Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel

Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel

The microstructural changes of a tempered F82H ferritic–martensitic steel following He implantation at 60 and 500 °C have been examined by transmission electron microscopy (TEM) and atom probe tomography (APT). After irradiation at 500 °C, numerous He bubbles were formed throughout the matrix, where...

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Main Authors: B. Mazumder, M.E. Bannister, F.W. Meyer, M.K. Miller, C.M. Parish, P.D. Edmondson
Format: Article
Language:English
Published: Elsevier 2015-01-01
Series:Nuclear Materials and Energy
Subjects:
F82H
TEM
APT
Ion irradiation
Helium
Online Access:http://www.sciencedirect.com/science/article/pii/S235217911420007X
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spelling doaj-7fad081b96b6494abe0e9cc78be479972020-11-24T21:06:44ZengElsevierNuclear Materials and Energy2352-17912015-01-011C81210.1016/j.nme.2014.11.001Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steelB. Mazumder0M.E. Bannister1F.W. Meyer2M.K. Miller3C.M. Parish4P.D. Edmondson5Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAMulticharged Ion Research Facility, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAMulticharged Ion Research Facility, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USACenter for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAMaterials Science & Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAMaterials Science & Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAThe microstructural changes of a tempered F82H ferritic–martensitic steel following He implantation at 60 and 500 °C have been examined by transmission electron microscopy (TEM) and atom probe tomography (APT). After irradiation at 500 °C, numerous He bubbles were formed throughout the matrix, whereas after irradiation at 60 °C, no bubbles were seen to form in the matrix. In both irradiations, He bubbles were observed to have formed within large carbide precipitates, determined by APT compositional analysis to be M23C6. The observed preferential He bubble formation in carbides during low temperature He irradiation occurs as a result of the diffusing He being trapped in the carbide due to the strong He–C bond. As the He concentration increases in the carbide due to trapping, He bubbles are formed.http://www.sciencedirect.com/science/article/pii/S235217911420007XF82HTEMAPTIon irradiationHelium
collection DOAJ
language English
format Article
sources DOAJ
author B. Mazumder
M.E. Bannister
F.W. Meyer
M.K. Miller
C.M. Parish
P.D. Edmondson
spellingShingle B. Mazumder
M.E. Bannister
F.W. Meyer
M.K. Miller
C.M. Parish
P.D. Edmondson
Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel
Nuclear Materials and Energy
F82H
TEM
APT
Ion irradiation
Helium
author_facet B. Mazumder
M.E. Bannister
F.W. Meyer
M.K. Miller
C.M. Parish
P.D. Edmondson
author_sort B. Mazumder
title Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel
title_short Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel
title_full Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel
title_fullStr Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel
title_full_unstemmed Helium trapping in carbide precipitates in a tempered F82H ferritic–martensitic steel
title_sort helium trapping in carbide precipitates in a tempered f82h ferritic–martensitic steel
publisher Elsevier
series Nuclear Materials and Energy
issn 2352-1791
publishDate 2015-01-01
description The microstructural changes of a tempered F82H ferritic–martensitic steel following He implantation at 60 and 500 °C have been examined by transmission electron microscopy (TEM) and atom probe tomography (APT). After irradiation at 500 °C, numerous He bubbles were formed throughout the matrix, whereas after irradiation at 60 °C, no bubbles were seen to form in the matrix. In both irradiations, He bubbles were observed to have formed within large carbide precipitates, determined by APT compositional analysis to be M23C6. The observed preferential He bubble formation in carbides during low temperature He irradiation occurs as a result of the diffusing He being trapped in the carbide due to the strong He–C bond. As the He concentration increases in the carbide due to trapping, He bubbles are formed.
topic F82H
TEM
APT
Ion irradiation
Helium
url http://www.sciencedirect.com/science/article/pii/S235217911420007X
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