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Title: Chemical complexity induced local structural distortion in NiCoFeMnCr high-entropy alloy

Journal Article · · Materials Research Letters
ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [4];  [5];  [5]; ORCiD logo [1]
  1. Division of Materials Science and Technology, Oak Ridge National Laboratory, Oak Ridge, TN, USA
  2. Division of Materials Science and Technology, Oak Ridge National Laboratory, Oak Ridge, TN, USA, Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN, USA
  3. Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN, USA
  4. University of Chicago, Center for Advanced Radiation Sources, Chicago, IL, USA
  5. Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, USA

In order to study chemical complexity-induced lattice distortion in high-entropy alloys, the static Debye–Waller (D-W) factor of NiCoFeMnCr solid solution alloy is measured with low temperature neutron diffraction, ambient X-ray diffraction, and total scattering methods. Here, the static atomic displacement parameter of the multi-element component alloy at 0 K is 0.035–0.041 Å, which is obvious larger than that of element Ni (~0 Å). The atomic pair distance between individual atoms in the alloy investigated with extended X-ray absorption fine structure (EXAFS) measurements indicates that Mn has a slightly larger bond distance (~0.4%) with neighbor atoms than that of others.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC05-00OR22725
OSTI ID:
1483331
Alternate ID(s):
OSTI ID: 1456802
Journal Information:
Materials Research Letters, Journal Name: Materials Research Letters Vol. 6 Journal Issue: 8; ISSN 2166-3831
Publisher:
Informa UK LimitedCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 38 works
Citation information provided by
Web of Science

References (26)

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Cited By (3)

Critical Review of Chemical Complexity Effect on Local Structure of Multi-principal-Element Alloys journal August 2019
Effect of interstitial carbon on the evolution of early-stage irradiation damage in equi-atomic FeMnNiCoCr high-entropy alloys journal January 2020
Lattice Distortion and Phase Stability of Pd-Doped NiCoFeCr Solid-Solution Alloys journal November 2018

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