Helium entrapment in a nanostructured ferritic alloy

P. D. Edmondson; C. M. Parish; Y. Zhang; A. Hallén; M. K. Miller

doi:10.1016/j.scriptamat.2011.07.024

Helium entrapment in a nanostructured ferritic alloy

P. D. Edmondson
, C. M. Parish
, Y. Zhang
, A. Hallén
, M. K. Miller

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

98 Scopus citations

Abstract

A nanostructured ferritic alloy was irradiated with He⁺ to simulate service in a nuclear reactor and to test the hypothesis that the surface of nanoclusters is a preferential nucleation site for He bubbles. Transmission electron microscopy and atom probe tomography showed direct evidence of He bubble nucleation on the surfaces of nanoclusters and Ti(N,C) precipitates, and along grain boundaries and dislocations, thereby demonstrating an alloy design approach to improve the radiation tolerance of structural steels in the extreme environments found in nuclear reactors.

Original language	English
Pages (from-to)	731-734
Number of pages	4
Journal	Scripta Materialia
Volume	65
Issue number	8
DOIs	https://doi.org/10.1016/j.scriptamat.2011.07.024
State	Published - Oct 2011
Externally published	Yes

Keywords

Atom probe tomography
Helium irradiation
Nanostructured ferritic alloys
Radiation tolerance
Transmission electron microscopy

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10.1016/j.scriptamat.2011.07.024

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title = "Helium entrapment in a nanostructured ferritic alloy",

abstract = "A nanostructured ferritic alloy was irradiated with He+ to simulate service in a nuclear reactor and to test the hypothesis that the surface of nanoclusters is a preferential nucleation site for He bubbles. Transmission electron microscopy and atom probe tomography showed direct evidence of He bubble nucleation on the surfaces of nanoclusters and Ti(N,C) precipitates, and along grain boundaries and dislocations, thereby demonstrating an alloy design approach to improve the radiation tolerance of structural steels in the extreme environments found in nuclear reactors.",

keywords = "Atom probe tomography, Helium irradiation, Nanostructured ferritic alloys, Radiation tolerance, Transmission electron microscopy",

author = "Edmondson, \{P. D.\} and Parish, \{C. M.\} and Y. Zhang and A. Hall{\'e}n and Miller, \{M. K.\}",

note = "Funding Information: This research was sponsored by the Materials Sciences and Engineering Division, Office of Basic Energy Sciences, US Department of Energy. The microscopy was supported by ORNL{\textquoteright}s Shared Research Equipment (SHaRE) User Facility, which is sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. ",

year = "2011",

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doi = "10.1016/j.scriptamat.2011.07.024",

language = "English",

volume = "65",

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TY - JOUR

T1 - Helium entrapment in a nanostructured ferritic alloy

AU - Edmondson, P. D.

AU - Parish, C. M.

AU - Zhang, Y.

AU - Hallén, A.

AU - Miller, M. K.

N1 - Funding Information: This research was sponsored by the Materials Sciences and Engineering Division, Office of Basic Energy Sciences, US Department of Energy. The microscopy was supported by ORNL’s Shared Research Equipment (SHaRE) User Facility, which is sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy.

PY - 2011/10

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N2 - A nanostructured ferritic alloy was irradiated with He+ to simulate service in a nuclear reactor and to test the hypothesis that the surface of nanoclusters is a preferential nucleation site for He bubbles. Transmission electron microscopy and atom probe tomography showed direct evidence of He bubble nucleation on the surfaces of nanoclusters and Ti(N,C) precipitates, and along grain boundaries and dislocations, thereby demonstrating an alloy design approach to improve the radiation tolerance of structural steels in the extreme environments found in nuclear reactors.

AB - A nanostructured ferritic alloy was irradiated with He+ to simulate service in a nuclear reactor and to test the hypothesis that the surface of nanoclusters is a preferential nucleation site for He bubbles. Transmission electron microscopy and atom probe tomography showed direct evidence of He bubble nucleation on the surfaces of nanoclusters and Ti(N,C) precipitates, and along grain boundaries and dislocations, thereby demonstrating an alloy design approach to improve the radiation tolerance of structural steels in the extreme environments found in nuclear reactors.

KW - Atom probe tomography

KW - Helium irradiation

KW - Nanostructured ferritic alloys

KW - Radiation tolerance

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/80052261174

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DO - 10.1016/j.scriptamat.2011.07.024

M3 - Article

AN - SCOPUS:80052261174

SN - 1359-6462

VL - 65

SP - 731

EP - 734

JO - Scripta Materialia

JF - Scripta Materialia

IS - 8

ER -

Helium entrapment in a nanostructured ferritic alloy

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Keywords

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