About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Understanding and Predicting Dynamic Behavior of Materials
|
Presentation Title |
On the Structural Characterization of Amorphous Phase Recovered from Laser Shock Compression |
Author(s) |
Shiteng Zhao, Marc Meyers |
On-Site Speaker (Planned) |
Shiteng Zhao |
Abstract Scope |
Shock induced amorphization has been discovered in laser shock experiments.Due to the presence of strong deviotoric shear stresses, the amorphous phase presented in the shock-recovered materials is intrinsically different from those made by rapid quenching. Using nanobeam electron diffraction, the structure of the amorphous phase can be studied with an unprecendented spatial resolution. The local symmetry as well as radial distribution function of the amoprhous phase can be computed, which can be used to infer the structural difference among the amorphous domains. Two dimensional strain field in the vicinity of the amoprhous bands can be mapped based on the local variation of the lattice constant. Considerable volumeric strain as well as shear strain coexisted, especially along the interface between the amoprhous and crystalline phases. |
Proceedings Inclusion? |
Undecided |