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Title: Effects of temperature on the irradiation responses of Al0.1CoCrFeNi high entropy alloy

Journal Article · · Scripta Materialia
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  1. Peking Univ., Beijing (China). Center for Applied Physics and Technology; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
  3. Nanjing Univ. (China). Herbert Gleiter Inst. of Nanoscience
  4. Peking Univ., Beijing (China). Center for Applied Physics and Technology
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering

Structural damage and chemical segregation in Al0.1CoCrFeNi high entropy alloy irradiated at elevated temperatures are studied using transmission electron microscopy (TEM) and atom probe tomography (APT). Irradiation-induced defects include dislocation loops, long dislocations and stacking-fault tetrahedra, but no voids can be observed. Furthermore, as irradiation temperature increases, defect density is decreased but defect size is increased, which is induced by increasing defect mobility. Finally, APT characterization reveals that ion irradiation at elevated temperatures can induce an enrichment of Ni and Co as well as a depletion of Fe and Cr at defect clusters, mainly including dislocation loops and long dislocations.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC05-00OR22725; SC0006661; 2015GB113000
OSTI ID:
1399376
Alternate ID(s):
OSTI ID: 1549280
Journal Information:
Scripta Materialia, Vol. 144, Issue C; ISSN 1359-6462
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 83 works
Citation information provided by
Web of Science

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Cited By (5)

Effects of Al and Ti Additions on Irradiation Behavior of FeMnNiCr Multi-Principal-Element Alloy journal October 2019
Vacancy and interstitial atom evolution with the separation of the nanoscale phase in Fe–Cr alloys: phase-field simulations journal January 2020
Irradiation responses and defect behavior of single-phase concentrated solid solution alloys journal September 2018
Enhanced surface bombardment resistance of the CoNiCrFeMn high entropy alloy under extreme irradiation flux journal October 2019
Evaluation of Radiation Response in CoCrFeCuNi High-Entropy Alloys journal October 2018