|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical Behavior of Nanostructured Materials
||L-147: Nanoindentation Response of Fe-10%Cr Structures with Voids: An Atomistic Study
||Mohammad Abu-Shams, Ishraq Shabib
|On-Site Speaker (Planned)
Molecular Dynamics (MD) simulations are performed to investigate the nanoindentation response of single crystal Fe-10%Cr structures containing voids of various sizes distributed over various spatial locations. For structures with smaller void clusters (e.g. radius r≤1.5Å), the load response with indentation depth shifts to a lower magnitude when the number of voids is increased and the voids are located closer to the indenter surface. For structures with larger single void (e.g. r≥3Å), the nature of the load-depth curve depends on the location of the void from the indenter surface. When the void is located closer to the indenter the load-displacement response deviates significantly from the response obtained in defect-free model. However, after a sufficiently large indentation depth the void collapses and the curve follows the defect-free response. The results reveal the nucleation of 1/2 <111> and <001> types of dislocations in various active slip planes.
||Planned: Supplemental Proceedings volume