|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Mechanical Behavior at the Nanoscale III
||W-32: Deformation Behavior and Shear Band Evolution of Phase Separating Metallic Glass
||Jinwoo Kim, Eun Soo Park, Andrew M. Minor
|On-Site Speaker (Planned)
Various composite microstructures with amorphous matrix have been developed, and they are expected to result in nucleation of multiple shear bands and interruption of their propagation, which can lead to enhanced plasticity of metallic glasses. Phase separating metallic glass(PS-MG) is a special composite material, which has two different amorphous phases solidified after in-situ phase separation during cooling from a single liquid. Despite the expectation for enhanced plasticity from amorphous secondary phases, generally PS-MGs show extreme brittleness and this was considered as being originated from weak interfaces between the amorphous phases. However, the role of phase interface in determining plasticity of PS-MGs has not been systematically reported. In this study, deformation behavior and shear band evolution in PS-MGs affected by phase interface were investigated using micro-/nano-pillars. These results provide us with new insights on the role of amorphous secondary phases and their interfaces in enhancing mechanical properties of metallic glass-matrix composites.
||Planned: A print-only volume