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Title: Point defect evolution in Ni, NiFe and NiCr alloys from atomistic simulations and irradiation experiments

Journal Article · · Acta Materialia
 [1];  [2];  [1];  [1];  [1];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials and Technology Div.
  2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Sciences
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials and Technology Div.; Univ. of Tennessee, Knoxville, TN (United States). Materials Science and Engineering

Using molecular dynamics simulations, we elucidate irradiation-induced point defect evolution in fcc pure Ni, Ni0.5Fe0.5, and Ni0.8Cr0.2 solid solution alloys. We find that irradiation-induced interstitials form dislocation loops that are of 1/3 <111>{111}-type, consistent with our experimental results. While the loops are formed in all the three materials, the kinetics of formation is considerably slower in NiFe and NiCr than in pure Ni, indicating that defect migration barriers and extended defect formation energies could be higher in the alloys than pure Ni. As a result, while larger size clusters are formed in pure Ni, smaller and more clusters are observed in the alloys. The vacancy diffusion occurs at relatively higher temperatures than interstitials, and their clustering leads to formation of stacking fault tetrahedra, also consistent with our experiments. The results also show that the surviving Frenkel pairs are composition-dependent and are largely Ni dominated.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; AC02-05CH11231
OSTI ID:
1209216
Alternate ID(s):
OSTI ID: 1251431
Journal Information:
Acta Materialia, Vol. 99; Related Information: EDDE partners with Oak Ridge National Laboratory (lead); Lawrence Livermore National Laboratory; University of Michigan; University of Tennessee; University of Wisconsin; University of Wyoming; Virginia Tech; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 107 works
Citation information provided by
Web of Science

References (34)

A fracture-resistant high-entropy alloy for cryogenic applications journal September 2014
High-Entropy Alloys: A Critical Review journal April 2014
Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes journal May 2004
Microstructure characterization of Al x CoCrCuFeNi high-entropy alloy system with multiprincipal elements journal April 2005
Physical Properties of High Entropy Alloys journal December 2013
Segregation and migration of species in the CrCoFeNi high entropy alloy journal June 2014
Efficient Annealing of Radiation Damage Near Grain Boundaries via Interstitial Emission journal March 2010
Simulation of radiation damage in Fe alloys: an object kinetic Monte Carlo approach journal October 2004
Kinetically driven point-defect clustering in irradiated MgO by molecular-dynamics simulation journal April 2009
Kinetically evolving irradiation-induced point defect clusters in UO 2 by molecular dynamics simulation journal September 2009
Atomic-scale simulation of space weathering in olivine and orthopyroxene journal April 2015
Radiation-induced amorphization of ordered intermetallic compounds CuTi, CuTi 2 , and Cu 4 Ti 3 : A molecular-dynamics study journal March 1991
Comparison of point-defect clustering in irradiated CeO2 and UO2: A unified view from molecular dynamics simulations and experiments journal November 2011
A fast grain-growth mechanism revealed in nanocrystalline ceramic oxides journal July 2014
Radiation damage in cubic ZrO2 and yttria-stabilized zirconia from molecular dynamics simulations journal March 2015
Molecular dynamics simulation of radiation damage in bcc tungsten journal February 2007
The effect of prolonged irradiation on defect production and ordering in Fe–Cr and Fe–Ni alloys journal August 2011
Interatomic potential for studying ageing under irradiation in stainless steels: the FeNiCr model alloy journal October 2013
Interatomic potential to study plasticity in stainless steels: the FeNiCr model alloy journal November 2011
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Defect cluster formation in displacement cascades in copper journal June 2001
Comparative study of radiation damage accumulation in Cu and Fe journal January 2000
On the formation of stacking fault tetrahedra in irradiated austenitic stainless steels – A literature review journal November 2013
Story of stacking fault tetrahedra journal September 1997
Direct observations of defects in quenched gold journal January 1959
Atomistic simulation of stacking fault tetrahedra formation in Cu journal December 2000
Direct Transformation of Vacancy Voids to Stacking Fault Tetrahedra journal September 2007
Annealing of Pure Gold Quenched from above 800°C journal January 1963
Review: Evolution of stacking fault tetrahedra and its role in defect accumulation under cascade damage conditions journal July 2004
Nucleation process of stacking fault tetrahedra in gold studied by positron lifetime spectroscopy journal June 1985
Conversion of stacking fault tetrahedra to voids in electron irradiated Fe-Cr-Ni journal November 1986
On the Response of Ionic Crystals to Irradiation journal May 2013
Characterization of dislocation loops and chromium-rich precipitates in ferritic iron–chromium alloys as means of void swelling suppression journal May 2007
Characterization of irradiated single crystals of Fe and Fe–15Cr journal March 2009

Cited By (15)

Unique Challenges for Modeling Defect Dynamics in Concentrated Solid-Solution Alloys journal July 2017
Effects of Al and Ti Additions on Irradiation Behavior of FeMnNiCr Multi-Principal-Element Alloy journal October 2019
Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys journal December 2016
Influence of chemical disorder on energy dissipation and defect evolution in concentrated solid solution alloys journal October 2015
Classical interatomic potential for quaternary Ni–Fe–Cr–Pd solid solution alloys journal August 2018
Origin of radiation resistance in multi-principal element alloys journal October 2018
Effect of atomic order/disorder on Cr segregation in Ni-Fe alloys journal September 2018
Atomic-scale modeling of the thermodynamic and kinetic properties of dilute alloys driven by forced atomic relocations journal December 2019
Irradiation responses and defect behavior of single-phase concentrated solid solution alloys journal September 2018
Precipitation behavior of AlxCoCrFeNi high entropy alloys under ion irradiation journal August 2016
Shape Stability of Metallic Nanoplates: A Molecular Dynamics Study journal November 2019
Direct Observation of Defect Range and Evolution in Ion-Irradiated Single Crystalline Ni and Ni Binary Alloys journal February 2016
Atomic scale modeling of the thermodynamic and kinetic properties of dilute alloys driven by forced atomic relocations text January 2019
Analysis of strain and disordering kinetics based on combined RBS-channeling and X-ray diffraction atomic-scale modelling journal December 2020
Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys journal June 2017

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