Effect of self-ion irradiation on hardening and microstructure of tungsten
Effect of self-ion irradiation on hardening and microstructure of tungsten
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DOI：
10.1016/j.nme.2016.06.005
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发表时间：
2016-12-01
影响因子：
2.6
通讯作者：
Tanigawa, H.
中科院分区：
文献类型：
--
作者：
Hwang, T.;Fukuda, M.;Tanigawa, H.
研究了纯W和W - 3%Re合金在5.0dpa以下的自离子辐照硬化和显微组织。使用18 MeV W 6+在500和800 ℃下进行离子辐照。使用聚焦离子束然后进行电抛光来制作薄箔样本以供透射电子显微镜观察。在所有辐照样品中观察到位错环。除W-3%Re辐照到0.2dpa外，在所有试样中均观察到空洞。用纳米压痕法测量了硬度。纯W的辐照硬化在1.0dpa时达到饱和。在W - 3%Re的情况下，辐照硬化在1.0dpa处显示出峰值。研究了显微组织与硬化之间的相关性。(C)2016作者由爱思唯尔有限公司发布
The irradiation hardening and microstructures of pure W and W - 3%Re for up to 5.0 dpa by self-ion irradiation were investigated in this work. The ion irradiation was conducted using 18 MeV W6+ at 500 and 800 degrees C. A focused ion beam followed by electro-polishing was used to make thin foil specimens for transmission electron microscope observations. Dislocation loops were observed in all the irradiated samples. Voids were observed in all of the specimens except the W-3%Re irradiated to 0.2 dpa. The hardness was measured by using nanoindentation. The irradiation hardening was saturated at 1.0 dpa for pure W. In the case of W - 3%Re, the irradiation hardening showed a peak at 1.0 dpa. The correlation between the microstructure and hardening was investigated. (C) 2016 The Authors. Published by Elsevier Ltd.