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Title: Dynamic Properties of FeCrMnNi, a High Entropy Alloy

Abstract

High entropy alloys (HEAs) represent a new class of materials that potentially possess an ideal combination of high strength and ductility and may be candidate materials that can withstand high amounts of damage before failure, especially under extreme conditions. To this end, a series of shock/spall loading experiments were conducted on an Fe/Cr/Mn/Ni HEA to assess not only its equation of state (EOS) but also its resistance to damage and failure. A single-stage light gas gun was used to conduct a series of flyer plate symmetric impact experiments coupled with recovery of the samples for post-mortem microstructural analysis to obtain fundamental understanding regarding the damage morphology. Our results show that the measured EOS for this alloy was in reasonable agreement with an estimated Hugoniot value. Additionally, the spall strength of these alloys was found to vary between 1.4 and 1.9 GPa within the same plate but was comparable to other iron-based conventional alloys. DOE/NV/03624--1059

Authors:
 [1];  [1];  [1];  [2];  [2];  [3]
  1. Mission Support and Test Services, LLC (MSTS), North Las Vegas, NV (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Nevada National Security Site (NNSS), North Las Vegas, NV (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
OSTI Identifier:
1773072
Report Number(s):
DOE/NV/03624-1059
STIP WF - 23555154
DOE Contract Number:  
DE-NA0003624
Resource Type:
Journal Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Name: Acta Materialia
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; high entropy alloy, shock physics, PDV, metallurgical characterization

Citation Formats

Hawkins, Michelle C, Thomas, Sarah A, Hixon, R S, Gigax, J, Li, N, and Fensin, S. Dynamic Properties of FeCrMnNi, a High Entropy Alloy. United States: N. p., 2021. Web.
Hawkins, Michelle C, Thomas, Sarah A, Hixon, R S, Gigax, J, Li, N, & Fensin, S. Dynamic Properties of FeCrMnNi, a High Entropy Alloy. United States.
Hawkins, Michelle C, Thomas, Sarah A, Hixon, R S, Gigax, J, Li, N, and Fensin, S. 2021. "Dynamic Properties of FeCrMnNi, a High Entropy Alloy". United States. https://www.osti.gov/servlets/purl/1773072.
@article{osti_1773072,
title = {Dynamic Properties of FeCrMnNi, a High Entropy Alloy},
author = {Hawkins, Michelle C and Thomas, Sarah A and Hixon, R S and Gigax, J and Li, N and Fensin, S},
abstractNote = {High entropy alloys (HEAs) represent a new class of materials that potentially possess an ideal combination of high strength and ductility and may be candidate materials that can withstand high amounts of damage before failure, especially under extreme conditions. To this end, a series of shock/spall loading experiments were conducted on an Fe/Cr/Mn/Ni HEA to assess not only its equation of state (EOS) but also its resistance to damage and failure. A single-stage light gas gun was used to conduct a series of flyer plate symmetric impact experiments coupled with recovery of the samples for post-mortem microstructural analysis to obtain fundamental understanding regarding the damage morphology. Our results show that the measured EOS for this alloy was in reasonable agreement with an estimated Hugoniot value. Additionally, the spall strength of these alloys was found to vary between 1.4 and 1.9 GPa within the same plate but was comparable to other iron-based conventional alloys. DOE/NV/03624--1059},
doi = {},
url = {https://www.osti.gov/biblio/1773072}, journal = {Acta Materialia},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 31 00:00:00 EDT 2021},
month = {Wed Mar 31 00:00:00 EDT 2021}
}