Speaker
Description
In this talk I will review our recent results concerning critical-like statistics of dislocation avalanches, i.e., strain bursts observed in plastically deforming crystals, as obtained from two and three-dimensional discrete dislocation dynamics simulations. Specifically, I will discuss the “glassy” dislocation dynamics in pure crystals without any additional defects, as well as the depinning phase transition exhibited by dislocation
assemblies interacting with a quenched pinning field due to other defects in the crystal such as precipitates. Moreover, I will also discuss our recent attempts to employ machine learning to quantify the degree of predictability of the plastic deformation process, which in the case of small crystals exhibits significant sample-to-sample variability.
