamics and Kinetics as well as Properties of Phases and Microstructure of Materials
Term
from 2012 to 2014
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 211077408
It is proposed to combine tomographic atom probe characterization and atomic force microscopy to measure the segregation of alloying elements in copper to grain boundary triple junction lines and its effect on triple junction energy. This will be achieved by a measurement of the force equilibrium at a triple junction as established by the curvature of the adjourning grain boundary grooves at the root of the triple junction. A corresponding theoretical basis has been developed and first measurements on specimens of pure copper with random triple junction crystallography have been conducted. This methodology will be utilized in conjunction with tomographic atom probe analysis on tricrystals with defined triple line crystallography. It is expected that the obtained information can serve as a tool for grain boundary engineering at the nanoscale.
DFG Programme
Research Grants
