skip to main content


This content will become publicly available on January 10, 2019

Title: Evolution of ion damage at 773K in Ni- containing concentrated solid-solution alloys

Quantitative analysis of the impact of the compositional complexity in a series of Ni-containing concentrated solid-solution alloys, Ni, NiCo, NiFe, NiCoCr, NiCoFeCr, NiCoFeCrMn and NiCoFeCrPd, on the evolution of defects produced by 1 MeV Kr ion irradiation at 773 K is reported in this paper. The dynamics of the evolution of the damage structure during irradiation to a dose of 2 displacements per atom were observed directly by performing the ion irradiations in electron transparent foils in a transmission electron microscope coupled to an ion accelerator. The defect evolution was assessed through measurement of the defect density, defect size and fraction of perfect and Frank loops. These three parameters were dependent on the alloying element as well as the number of elements. The population of loops was sensitive to the ion dose and alloy composition as faulted Frank loops were observed to unfault to perfect loops with increasing ion dose. Finally, these dependences are explained in terms of the influence of each element on the lifetime of the displacement cascade as well as on defect formation and migration energies.
 [1] ;  [1] ;  [2] ;  [2] ;  [3]
  1. Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  3. Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics. Dept. of Materials Science and Engineering
Publication Date:
Grant/Contract Number:
AC05-00OR22725; DMR-1121288
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 501; Journal ID: ISSN 0022-3115
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Nuclear Energy (NE); National Science Foundation (NSF)
Country of Publication:
United States
36 MATERIALS SCIENCE; concentrated solid-solution alloys; in situ ion irradiation; defect evolution; defect migration
OSTI Identifier: