Mechanisms of Nanoplasticity

With decreasing grain size different deformation mechanisms determine the plasticity of materials. In nanomaterials (grain size <100 nm) grain boundary mediated processes like emission and absorption of dislocations by grain boundaries and grain boundary sliding predominate. Here, texture provides a “fingerprint” of the deformation mechanisms because it accumulates the information on the activity of the slip and twinning systems as well as on grain boundary sliding processes. This will be demonstrated on Pd-Au solid solutions deformed by high pressure torsion.

Institution: 

Institut für Strukturphysik/Professur für Metallphysik, TU Dresden

Date: 
Thursday, January 19, 2017 - 13:00
Speaker: 
Prof. Dr. Werner Skrotzki