Irradiation-induced void evolution in iron：A phase-field approach with atomistic derived parameters

A series of material parameters are derived from atomistic simulations and implemented into a phase field（PF） model to simulate void evolution in body-centered cubic（bcc） iron subjected to different irradiation doses at different temperatures.The simulation results show good agreement with experimen...

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Bibliographic Details
Published inChinese physics B Vol. 26; no. 2; pp. 363 - 369
Main Author 王园园 丁建华 柳文波 黄绍松 柯小琴 王云志 张弛 赵纪军
Format Journal Article
LanguageEnglish
Published 01.02.2017
Subjects
体心立方
原子模拟
原子论
演化
相场方法
空洞
辐照剂量
铁
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/26/2/026102

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Summary:A series of material parameters are derived from atomistic simulations and implemented into a phase field（PF） model to simulate void evolution in body-centered cubic（bcc） iron subjected to different irradiation doses at different temperatures.The simulation results show good agreement with experimental observations — the porosity as a function of temperature varies in a bell-shaped manner and the void density monotonically decreases with increasing temperatures; both porosity and void density increase with increasing irradiation dose at the same temperature. Analysis reveals that the evolution of void number and size is determined by the interplay among the production, diffusion and recombination of vacancy and interstitial.
Bibliography:Yuan-Yuan Wang1, Jian-Hua Ding1, Wen-Bo Liu2, Shao-Song Huang1, Xiao-Qin Ke3, Yun-Zhi Wang3,4, Chi Zhang5, and Ji-Jun Zhao1 （1. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams （Ministry of Education）, Dalian University of Technology, Dalian 116024, China; 2.Department of Nuclear Science and Technology, Xi＇ an Jiaotong University, Xi＇ an 710049, China; 3. Center of Microstructure Science, Multi-Disciplinary Materials Research Center, Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of Materials, Xi＇ an Jiaotong University, Xi＇ an 710049, China; 4.Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210, USA; 5. Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China）
phase field method atomistic simulation void evolution irradiation
A series of material parameters are derived from atomistic simulations and implemented into a phase field（PF） model to simulate void evolution in body-centered cubic（bcc） iron subjected to different irradiation doses at different temperatures.The simulation results show good agreement with experimental observations — the porosity as a function of temperature varies in a bell-shaped manner and the void density monotonically decreases with increasing temperatures; both porosity and void density increase with increasing irradiation dose at the same temperature. Analysis reveals that the evolution of void number and size is determined by the interplay among the production, diffusion and recombination of vacancy and interstitial.
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/26/2/026102