Back to Search Start Over

Loop-punching suppression induced by growth of helium bubble pair in tungsten.

Authors :
Gao, N.
Cui, M. H.
Setyawan, W.
Kurtz, R. J.
Source :
Journal of Applied Physics; 2018, Vol. 124 Issue 23, pN.PAG-N.PAG, 6p, 5 Diagrams, 2 Graphs
Publication Year :
2018

Abstract

Molecular dynamics and transmission electron microscopy are employed to study the formation and evolution of interstitial dislocation loops due to nearby growing helium bubbles. The study reveals a novel mechanism that suppresses further formation of loops. Mass transport of self-interstitial atoms between the bubbles is observed, followed by the loop formation, resulting in a loop-bubble complex in which the Burgers vector may rotate between <100> and 1/2 <111>. Such a complex can absorb free loops, effectively influencing the evolution of loop number density. These results provide a new understanding of loop-bubble complex formation and saturation of the loop density under continuous helium implantation in materials. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00218979
Volume :
124
Issue :
23
Database :
Complementary Index
Journal :
Journal of Applied Physics
Publication Type :
Academic Journal
Accession number :
133705288
Full Text :
https://doi.org/10.1063/1.5053138