Shock Compression Response of a Single-Crystal Austenitic Stainless Steel
ORAL
Abstract
Austenitic stainless steels are easily machined and exhibit high strength and corrosion resistance, making them ideal materials for a large variety of engineering applications. Mesoscale models of polycrystalline austenitic stainless steels require knowledge of the orientation-dependent properties of the constituent grains. In this work, we provide preliminary dynamic material property results from shock compression experiments of a single-crystal austenitic stainless steel (FeCr18Ni12.5). Samples oriented in the [100], [110], and [111] directions were compressed to peak stresses up to 12 GPa via plate impact using the single-stage air gun at the Shock Thermodynamics and Applied Research (STAR) facility at Sandia National Laboratories (SNL). Free surface velocity measurements provided by photonic Doppler velocimetry (PDV) and the velocity interferometry system for any reflector (VISAR) were used to compare the Hugoniot, Hugoniot elastic limit, and spall strength along the three principal crystallographic directions.
*Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525. This work describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the work do not necessarily represent the views of the U.S. Department of Energy or the United States Government.
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Presenters
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Nathan Brown
- Sandia National Laboratories