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Background: Understanding the dynamics of deformation processes is of interest for determining the dominant thermally activated processes during plasticity  and fracture [2, 3]. Strain rate jump (SRJ) tests have been recently introduced to investigate intrinsic deformation mechanisms and have been successfully utilized on some nanomechanical test platforms [4–6]. Objective: The goal is to create standardized SRJ testing and analysis protocols for Hysitron nanoindenters, which cannot be found in literature, besides our previous work . Methods: Presented here is software to create SRJ test load functions for the TI980, which could be adapted to other instruments, and standardized protocols for analyzing the associated data. Results: These protocols are validated using single crystal tungsten as a model material and agree well with literature values from other instruments. Conclusions: New freely available software, validated on single crystal tungsten, creates opportunities for others to investigate intrinsic deformation mechanisms in more complex systems.
Bibliographical noteFunding Information:
Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. NAM and KMS acknowledge support by DOE-NE’s Advanced Fuels Campaign through a Los Alamos National Laboratory subcontract number 536246.
© 2022, Society for Experimental Mechanics.
- Activation volume
- Hysitron TI980
- Mechanical properties
- Mechanical testing
- Strain rate sensitivity
- Triboindenter 980