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Title: Effects of two-temperature model on cascade evolution in Ni and NiFe

Abstract

We perform molecular dynamics simulations of Ni ion cascades in Ni and equiatomic NiFe under the following conditions: (a) classical molecular dynamics (MD) simulations without consideration of electronic energy loss, (b) classical MD simulations with the electronic stopping included, and (c) using the coupled two-temperature MD (2T-MD) model that incorporates both the electronic stopping and the electron-phonon interactions. Our results indicate that the electronic effects are more profound in the higher-energy cascades, and that the 2T-MD model results in a smaller amount of surviving damage and smaller defect clusters, while less damage is produced in NiFe than in Ni.

Authors:
 [1];  [2];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
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 Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1261385
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 124; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Two-Temperature Model; Ni; NiFe; Radiation Damage; Cascades

Citation Formats

Samolyuk, German D., Xue, Haizhou, Bei, Hongbin, and Weber, William J. Effects of two-temperature model on cascade evolution in Ni and NiFe. United States: N. p., 2016. Web. doi:10.1016/j.scriptamat.2016.06.028.
Samolyuk, German D., Xue, Haizhou, Bei, Hongbin, & Weber, William J. Effects of two-temperature model on cascade evolution in Ni and NiFe. United States. https://doi.org/10.1016/j.scriptamat.2016.06.028
Samolyuk, German D., Xue, Haizhou, Bei, Hongbin, and Weber, William J. Tue . "Effects of two-temperature model on cascade evolution in Ni and NiFe". United States. https://doi.org/10.1016/j.scriptamat.2016.06.028. https://www.osti.gov/servlets/purl/1261385.
@article{osti_1261385,
title = {Effects of two-temperature model on cascade evolution in Ni and NiFe},
author = {Samolyuk, German D. and Xue, Haizhou and Bei, Hongbin and Weber, William J.},
abstractNote = {We perform molecular dynamics simulations of Ni ion cascades in Ni and equiatomic NiFe under the following conditions: (a) classical molecular dynamics (MD) simulations without consideration of electronic energy loss, (b) classical MD simulations with the electronic stopping included, and (c) using the coupled two-temperature MD (2T-MD) model that incorporates both the electronic stopping and the electron-phonon interactions. Our results indicate that the electronic effects are more profound in the higher-energy cascades, and that the 2T-MD model results in a smaller amount of surviving damage and smaller defect clusters, while less damage is produced in NiFe than in Ni.},
doi = {10.1016/j.scriptamat.2016.06.028},
journal = {Scripta Materialia},
number = ,
volume = 124,
place = {United States},
year = {Tue Jul 05 00:00:00 EDT 2016},
month = {Tue Jul 05 00:00:00 EDT 2016}
}

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Works referencing / citing this record:

Domain decomposition of the two-temperature model in dl_poly_ 4
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Unique Challenges for Modeling Defect Dynamics in Concentrated Solid-Solution Alloys
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Effects of electronic excitation in 150 keV Ni ion irradiation of metallic systems
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A new approach for electronic heat conduction in molecular dynamics simulations
journal, August 2019

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Effects of electron–phonon coupling on damage accumulation in molecular dynamics simulations of irradiated nickel
journal, August 2019


Delayed damage accumulation by athermal suppression of defect production in concentrated solid solution alloys [Supplementary Data]
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