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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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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