A special coarsening mechanism for intergranular helium bubbles upon heating: A combined experimental and numerical study

A special coarsening mechanism for intergranular helium bubbles upon heating: A combined experimental and numerical study
复制标题

加热时晶间氦气泡的特殊粗化机制:实验与数值相结合的研究

DOI:
10.1016/j.scriptamat.2018.01.006
复制
发表时间:
2018-04
期刊:
影响因子:
6
通讯作者:
Yan Li
Yan Li
中科院分区:
材料科学1区
文献类型:
--
作者:
Jie Gao;Hefei Huang;Xiang Liu;Chengbin Wang;James F. Stubbins;Yan Li

文献摘要

参考文献

被引文献

相似文献

本文利用透射电镜原位观察,发现了一种特殊的沿晶氦泡粗化机制,即在673 K下加热时,沿晶界沿着呈饼状生长,并与另一个氦泡合并。所开发的分析模型,解决由气泡内部压力引起的应力场,以及再现气泡生长过程中观察到的形状演变。此外,我们发现,晶间气泡的合并速率控制的表面扩散,可以加速气泡之间的压力梯度。
Here, by usingin situtransmission 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.
DOI: 10.1016/j.actamat.2015.08.028
发表时间: 2015-11-01
期刊: ACTA MATERIALIA
影响因子: 9.4
作者:
Reichardt, Ashley;Ionescu, Mihail;Bhattacharyya, Dhriti
通讯作者: Bhattacharyya, Dhriti
DOI: 10.1088/0031-9112/26/11/045
发表时间: 1975-11
期刊: Physics Bulletin
影响因子: --
作者:
D. Shaw
通讯作者: D. Shaw
DOI: 10.1016/j.jnucmat.2003.09.001
发表时间: 2003-12-01
影响因子: 3.1
作者:
Trinkaus, H;Singh, BN
通讯作者: Singh, BN
氦辐照亚微米铜中的纳米气泡破碎和无气泡通道剪切定位
DOI: 10.1103/physrevlett.117.215501
发表时间: 2016
影响因子: 8.6
作者:
Ding Ming-Shuai;Tian Lin;Han Wei-Zhong;Li Ju;Ma Evan;Shan Zhi-Wei
通讯作者: Shan Zhi-Wei
DOI: 10.1007/978-3-319-48206-4
发表时间: 2016
期刊: Diffusion in Solids
影响因子: --
作者:
P. Shewmon
通讯作者: P. Shewmon