|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||K-84: High Strain Rate Nanoindentation of Single Crystalline Metals
||Wesley Higgins, George Pharr
|On-Site Speaker (Planned)
Advances and improvements in nanoindentation systems and their electronics offer the capability of using advanced testing methodologies, high speed testing techniques, and higher data acquisition rates (100kHz). This presents the opportunity to measure and explore the response of materials undergoing fast deformation rates at small scales. Results for high strain rate nanoindentation testing performed on single crystalline materials using a commercially available nanoindenter will be presented. These results show that a wide range of nanoindentation strain rates (greater than 10^3/s) can be achieved in one test, much higher than conventional nanoindentation methods. Understanding the capabilities of the instrument and accounting for time constants and dynamic contributions during testing is crucial to experimental design and to analyzing raw data to achieve meaningful results. The fundamental understanding of these results can provide a basis for simulations to analyze the small scale mechanical response of dynamic and complex materials used in various applications.