Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys

The atomic-scale defects such as (deuterium, helium)-vacancy clusters in nuclear energy materials are one of the causes for the deterioration of the macroscopic properties of materials. Unfortunately, they cannot be observed by transmission electron microscopy (TEM) before they grow to the nanometer...

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Autores principales:	Haibiao Wu, Zhen Wang, Te Zhu, Qiu Xu, Baoyi Wang, Detao Xiao, Xingzhong Cao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	helium/deuterium nanoclusters positron annihilation spectroscopy irradiation damage Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/3ea68402418440c393e9ca5c593485e3
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spelling	oai:doaj.org-article:3ea68402418440c393e9ca5c593485e32021-11-11T18:11:02ZEffects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys10.3390/ma142166691996-1944https://doaj.org/article/3ea68402418440c393e9ca5c593485e32021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6669https://doaj.org/toc/1996-1944The atomic-scale defects such as (deuterium, helium)-vacancy clusters in nuclear energy materials are one of the causes for the deterioration of the macroscopic properties of materials. Unfortunately, they cannot be observed by transmission electron microscopy (TEM) before they grow to the nanometer scale. Positron annihilation spectroscopy (PAS) has been proven to be sensitive to open-volume defects, and could characterize the evolution of the size and concentration of the vacancy-like nanoclusters. We have investigated the effects of He-D interaction on the formation of nanoscale cavities in Fe9Cr alloys by PAS and TEM. The results show that small-sized bubbles are formed in the specimen irradiated with 5 × 10<sup>16</sup> He<sup>+</sup>/cm<sup>2</sup>, and the subsequent implanted D-ions contribute to the growth of these helium bubbles. The most likely reason is that helium bubbles previously formed in the sample captured deuterium injected later, causing bubbles to grow. In the lower dose He-irradiated samples, a large number of small dislocations and vacancies are generated and form helium-vacancy clusters with the helium atoms.Haibiao WuZhen WangTe ZhuQiu XuBaoyi WangDetao XiaoXingzhong CaoMDPI AGarticlehelium/deuteriumnanoclusterspositron annihilation spectroscopyirradiation damageTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6669, p 6669 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	helium/deuterium nanoclusters positron annihilation spectroscopy irradiation damage Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	helium/deuterium nanoclusters positron annihilation spectroscopy irradiation damage Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Haibiao Wu Zhen Wang Te Zhu Qiu Xu Baoyi Wang Detao Xiao Xingzhong Cao Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys
description	The atomic-scale defects such as (deuterium, helium)-vacancy clusters in nuclear energy materials are one of the causes for the deterioration of the macroscopic properties of materials. Unfortunately, they cannot be observed by transmission electron microscopy (TEM) before they grow to the nanometer scale. Positron annihilation spectroscopy (PAS) has been proven to be sensitive to open-volume defects, and could characterize the evolution of the size and concentration of the vacancy-like nanoclusters. We have investigated the effects of He-D interaction on the formation of nanoscale cavities in Fe9Cr alloys by PAS and TEM. The results show that small-sized bubbles are formed in the specimen irradiated with 5 × 10<sup>16</sup> He<sup>+</sup>/cm<sup>2</sup>, and the subsequent implanted D-ions contribute to the growth of these helium bubbles. The most likely reason is that helium bubbles previously formed in the sample captured deuterium injected later, causing bubbles to grow. In the lower dose He-irradiated samples, a large number of small dislocations and vacancies are generated and form helium-vacancy clusters with the helium atoms.
format	article
author	Haibiao Wu Zhen Wang Te Zhu Qiu Xu Baoyi Wang Detao Xiao Xingzhong Cao
author_facet	Haibiao Wu Zhen Wang Te Zhu Qiu Xu Baoyi Wang Detao Xiao Xingzhong Cao
author_sort	Haibiao Wu
title	Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys
title_short	Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys
title_full	Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys
title_fullStr	Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys
title_full_unstemmed	Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys
title_sort	effects of he-d interaction on irradiation-induced swelling in fe9cr alloys
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3ea68402418440c393e9ca5c593485e3
work_keys_str_mv	AT haibiaowu effectsofhedinteractiononirradiationinducedswellinginfe9cralloys AT zhenwang effectsofhedinteractiononirradiationinducedswellinginfe9cralloys AT tezhu effectsofhedinteractiononirradiationinducedswellinginfe9cralloys AT qiuxu effectsofhedinteractiononirradiationinducedswellinginfe9cralloys AT baoyiwang effectsofhedinteractiononirradiationinducedswellinginfe9cralloys AT detaoxiao effectsofhedinteractiononirradiationinducedswellinginfe9cralloys AT xingzhongcao effectsofhedinteractiononirradiationinducedswellinginfe9cralloys
_version_	1718431878785007616

Effects of He-D Interaction on Irradiation-Induced Swelling in Fe9Cr Alloys

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