Abstract
Oxide Dispersed Strengthened (ODS) alloys are considered as a potential candidate for future generation reactors and can even be graded as better radiation resistant materials than the ones already in use. Molecular dynamics (MD) simulation study for defect sinks properties of ODS alloys have been investigated at 700K using LAMMPS (Atomic/Molecular massively parallel simulator software. SRIM (stopping range of ions in matter) code was used to see the approximate range of the ions and damage cascade profile. It has been observed that the oxide particle attracts vacancies/interstitials produced in the base matrix near the interface. The modeled structure looked amorphous near the interface but appears crystalline in the rest region. The modeled structure has defect sink property near the interface. The area for vacancy/interstitial cluster shrinks with the time evolution. Initially, the defects are found scattered near the interface but with time evolution, these recombine and annihilate. After the bombardment Fe atoms show better recover than the oxides, thus it could be concluded that Fe has more tendency to recover than oxide. This atomistic investigation would be beneficial to analyze the multiscale behavior determination of the materials being experimented under severe conditions. This defect sink behavior study would help to assess better radiation resistant materials for the current and future generation reactors.
Recommended Citation
M. M. Azeem et al., "Classical Molecular Dynamics Study for Defect Sink Behavior in Oxide Dispersed Strengthened Alloys," Proceedings of 2018 15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018, pp. 12 - 15, Institute of Electrical and Electronics Engineers, Mar 2018.
The definitive version is available at https://doi.org/10.1109/IBCAST.2018.8312177
Department(s)
Civil, Architectural and Environmental Engineering
Second Department
Mechanical and Aerospace Engineering
Keywords and Phrases
clusters; Nano oxide; Oxide dispersed strengthened alloy; stability molecular dynamics simulation
International Standard Book Number (ISBN)
978-153863564-3
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
09 Mar 2018
Included in
Aerospace Engineering Commons, Architectural Engineering Commons, Civil and Environmental Engineering Commons, Mechanical Engineering Commons
Comments
National Natural Science Foundation of China, Grant 11505037