|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||Bulk Metallic Glasses Composites Produced via Severe Plastic Deformation
||Lisa Kraemer, Verena Maier, Karoline Kormout, Daria Setman, Yannick Champion, Reinhard Pippan
|On-Site Speaker (Planned)
Bulk metallic glasses (BMGs) are a relatively new class of materials, which were strongly investigated in the last years. A further step improving BMGs is producing BMG composites in which the second phase is another metallic glass or a nanocrystalline metall. A promising route is Severe Plastic Deformation, e.g. High Pressure Torsion (HPT).
In this work the specimens, which were fabricated via HPT, were investigated with different micromechanical testing methods, such as nanoindentation, in-situ SEM micropillar compression, and finally in-situ TEM picoindentation to characterize the deformation behavior under ambient but also non-ambient conditions. Deformation behavior and so mechanical properties change due to the second phase. A change in hardness, Young’s Modulus, fracture strength and fracture strain can be observed. Additional XRD, TEM, SEM and DSC investigation help to understand the structural evolution as the state of mixture or relaxation during the HPT-process or the formation of shear bands.
||Planned: A print-only volume