|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||In-situ Investigation of Rate Dependent Material Properties under Non-ambient Conditions: Challenges, Limitations & Insights
||Reinhard Fritz, Alexander Leitner, Verena Maier, Daniel Kiener
|On-Site Speaker (Planned)
Thermally activated processes and time dependent material properties are of prime concern to determine the behavior of novel materials at, for example, high temperatures, during long-term loading, or regarding dynamic loading conditions. Moreover, driven by the ongoing trend in miniaturization, it is desired to enable determination of such properties on a local scale.
Therefore, in this work, we use advanced nanoindentation testing techniques as well as in-situ SEM micro-compression to determine thermally activated processes. In particular, both chosen approaches are capable of elevated testing temperatures. We will consider the possible influence of thermal drift, in particular on long temperature experiments, and show approaches to circumvent such issues. Subsequently, we will discuss the locally determined values of strain-rate sensitivity and activation volume to macroscopic bulk experiments on single crystal as well as ultra-fine grained materials fcc and bcc materials, respectively.
||Planned: EPD Congress Volume