About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
Presentation Title |
Influence of Crystal Orientation and Berkovich Tip Rotation on the Mechanical Characterization of Grain Boundaries in Molybdenum |
Author(s) |
Verena Maier-Kiener, Severin Jakob, Helmut Clemens, Reinhard Pippan |
On-Site Speaker (Planned) |
Verena Maier-Kiener |
Abstract Scope |
Interfaces like grain boundaries play a crucial role for the performance of modern metallic materials. For example, molybdenum is used for applications in harsh environments because of its outstanding mechanical and thermal properties. However, depending on the processing state, fracture occurs to a certain extent along the grain boundaries. A method for the mechanical characterization of individual grain boundaries is therefore desired.
A promising technique for this task is nanoindentation since it can achieve high spatial resolution of mechanical data without cumbersome sample preparation, thus allowing high throughput testing. It turns out, that the rotation of a pyramidal indenter can bias the observed hardness increase near an interface. The distinct influence of crystal orientation in combination with the indenter geometry will be discussed in detail. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |