| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
Quantifying the response of metals at elevated temperatures and strain rates above 106 s-1 |
| Author(s) |
Ian Dowding, Christopher A. Schuh |
| On-Site Speaker (Planned) |
Ian Dowding |
| Abstract Scope |
Recently, high velocity in-situ microprojectile impact testing has provided quantitative insights into extreme strain rate deformation behavior of metals, without producing shock conflating effects. When combined with post-mortem characterization of impact craters, several independent measurements of strength can be assessed, namely the dynamic hardness and dynamic yield strength. By using hard particle impactors onto softer metal substrates, plasticity-related effects are isolated to the substrate, producing a clean measure of the mechanical response. Here, we show that when deformed at strain rates of ~ 107 s-1, not only do metals increase strength at elevated temperatures, but there are limits where this anomalous thermal hardening behavior breaks down. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, |