Topic: Texture: The “fingerprint” of deformation mechanisms in nanomaterials

Speaker: Prof. Werner Skrotzki
　　　　　Institut für Strukturphysik, Technische Universität Dresden, Germany

Time: 10:30-11:30, Monday, August 1, 2016

Venue: Room 468, Lee Hsun Building, IMR CAS

Welcome to attend!

Abstract：

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 (Skrotzki et al., 2013). 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.

Skrotzki, W., Eschke, A., Jonas, B., Ungar, T., Toth, L., Ivanisenko, Yu. and Kurmanaeva, L., 2013. New experimental insight into the mechanisms of nanoplasticity. Acta Mater. 61, 7271 – 7284. DOI: 10.1016/j.actamat.2013.08.032.