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

B. Mazumder; M. E. Bannister; F. W. Meyer; M. K. Miller; C. M. Parish; P. D. Edmondson

doi:10.1016/j.nme.2014.11.001

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

B. Mazumder, M. E. Bannister, F. W. Meyer, M. K. Miller, C. M. Parish, P. D. Edmondson

Oak Ridge National Laboratory

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

19 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	8-12
Number of pages	5
Journal	Nuclear Materials and Energy
Volume	1
DOIs	https://doi.org/10.1016/j.nme.2014.11.001
State	Published - Jan 1 2015

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Publisher Copyright:
© 2015 .

Keywords

APT
F82H
Helium
Ion irradiation
TEM

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10.1016/j.nme.2014.11.001

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title = "Helium trapping in carbide precipitates in a tempered F82H ferritic-martensitic steel",

abstract = "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.",

keywords = "APT, F82H, Helium, Ion irradiation, TEM",

author = "B. Mazumder and Bannister, {M. E.} and Meyer, {F. W.} and Miller, {M. K.} and Parish, {C. M.} and Edmondson, {P. D.}",

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doi = "10.1016/j.nme.2014.11.001",

language = "English",

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TY - JOUR

T1 - Helium trapping in carbide precipitates in a tempered F82H ferritic-martensitic steel

AU - Mazumder, B.

AU - Bannister, M. E.

AU - Meyer, F. W.

AU - Miller, M. K.

AU - Parish, C. M.

AU - Edmondson, P. D.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - 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.

AB - 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.

KW - APT

KW - F82H

KW - Helium

KW - Ion irradiation

KW - TEM

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U2 - 10.1016/j.nme.2014.11.001

DO - 10.1016/j.nme.2014.11.001

M3 - Article

AN - SCOPUS:84928136175

SN - 2352-1791

VL - 1

SP - 8

EP - 12

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

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

Abstract

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Keywords

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