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MM: Fachverband Metall- und Materialphysik

MM 40: Topical session: In-situ Microscopy with Electrons, X-Rays and Scanning Probes in Materials Science IV - Atomic structure and defects III

MM 40.4: Vortrag

Mittwoch, 9. März 2016, 17:00–17:30, H38

Nanostructured Metallic Glasses: Tailoring the Mechanical Properties of Amorphous Metals — •Karsten Albe, Tobias Brink, and Omar Adjaoud — TU Darmstadt, Fachbereich Material -und Geowissenschaften, FG Materialmodellierung, Jovanka-Bontschits-Str. 2, D-64287 Darmstadt

The mechanical properties of metallic glasses can not only be influenced by their chemical composition, but also by their nanostructure: Secondary phases in the form of precipitates, as well as a glass-glass interfaces are possible means to enhance the plasticity of the material. In this contribution results from molecular dynamics simulations of nanostructured Cu-Zr based metallic glasses under external load will be discussed and compared with experimental findings, especially with results from transmission electron microscopy. The influence of crystalline nanoprecipitates on shear band nucleation and propagation is investigated, and also the effect of grain size and composition on the deformation behavior of nanoglasses and nanoglass composites.