|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Orientational Dependence of Shock Induced Phase Transition of Single Crystal Copper
||Anupam Neogi, Nilanjan Mitra
|On-Site Speaker (Planned)
A series of large scale non-equilibrium molecular dynamics (NEMD) simulations of single crystalline copper has been carried out to investigate the shock induced plastic phenomenon, including phase transition, if any. Nucleation of body-centered tetragonal (BCT) phase has been observed to occur in high symmetry crystal orientation, like, <100> at an impact velocity of 1.5 km/s. For the shock wave propagation along the lower symmetry crystal orientation, like, <110> body-centered orthorhombic (BCO) phase has been observed to comprise the deformed microstructure at an impact velocity of 2.0 km/s. In <111> no such solid-to-solid phase transformation has been identified. Adaptive common neighbor analysis (CNA), pair-distribution function, g(r) and also x-ray diffraction pattern analysis techniques has been used as a probing tool to identify those transformed phases with sufficient accuracy. Details analysis and quantification of the nucleated phases will be discussed in this presentation.
||Planned: Supplemental Proceedings volume