Alexander Hartmaier

TL;DR: In this paper, it was shown that the transition from ductile response to brittle fracture with decreasing temperature is controlled by dislocation mobility rather than by nucleation, and that this transition is often restricted by structural applications.

TL;DR: In this paper, two different damage mechanics methods were employed to study the interaction between failure modes in dual phase (DP) steels by means of a representative volume element (RVE).

TL;DR: Using molecular-dynamics simulation, this article simulated nanoindentation into the three principal surfaces of Cu and Al in the elastic regime, the simulation data agree fairly well with the linear elastic theory of indentation into an elastically anisotropic substrate with increasing indentation depth.

TL;DR: In this paper, the early phase of plastic deformation during nanoindentation with the help of large-scale molecular dynamics simulations is studied, and a skeletonization method to simplify defect structures in atomistic simulations enables direct observation and quantitative analysis of dislocation nucleation and multiplication processes occurring in the bulk as well as at the surface.

TL;DR: In this paper, the authors compare simulations based on a realistic many-body interaction potential of the embedded-atom-method type with two simple pair potentials, a Lennard-Jones and a Morse potential, and find that these potentials predict the formation of too large dislocation loops, the too rapid expansion of partials, too little cross slip and a severe overestimation of work hardening.