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Microstructure and damage behavior of W–Cr alloy under He irradiation

In this study, a large-power inductively coupled plasma source was designed to perform the continuous helium ion irradiations of W–Cr binary alloy (W–20 wt%Cr) under relevant conditions of the International Thermonuclear Experimental Reactor. Surface damages and microstructures of irradiated W–20Cr...

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Published in:	Journal of nuclear materials 2018-04, Vol.501, p.181-188
Main Authors:	Huang, Ke, Luo, Lai–Ma, Zan, Xiang, Xu, Qiu, Liu, Dong–Guang, Zhu, Xiao–Yong, Cheng, Ji–Gui, Wu, Yu–Cheng
Format:	Article
Language:	English
Subjects:	Alloys Binary alloys Chromium base alloys Damage assessment Energy dispersive X ray spectroscopy Energy transmission He irradiation behavior Helium Helium ions Inductively coupled plasma Interface Irradiation Microhardness Microstructure Radiation damage Scanning electron microscopy Spectrum analysis Transmission electron microscopy Tungsten W-Cr alloy X-ray spectroscopy
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container_title	Journal of nuclear materials
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creator	Huang, Ke Luo, Lai–Ma Zan, Xiang Xu, Qiu Liu, Dong–Guang Zhu, Xiao–Yong Cheng, Ji–Gui Wu, Yu–Cheng
description	In this study, a large-power inductively coupled plasma source was designed to perform the continuous helium ion irradiations of W–Cr binary alloy (W–20 wt%Cr) under relevant conditions of the International Thermonuclear Experimental Reactor. Surface damages and microstructures of irradiated W–20Cr were observed by using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy. The addition of Cr dramatically enhanced the micro-hardness of the obtained bulk materials, and the interface between the W matrix and the second phase Cr–O is a semi-coherent interface. After irradiation, the doping of Cr element effectively reduces the damage of the W matrix during the irradiation process. The semi-coherent interface between the second phase and the W matrix improves the anti-irradiation performance of the W–20Cr alloy.
doi_str_mv	10.1016/j.jnucmat.2018.01.019
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source	ScienceDirect Freedom Collection 2022-2024
subjects	Alloys Binary alloys Chromium base alloys Damage assessment Energy dispersive X ray spectroscopy Energy transmission He irradiation behavior Helium Helium ions Inductively coupled plasma Interface Irradiation Microhardness Microstructure Radiation damage Scanning electron microscopy Spectrum analysis Transmission electron microscopy Tungsten W-Cr alloy X-ray spectroscopy
title	Microstructure and damage behavior of W–Cr alloy under He irradiation
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