Direct observation of solute-dislocation interaction on screw dislocation in a neutron irradiated modified 316 stainless steel

M. Hatakeyama; S. Tamura; I. Yamagata

doi:10.1016/j.matlet.2014.01.109

Direct observation of solute-dislocation interaction on screw dislocation in a neutron irradiated modified 316 stainless steel

M. Hatakeyama^*, S. Tamura, I. Yamagata

^*Corresponding author for this work

Materials Design and Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A three-dimensional atom probe (3DAP) technique was used to observe the three-dimensional solute distribution around screw dislocations in neutron-irradiated modified 316 austenitic stainless steel. Si, Ni, and P were observed to get enriched around the cores of screw dislocations, while Fe, Cr, Mn, and Mo were depleted in the same areas. Si was segregated to a narrow region in the core for which, it was concluded that Si was trapped in the initial stage of segregation. Other enriched elements segregated to some edge features such as kinks and/or jogs formed as a result of Si trapping. The results suggest that solute-dislocation interaction of screw dislocations was similar to radiation-induced segregation, which is affected by the volume size factor of solute atoms.

Original language	English
Pages (from-to)	301-305
Number of pages	5
Journal	Materials Letters
Volume	122
DOIs	https://doi.org/10.1016/j.matlet.2014.01.109
State	Published - 2014/05/01

Keywords

Atom probe
Defects
Nuclear materials
Radiation damage
Segregation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2014.01.109

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@article{1da088fc4124462aba1c8ea2edde7663,

title = "Direct observation of solute-dislocation interaction on screw dislocation in a neutron irradiated modified 316 stainless steel",

abstract = "A three-dimensional atom probe (3DAP) technique was used to observe the three-dimensional solute distribution around screw dislocations in neutron-irradiated modified 316 austenitic stainless steel. Si, Ni, and P were observed to get enriched around the cores of screw dislocations, while Fe, Cr, Mn, and Mo were depleted in the same areas. Si was segregated to a narrow region in the core for which, it was concluded that Si was trapped in the initial stage of segregation. Other enriched elements segregated to some edge features such as kinks and/or jogs formed as a result of Si trapping. The results suggest that solute-dislocation interaction of screw dislocations was similar to radiation-induced segregation, which is affected by the volume size factor of solute atoms.",

keywords = "Atom probe, Defects, Nuclear materials, Radiation damage, Segregation",

author = "M. Hatakeyama and S. Tamura and I. Yamagata",

note = "Funding Information: This work was performed using facilities of the International Research Center for Nuclear Materials Science, Institute for Materials Research (IMR), Tohoku University. A part of this study was financially supported by the JAEA Cooperative Research Scheme on the Nuclear Fuel Cycle and Grant-in-Aid for Young Scientists (no. 23760804 ). The authors acknowledge inspiring discussion with Y. Matsukawa.",

year = "2014",

month = may,

day = "1",

doi = "10.1016/j.matlet.2014.01.109",

language = "英語",

volume = "122",

pages = "301--305",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Direct observation of solute-dislocation interaction on screw dislocation in a neutron irradiated modified 316 stainless steel

AU - Hatakeyama, M.

AU - Tamura, S.

AU - Yamagata, I.

N1 - Funding Information: This work was performed using facilities of the International Research Center for Nuclear Materials Science, Institute for Materials Research (IMR), Tohoku University. A part of this study was financially supported by the JAEA Cooperative Research Scheme on the Nuclear Fuel Cycle and Grant-in-Aid for Young Scientists (no. 23760804 ). The authors acknowledge inspiring discussion with Y. Matsukawa.

PY - 2014/5/1

Y1 - 2014/5/1

N2 - A three-dimensional atom probe (3DAP) technique was used to observe the three-dimensional solute distribution around screw dislocations in neutron-irradiated modified 316 austenitic stainless steel. Si, Ni, and P were observed to get enriched around the cores of screw dislocations, while Fe, Cr, Mn, and Mo were depleted in the same areas. Si was segregated to a narrow region in the core for which, it was concluded that Si was trapped in the initial stage of segregation. Other enriched elements segregated to some edge features such as kinks and/or jogs formed as a result of Si trapping. The results suggest that solute-dislocation interaction of screw dislocations was similar to radiation-induced segregation, which is affected by the volume size factor of solute atoms.

AB - A three-dimensional atom probe (3DAP) technique was used to observe the three-dimensional solute distribution around screw dislocations in neutron-irradiated modified 316 austenitic stainless steel. Si, Ni, and P were observed to get enriched around the cores of screw dislocations, while Fe, Cr, Mn, and Mo were depleted in the same areas. Si was segregated to a narrow region in the core for which, it was concluded that Si was trapped in the initial stage of segregation. Other enriched elements segregated to some edge features such as kinks and/or jogs formed as a result of Si trapping. The results suggest that solute-dislocation interaction of screw dislocations was similar to radiation-induced segregation, which is affected by the volume size factor of solute atoms.

KW - Atom probe

KW - Defects

KW - Nuclear materials

KW - Radiation damage

KW - Segregation

UR - http://www.scopus.com/inward/record.url?scp=84896747125&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2014.01.109

DO - 10.1016/j.matlet.2014.01.109

M3 - 学術論文

AN - SCOPUS:84896747125

SN - 0167-577X

VL - 122

SP - 301

EP - 305

JO - Materials Letters

JF - Materials Letters

ER -

Direct observation of solute-dislocation interaction on screw dislocation in a neutron irradiated modified 316 stainless steel

Abstract

Keywords

ASJC Scopus subject areas

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