A special coarsening mechanism for intergranular helium bubbles upon heating: A combined experimental and numerical study
Gao, J; Huang, HF; Liu, X; Wang, CB; Stubbins, JF; Li, Y
2018
发表期刊SCRIPTA MATERIALIA
ISSN1359-6462
卷号147页码:93-97
文章类型期刊论文
摘要Here, by using in situ transmission electron microcopy, we discovered a special mechanism governing the coarsening of intergranular helium bubbles, which exhibit pancake-like growth along grain boundaries to achieve coalescence with another bubble upon heating at 673 K. The developed analytical model, addressing the stress field induced by the bubble internal pressure, well reproduced the observed shape evolution during the bubble growth. Moreover, we show that the coalescing rate of intergranular bubbles was controlled by the surface diffusion and can be accelerated by the pressure gradient between bubbles. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词Cavity Growth Structural-materials Surface-diffusion Brownian-motion Fusion Energy Metals Coalescence Irradiation
DOI10.1016/j.scriptamat.2018.01.006
收录类别SCI
语种英语
WOS记录号WOS:000426232300020
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28914
专题中科院上海应用物理研究所2011-2018年
作者单位1.Gao, J
2.Huang, HF
3.Liu, X
4.Wang, CB
5.Stubbins, JF
6.Li, Y
推荐引用方式
GB/T 7714
Gao, J,Huang, HF,Liu, X,et al. A special coarsening mechanism for intergranular helium bubbles upon heating: A combined experimental and numerical study[J]. SCRIPTA MATERIALIA,2018,147:93-97.
APA Gao, J,Huang, HF,Liu, X,Wang, CB,Stubbins, JF,&Li, Y.(2018).A special coarsening mechanism for intergranular helium bubbles upon heating: A combined experimental and numerical study.SCRIPTA MATERIALIA,147,93-97.
MLA Gao, J,et al."A special coarsening mechanism for intergranular helium bubbles upon heating: A combined experimental and numerical study".SCRIPTA MATERIALIA 147(2018):93-97.
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