Dubrovnik, Croatia, September 15-18, 2019

Fracture Toughness of Tungsten, physical mechanism, experiments, and simulations

Reinhard Pippan, Erich Schmid Institute of Materials Science of the Austrian Academy of Sciences

We have performed in the last few years theoretical as well as experimental studies to investigate fracture relevant phenomena of tungsten. A summary of the results will be presented in this presentation. The theoretical studies are based on density function theory analyses of dislocation mobility and the effect of impurities on decohesion energy. The experimental studies are mainly focused on the variation of the fracture toughness as a function temperature, microstructure, and sample size effects.