The effect of hydrogen on dislocation motion and cracking in tungsten foil
The effect of hydrogen on dislocation motion and cracking in tungsten foil
复制标题
氢对钨箔位错运动和裂纹的影响
DOI:
10.1016/j.corsci.2022.110547
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发表时间:
2022-08
影响因子:
8.3
通讯作者:
Shuai Wang
中科院分区:
文献类型:
--
作者:
Hailin Cao;Shuai Wang
By investigating the change of microstructure features in the presence and absence of hydrogen, we studied the influence of internal hydrogen on the plastic deformation ahead of a crack tip in tungsten foil. After micromechanical loading, ahead of the crack tip in the hydrogen-charged tungsten, we found an intermittent plastic zone composed of dislocation tangles and a dislocation network with an L-square shape. The L-square dislocation structure tended to move along the crack propagation direction. These observations are attributed to the hydrogen effect on the energy release rate and the stress intensity factor. The propagation of crack is considered a result of the competition between H-modified dislocation motion and H-induced decohesion. • Hydrogen-assisted crack propagation generates intermittent plastic zones and L-square dislocation structures in tungsten foil. • The L-square dislocation configuration moves with the crack front in the presence of hydrogen. • Competition between hydrogen-modified dislocation motion and hydrogen-induced decohesion controls the hydrogen-assisted cracking process in tungsten foil.
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影响因子:
3.1
作者:
J. Reiser;M. Rieth;B. Dafferner;A. Hoffmann
通讯作者:
J. Reiser;M. Rieth;B. Dafferner;A. Hoffmann
影响因子:
3.1
作者:
T. Ikeda;T. Otsuka;T. Tanabe
通讯作者:
T. Ikeda;T. Otsuka;T. Tanabe
DOI:
10.1007/bf00186854
发表时间:
1965-09
期刊:
International Journal of Fracture Mechanics
影响因子:
--
作者:
G. Sih;P. C. Paris;G. Irwin
通讯作者:
G. Sih;P. C. Paris;G. Irwin
影响因子:
8.6
作者:
Lu, G;Zhang, Q;Kaxiras, E
通讯作者:
Kaxiras, E
DOI:
10.1007/s11661-015-2836-1
发表时间:
2015-06-01
影响因子:
2.8
作者:
Robertson, Ian M.;Sofronis, P.;Nygren, K. E.
通讯作者:
Nygren, K. E.