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Title: X-ray absorption investigation of local structural disorder in Ni 1-xFe x (x=0.10, 0.20, 0.35, and 0.50) alloys

Abstract

Defect energetics in structural materials has long been recognized to be affected by specific alloy compositions. Significantly enhanced radiation resistance has recently been observed in concentrated solid-solution alloys. However, the link between local structural disorder and modified defect dynamics in solid solutions remains unclear. To reveal the atomic-level lattice distortion, the local structures of Ni and Fe in Ni 1-xFe x (x=0.1, 0.2, 0.35 and 0.5) solid solution alloys were measured with extended X-ray absorption fine structure (EXAFS) technique. The lattice constant and the first-neighbor distances increase with the increase of Fe content in the solid solutions. EXAFS measurements have revealed that the bond length of Fe with surrounding atoms is 0.01-0.03 larger than that of Ni in the alloy systems. Debye-Waller factor of the Fe-Fe bonds in all the systems is also slightly larger than that of the Ni-Ni bond. EXAFS fitting suggests that the local structural disorder is enhanced with the addition of Fe elements in the solid solution. The local bonding environments from ab initio calculation are in good agreement with the experimental results, which suggest that the Fe has a larger first-neighbor bonding distance than that of Ni, and thus Ni atom inside the Ni-Fe solidmore » solution alloys undergoes compressive strain.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [4];  [1];  [1];  [5];  [1];  [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Earth and Environmental Sciences
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  4. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Collaborative Access Team (HPCAT)
  5. (United States). Dept. of Materials Science and Engineering
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1354651
Alternate Identifier(s):
OSTI ID: 1361860
Grant/Contract Number:  
AC05-00OR22725; AC02-06CH11357; FG02-99ER45775; NA0001974
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 121; Journal Issue: 16; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NiFe concentrated solid-solution alloys; EXAFS; local structure; disorder

Citation Formats

Zhang, Fuxiang X., Jin, Ke, Zhao, Shijun, Mu, Sai, Bei, Hongbin, Liu, Jiachao C., Xue, Haizhou Z., Popov, Dimitry, Park, Changyong, Stocks, George Malcolm, Weber, William J., Univ. of Tennessee, Knoxville, TN, Zhang, Yanwen, and Univ. of Tennessee, Knoxville, TN. X-ray absorption investigation of local structural disorder in Ni1-xFex (x=0.10, 0.20, 0.35, and 0.50) alloys. United States: N. p., 2017. Web. doi:10.1063/1.4982705.
Zhang, Fuxiang X., Jin, Ke, Zhao, Shijun, Mu, Sai, Bei, Hongbin, Liu, Jiachao C., Xue, Haizhou Z., Popov, Dimitry, Park, Changyong, Stocks, George Malcolm, Weber, William J., Univ. of Tennessee, Knoxville, TN, Zhang, Yanwen, & Univ. of Tennessee, Knoxville, TN. X-ray absorption investigation of local structural disorder in Ni1-xFex (x=0.10, 0.20, 0.35, and 0.50) alloys. United States. doi:10.1063/1.4982705.
Zhang, Fuxiang X., Jin, Ke, Zhao, Shijun, Mu, Sai, Bei, Hongbin, Liu, Jiachao C., Xue, Haizhou Z., Popov, Dimitry, Park, Changyong, Stocks, George Malcolm, Weber, William J., Univ. of Tennessee, Knoxville, TN, Zhang, Yanwen, and Univ. of Tennessee, Knoxville, TN. Thu . "X-ray absorption investigation of local structural disorder in Ni1-xFex (x=0.10, 0.20, 0.35, and 0.50) alloys". United States. doi:10.1063/1.4982705. https://www.osti.gov/servlets/purl/1354651.
@article{osti_1354651,
title = {X-ray absorption investigation of local structural disorder in Ni1-xFex (x=0.10, 0.20, 0.35, and 0.50) alloys},
author = {Zhang, Fuxiang X. and Jin, Ke and Zhao, Shijun and Mu, Sai and Bei, Hongbin and Liu, Jiachao C. and Xue, Haizhou Z. and Popov, Dimitry and Park, Changyong and Stocks, George Malcolm and Weber, William J. and Univ. of Tennessee, Knoxville, TN and Zhang, Yanwen and Univ. of Tennessee, Knoxville, TN},
abstractNote = {Defect energetics in structural materials has long been recognized to be affected by specific alloy compositions. Significantly enhanced radiation resistance has recently been observed in concentrated solid-solution alloys. However, the link between local structural disorder and modified defect dynamics in solid solutions remains unclear. To reveal the atomic-level lattice distortion, the local structures of Ni and Fe in Ni1-xFex (x=0.1, 0.2, 0.35 and 0.5) solid solution alloys were measured with extended X-ray absorption fine structure (EXAFS) technique. The lattice constant and the first-neighbor distances increase with the increase of Fe content in the solid solutions. EXAFS measurements have revealed that the bond length of Fe with surrounding atoms is 0.01-0.03 larger than that of Ni in the alloy systems. Debye-Waller factor of the Fe-Fe bonds in all the systems is also slightly larger than that of the Ni-Ni bond. EXAFS fitting suggests that the local structural disorder is enhanced with the addition of Fe elements in the solid solution. The local bonding environments from ab initio calculation are in good agreement with the experimental results, which suggest that the Fe has a larger first-neighbor bonding distance than that of Ni, and thus Ni atom inside the Ni-Fe solid solution alloys undergoes compressive strain.},
doi = {10.1063/1.4982705},
journal = {Journal of Applied Physics},
number = 16,
volume = 121,
place = {United States},
year = {2017},
month = {4}
}

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