| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
30 Years of Nanoindentation with the Oliver-Pharr Method and Beyond
|
| Presentation Title |
Variable Strain Rate Stress-strain Behavior Using Displacement-controlled Spherical Nanoindentation |
| Author(s) |
Jeffrey M. Wheeler |
| On-Site Speaker (Planned) |
Jeffrey M. Wheeler |
| Abstract Scope |
Since the work of David Tabor, the promise of the extraction of stress-strain curves from indentation data has drawn extensive interest. However, despite significant progress from several groups in recent years, spherical indentation testing has not yet been widely adopted within the nanoindentation community. This is rather surprising, since spherical indentation offers a simpler, more cost-effective alternative to micro-compression of pillars fabricated by focused ion beam (FIB). One limitation of current techniques is the influence of pop-in displacement bursts on stress-strain curves. This can be overcome by using an intrinsically displacement-controlled indenter, which provides stress-drop information without loss in strain-resolution instead. In this work, the current state-of-the-art in spherical nanoindentation data analysis is reviewed and extended for use on displacement-controlled nanoindentation at variable strain rates. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, |