|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical Behavior of Nanostructured Materials
||L-122: Projectile Induced Deformation Twinning in Nanocrystalline Aluminum
||Sichuang Xue, Zhe Fan, Olawale Lawal, Thevamaran Ramathasan, Yue Liu, Kaiyuan Yu, Edwin Thomas, Xinghang Zhang
|On-Site Speaker (Planned)
It has been shown both experimentally and computationally that deformation twinning and stacking faults form in nanocrystalline Al with high stacking fault energy. The response of nanocrystalline Al under shock loading remains less well understood. Here by using a micro-bullet enabled ballistic technique, we performed extensive microscopy studies on perforated nc Al films. Under the high-strain-rate deformation, deformation twins have been identified. Furthermore, broad incoherent twin boundaries were identified in perforated nanocrystalline Al. High-density dislocation networks have been observed in large grain (with a diameter exceeding 100 nm). Grain fragmentation and coarsening have also been identified.
||Planned: Supplemental Proceedings volume