|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical Behavior of Nanostructured Materials
||L-130: Molecular Dynamics Study of the Creep Behavior of Metallic Glasses and Glass-composites
||Constanze Kalcher, Tobias Brink, Jochen Rohrer, Alexander Stukowski, Karsten Albe
|On-Site Speaker (Planned)
In contrast to crystals, where one can clearly distinguish between three different creep stages, the mechanism behind the high-temperature creep behavior of amorphous alloys is still unclear. In this work we present Molecular Dynamics simulations on the creep behavior of Cu64Zr36 metallic glass which is a prototypical binary glass former that is well described by EAM potentials. We analyze how the creep rate is altered in the presence of secondary crystalline CuZr-B2 phases, which are known to enhance the mechanical properties at room temperature. As opposed to the pristine glass, creep resistance is decreased in the composites. Moreover, it can be observed that not only the size of the interface, but also the topology of the secondary phase plays a strong role in the creep behavior of the composites. We propose an explanation in terms of different mean Schmid factors of the interfaces.
||Planned: Supplemental Proceedings volume