Irradiation effect on mechanical properties of tungsten from molecular dynamic simulation

被引：20

作者：

Chen, L. ^{[1
,2
]}

Li, L. Q. ^{[1
]}

Gong, H. R. ^{[1
]}

Fan, J. L. ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[2] Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China

来源：

MATERIALS LETTERS | 2019年 / 241卷

基金：

中国国家自然科学基金;

关键词：

Simulation and modelling; Radiation damage; Mechanical properties; Tungsten; RADIATION-DAMAGE; TRANSITION; ENERGY;

D O I：

10.1016/j.matlet.2019.01.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Molecular dynamic simulation has been conducted to investigate the irradiation effects on mechanical properties of monocrystalline and nanocrystalline W samples. It is found that irradiation has quite different effects on mechanical properties of monocrystalline and nanocrystalline W, i.e., the ideal tensile strength of monocrystalline and nanocrystalline W decreases and increases with the increase of irradiation energy, respectively. In addition, nanocrystalline W with smaller nanoparticles possesses higher tensile strength under irradiation, which is fundamentally due to more grain boundaries absorbed with more interstitial atoms. The derived results could provide a deep understanding of irradiation effects on monocrystalline and nanocrystalline W. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：27 / 30

页数：4

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