|Effect of dislocations on helium retention in deformed pure iron|
|Gong YH(龚毅豪); Cao XZ(曹兴忠); Jin SX(靳硕学); Lu EY(卢二阳); Zhu T(朱特); Kuang P(况鹏); Gong, YH; Cao, XZ; Jin, SX; Lu, EY; Hu, YC; Zhu, T; Kuang, P; Xu, Q; Wang, BY
|发表期刊||JOURNAL OF NUCLEAR MATERIALS
|摘要||The effects of dislocations created by deformation on helium retention in pure iron, including the helium atoms diffusion along the dislocation line and desorption from dislocation trapping sites, were investigated. The dislocation defect was introduced in specimens by cold-rolling, and then 5 keV helium ions were implanted into the deformed specimens. Slow positron beam technology and thermal desorption spectroscopy were used to investigate the evolution of dislocation defects and the desorption behavior of helium atoms under influence of dislocation. The behaviors of S-E, W-E and S-W plots indicate clearly that lots of helium atoms remain in the deformed specimen and helium atoms combining with dislocation change the distribution of electron density. The helium desorption plot indicates that dislocation accelerates helium desorption at 293 K-600 K and facilitates helium dissociation from HenVm (n/m = 1.8) cluster. (C) 2016 Elsevier B.V. All rights reserved.|
|关键词[WOS]||SLOW POSITRON BEAM
; VACANCY CLUSTERS
; PIPE DIFFUSION
|WOS类目||Materials Science, Multidisciplinary
; Nuclear Science & Technology
Gong YH,Cao XZ,Jin SX,et al. Effect of dislocations on helium retention in deformed pure iron[J]. JOURNAL OF NUCLEAR MATERIALS,2016,482:93-98.
龚毅豪.,曹兴忠.,靳硕学.,卢二阳.,朱特.,...&Wang, BY.(2016).Effect of dislocations on helium retention in deformed pure iron.JOURNAL OF NUCLEAR MATERIALS,482,93-98.
龚毅豪,et al."Effect of dislocations on helium retention in deformed pure iron".JOURNAL OF NUCLEAR MATERIALS 482(2016):93-98.