About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Microparticle Impact Testing at Elevated Temperatures |
Author(s) |
Ian Dowding, Christopher Schuh |
On-Site Speaker (Planned) |
Ian Dowding |
Abstract Scope |
High strain-rate mechanical testing has recently become possible using laser-launched microparticle impacts on test substrates. Here we discuss the extension of such impact tests to elevated temperatures. Using in-situ high velocity microparticle impact testing, we experimentally investigate single hard-particle impacts on a soft, low-melting temperature substrate of tin, as a function of substrate temperature. Through post mortem analysis of impact sites, we assess the conditions needed for adiabatic melting, as well as microstructural effects of plasticity in the substrate. By identifying the onset of melting for each set of initial temperature conditions, we indirectly infer the temperature rise caused by the impact and its resulting large plastic strains. This in turn allows a quantitative estimate of the amount of heat generated by the impact. Extensions of the method to evaluate adiabatic heat evolution in more detail are also briefly described. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, |