About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VII
|
Presentation Title |
Spherical Nanoindentation for Assessing Local Flow Curves – Influence of Environment and Microstructure |
Author(s) |
Verena Maier-Kiener, Gerald Schaffar |
On-Site Speaker (Planned) |
Verena Maier-Kiener |
Abstract Scope |
An appealing idea to material scientists is to characterize the flow behavior of materials with minimal experimental effort while guaranteeing highly reliable results. Although nanoindentation is established as standard method to extract easily hardness and Young’s modulus, the technique is not yet fully exploited regarding the determination of localized flow curves, Especially, tip imperfections have to be taken carefully into account, which sets one of the foundation for strain-rate controlled experiments and, thus, allows a reliable experimental evaluation of the constraint factor in consideration of the mechanical properties and induced strain. In this work these advanced protocols are applied at different temperatures in order to demonstrate temperature effects on e.g. the work hardening behavior. Moreover, different tip radii were applied to different microstructures in order to formulate a relationship between size effect, sphere radius and indentation depth. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Thin Films and Interfaces |