New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study

X.-Y. Liu; B. P. Uberuaga; D. Perez; A. F. Voter

doi:10.1080/21663831.2018.1494637

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New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study

Original Report | 更新时间：2026-08-19

- New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study
- New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study
- 材料研究快报（英文） 2018年6卷第9期页码：522-530
- 作者机构：
  
  1. Materials Science and Technology Division Los Alamos National Laboratory Los Alamos
  2. Theoretical Division Los Alamos National Laboratory Los Alamos
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1494637
  中图分类号：
- 网络首发：2018-07-07，
  
  纸质出版：2018
- 稿件说明：
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X.-Y. Liu, B. P. Uberuaga, D. Perez, 等. New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study[J]. 材料研究快报（英文）, 2018,6(9):522-530.

X.-Y. Liu, B. P. Uberuaga, D. Perez, et al. New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study[J]. Materials Research Letters, 2018, 6(9): 522-530.
X.-Y. Liu, B. P. Uberuaga, D. Perez, 等. New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study[J]. 材料研究快报（英文）, 2018,6(9):522-530. DOI： 10.1080/21663831.2018.1494637.

X.-Y. Liu, B. P. Uberuaga, D. Perez, et al. New helium bubble growth mode at a symmetric grain-boundary in tungsten: accelerated molecular dynamics study[J]. Materials Research Letters, 2018, 6(9): 522-530. DOI： 10.1080/21663831.2018.1494637.

摘要

Abstract

BSTRACTThis work

with an emphasis on helium irradiation rates appropriate for fusion-plasma conditions

advances the understanding of helium evolution at grain boundaries in W

an important consideration in the understanding of W as a plasma-facing component. Using accelerated molecular dynamics

helium bubble nucleation and growth at a symmetric Σ5[100](310) tilt grain-boundary in W is studied. The simulations reveal that the growth mode associated with bubble growth at the grain-boundary leads to a suppression of the helium supply to the bubble and hence to arrested growth. Such an unconventional bubble growth mode may dominate in materials with a high density of sinks.

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相关机构

National Key Laboratory of Science and Technology for High-strength Structural Materials Central South University

Department of Mechanical Engineering City University of Hong Kong

Department of Physics University of Helsinki HelsinkiFinland

CCFE Culham Science Centre

School of Materials Science and Engineering University of Science and Technology Beijing

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