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Title: High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi

Abstract

High pressure x-ray diffraction measurements reveal that the face-centered cubic (fcc) high-entropy alloy CrMnFeCoNi transforms martensitically to a hexagonal close-packed (hcp) phase at ~14 GPa. We attribute this to suppression of the local magnetic moments, destabilizing the fcc phase. Similar to fcc-to-hcp transformations in Al and the noble gases, this transformation is sluggish, occurring over a range of >40 GPa. But, the behavior of CrMnFeCoNi is unique in that the hcp phase is retained following decompression to ambient pressure, yielding metastable fcc-hcp mixtures.

Authors:
 [1];  [1]; ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [1];  [5]
  1. Stanford Univ., CA (United States). Dept. of Geological Sciences
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering and Dept. of Nuclear Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
  5. Stanford Univ., CA (United States). Dept. of Geological Sciences; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Inst. for Materials and Energy Sciences
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Materials Science of Actinides (MSA); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1360058
Alternate Identifier(s):
OSTI ID: 1367849
Grant/Contract Number:  
AC05-00OR22725; SC0001089; SC0006661; NA0001974; FG02-99ER45775; AC02-06CH11357; NA0002006; AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; design, synthesis and processing; metals and alloys

Citation Formats

Tracy, Cameron L., Park, Sulgiye, Rittman, Dylan R., Zinkle, Steven J., Bei, Hongbin, Lang, Maik, Ewing, Rodney C., and Mao, Wendy L. High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi. United States: N. p., 2017. Web. doi:10.1038/ncomms15634.
Tracy, Cameron L., Park, Sulgiye, Rittman, Dylan R., Zinkle, Steven J., Bei, Hongbin, Lang, Maik, Ewing, Rodney C., & Mao, Wendy L. High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi. United States. doi:10.1038/ncomms15634.
Tracy, Cameron L., Park, Sulgiye, Rittman, Dylan R., Zinkle, Steven J., Bei, Hongbin, Lang, Maik, Ewing, Rodney C., and Mao, Wendy L. Thu . "High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi". United States. doi:10.1038/ncomms15634. https://www.osti.gov/servlets/purl/1360058.
@article{osti_1360058,
title = {High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi},
author = {Tracy, Cameron L. and Park, Sulgiye and Rittman, Dylan R. and Zinkle, Steven J. and Bei, Hongbin and Lang, Maik and Ewing, Rodney C. and Mao, Wendy L.},
abstractNote = {High pressure x-ray diffraction measurements reveal that the face-centered cubic (fcc) high-entropy alloy CrMnFeCoNi transforms martensitically to a hexagonal close-packed (hcp) phase at ~14 GPa. We attribute this to suppression of the local magnetic moments, destabilizing the fcc phase. Similar to fcc-to-hcp transformations in Al and the noble gases, this transformation is sluggish, occurring over a range of >40 GPa. But, the behavior of CrMnFeCoNi is unique in that the hcp phase is retained following decompression to ambient pressure, yielding metastable fcc-hcp mixtures.},
doi = {10.1038/ncomms15634},
journal = {Nature Communications},
number = ,
volume = 8,
place = {United States},
year = {2017},
month = {5}
}

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Cited by: 10 works
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    Works referencing / citing this record:

    Pressure-induced magnetovolume effect in CoCrFeAl high-entropy alloy
    journal, May 2019


    Twinning-induced strain hardening in dual-phase FeCoCrNiAl0.5 at room and cryogenic temperature
    journal, July 2018


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