Dynamic properties of FeCrMnNi, a High Entropy Alloy
- Mission Support and Test Services, LLC (MSTS), North Las Vegas, NV (United States)
The goal of this paper was to assess the dynamic properties of a new class of materials, High entropy alloys (HEAs). Specifically, gas gun experiments coupled with recovery were performed on a specific HEA, FeCrMnNi, to measure its equation of state (EOS) and its spall strength, which is a measure of the stress required to nucleate voids under shock loading conditions. While there has been a plethora of work performed to assess the mechanical properties of these HEAs under uniaxial stress conditions as a function of strain rate, investigation of its properties in dynamic extremes remains rare. The current work fills this gap in knowledge for this novel class of materials. Our results show that the measured EOS for this material at one velocity was in reasonable agreement with an estimated Hugoniot. Furthermore, while the spall strength for this material was found to be ~1.9 GPa, with some variation based on sample location, the main failure mode wasbrittle. This brittle failure leading to formation of cracks in the material is different than the ductile failure observed in pure iron and its alloys. DOE/NV/03624--1298
- Research Organization:
- Nevada National Security Site/Mission Support and Test Services LLC (NNSS/MSTS), North Las Vegas, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- DOE Contract Number:
- DE-NA0003624
- OSTI ID:
- 1846572
- Report Number(s):
- DOE/NV/03624-1298; STIP WF - 29441965
- Journal Information:
- Materials Science and Engineering: A https://www.journals.elsevier.com/materials-science-and-engineering-a, Journal Name: Materials Science and Engineering: A https://www.journals.elsevier.com/materials-science-and-engineering-a
- Country of Publication:
- United States
- Language:
- English
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