skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Formation of superlattice structure in irradiated materials: a phase field study

Abstract

The formation and self-organization of fission gas bubbles under irradiation is a unique phenomenon, which affects the swelling behavior and mechanical stability of nuclear materials. We develop a phase field model to investigate the formation mechanism of fission gas bubbles, and associated material properties under different irradiation condition. The thermodynamic and kinetic origin of superlattice formation is systematically analyzed. In particular, the symmetry of the superlattice is dictated by the anisotropic diffusion of interstitial atoms, while the lattice parameter is determined by the instability of vacancy and gas concentration waves. The spatial distribution of gas bubbles strongly depends on the nucleation, growth and coarsening process, which leads to the formation of self-organized superlattice. This study provides a new insight into designing target experiments to tailor desired microstructure under irradiation.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Idaho National Laboratory
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1484491
Report Number(s):
INL/CON-18-51619-Rev000
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: Materials Science & Technology 18, Columbus, Ohio, 10/14/2018 - 10/18/2018
Country of Publication:
United States
Language:
English
Subject:
36 - MATERIALS SCIENCE; void/gas bubble superlattice; irradiation

Citation Formats

Gao, Yipeng, Zhang, Yongfeng, Schwen, Daniel, Jiang, Chao, and Gan, Jian. Formation of superlattice structure in irradiated materials: a phase field study. United States: N. p., 2018. Web.
Gao, Yipeng, Zhang, Yongfeng, Schwen, Daniel, Jiang, Chao, & Gan, Jian. Formation of superlattice structure in irradiated materials: a phase field study. United States.
Gao, Yipeng, Zhang, Yongfeng, Schwen, Daniel, Jiang, Chao, and Gan, Jian. Thu . "Formation of superlattice structure in irradiated materials: a phase field study". United States. https://www.osti.gov/servlets/purl/1484491.
@article{osti_1484491,
title = {Formation of superlattice structure in irradiated materials: a phase field study},
author = {Gao, Yipeng and Zhang, Yongfeng and Schwen, Daniel and Jiang, Chao and Gan, Jian},
abstractNote = {The formation and self-organization of fission gas bubbles under irradiation is a unique phenomenon, which affects the swelling behavior and mechanical stability of nuclear materials. We develop a phase field model to investigate the formation mechanism of fission gas bubbles, and associated material properties under different irradiation condition. The thermodynamic and kinetic origin of superlattice formation is systematically analyzed. In particular, the symmetry of the superlattice is dictated by the anisotropic diffusion of interstitial atoms, while the lattice parameter is determined by the instability of vacancy and gas concentration waves. The spatial distribution of gas bubbles strongly depends on the nucleation, growth and coarsening process, which leads to the formation of self-organized superlattice. This study provides a new insight into designing target experiments to tailor desired microstructure under irradiation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: