Dynamic interactions of helium-vacancy clusters with edge dislocations in alpha-Fe

Yang L; Zu XT; Gao F; Peng SM; Heinisch HL; Long XG; Kurtz RJ

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Dynamic interactions of helium-vacancy clusters with edge dislocations in alpha-Fe

机译：氦-空位团簇与α-Fe中边缘位错的动态相互作用

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The effects of He-vacancy (He-V) clusters on the mobility of an a/2 < 111 > {110} edge dislocation in alpha-Fe are investigated by atomic simulation with empirical potentials at 0 K. A number of small HenVm (n/m 0-4) clusters initially placed at the same position on the slip plane are comparatively studied. The results show that the interaction of He-V clusters with edge dislocations depends on not only the helium-to-vacancy (He/V) ratio, but also the cluster size. The small He-V clusters with low He/V ratios have a small effect on the dislocation mobility, but the larger clusters with higher He/V ratios significantly increase the critical resolved shear stress for dislocation glide. One of interesting results is that the He-V clusters almost stay at their original positions, and do not move along with the dislocation.

机译：通过原子模拟以0 K的经验电势研究了He空位（He-V）团簇对α-Fe中a / 2 <111> {110}边缘位错的迁移率的影响。许多小HenVm（比较研究了n / m 0-4）最初放置在滑移面上相同位置的簇。结果表明，He-V团簇与边缘位错的相互作用不仅取决于氦空位（He / V）比，还取决于团簇的大小。 He / V比低的小型He-V团簇对位错迁移率的影响很小，但是He / V比高的较大的团簇显着增加了位错滑移的临界分辨剪切应力。有趣的结果之一是，He-V团簇几乎停留在其原始位置，并且不会随位错移动。

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《Physica, B. Condensed Matter》 |2010年第7期|共5页
作者
Yang L; Zu XT; Gao F; Peng SM; Heinisch HL; Long XG; Kurtz RJ;
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正文语种 eng
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Molecular dynamic; Edge dislocation; He-vacancy cluster; a-Fe;

机译：分子动力学;位错;He空位簇;a-Fe;

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专利

1. Dynamic interactions of helium-vacancy clusters with edge dislocations in alpha-Fe [J] . Yang L, Zu XT, Gao F, Physica, B. Condensed Matter . 2010,第7期

机译：氦-空位团簇与α-Fe中边缘位错的动态相互作用
2. Interaction of helium-vacancy clusters with edge dislocations in α-Fe [J] . L. Yang, X.T. Zu, Z.G. Wang, Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms . 2007,第2期

机译：氦空位团簇与α-Fe边缘位错的相互作用
3. A study on the mobility of 1/2 < 111 >{(011)over-bar} edge dislocation in low-carbon alpha-Fe and its interactions with damage cascade: On picosecond time scale using molecular dynamics simulations [J] . Zamzamian Seyed Mehrdad, Feghhi Seyed Amir Hossein, Samadfam Mohammad Journal of Nuclear Materials: Materials Aspects of Fission and Fusion . 2019,第期

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4. MOLECULAR STATICS STUDY OF THE EFFECT OF HYDROGEN ON EDGE DISLOCATION MOTION IN ALPHA-Fe [C] . SHINYA TAKETOMI, RYOSUKE MATSUMOTO, NORIYUKI MIYAZAKI International Hydrogen Conference . 2014

机译：氢气对Alpha-Fe中边缘位错运动效果的分子估计研究
5. Evolution, interaction, and intrinsic properties of dislocations in intermetallics: Anisotropic three-dimensional dislocation dynamics approach. [D] . Chen, Qian. 2008

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7. A dislocation dynamics study of the strength of stacking faultudtetrahedra. Part II: interactions with mixed and edge dislocations [O] . Martínez Sáez Enrique, Marian Jaime, Perlado Martín José Manuel 2008

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Dynamic interactions of helium-vacancy clusters with edge dislocations in alpha-Fe

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