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Title: Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction

Abstract

Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). Furthermore, the origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Cornell Univ., Ithaca, NY (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1439946
Alternate Identifier(s):
OSTI ID: 1548100
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Materials & Design
Additional Journal Information:
Journal Volume: 155; Journal Issue: C; Journal ID: ISSN 0264-1275
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; High-entropy alloys; Lattice distortion; Synchrotron X-ray diffraction; Pair distribution function

Citation Formats

Tong, Yang, Jin, Ke, Bei, Hongbin, Ko, J. Y. P., Pagan, Darren C., Zhang, Yanwen, and Zhang, F. X. Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction. United States: N. p., 2018. Web. doi:10.1016/j.matdes.2018.05.056.
Tong, Yang, Jin, Ke, Bei, Hongbin, Ko, J. Y. P., Pagan, Darren C., Zhang, Yanwen, & Zhang, F. X. Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction. United States. https://doi.org/10.1016/j.matdes.2018.05.056
Tong, Yang, Jin, Ke, Bei, Hongbin, Ko, J. Y. P., Pagan, Darren C., Zhang, Yanwen, and Zhang, F. X. Sat . "Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction". United States. https://doi.org/10.1016/j.matdes.2018.05.056. https://www.osti.gov/servlets/purl/1439946.
@article{osti_1439946,
title = {Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction},
author = {Tong, Yang and Jin, Ke and Bei, Hongbin and Ko, J. Y. P. and Pagan, Darren C. and Zhang, Yanwen and Zhang, F. X.},
abstractNote = {Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). Furthermore, the origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.},
doi = {10.1016/j.matdes.2018.05.056},
journal = {Materials & Design},
number = C,
volume = 155,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:

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Cited by: 8 works
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Figures / Tables:

Fig. 1 Fig. 1: A schematic diagram of synchrotron X-ray diffractometry. ND and RD represent the normal direction and rolling direction, respectively.

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Works referencing / citing this record:

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.