Fluence dependence of helium ion irradiation effects on the microstructure and mechanical properties of tungsten
作者： Mingzhong Zhao , Feng Liu , Zhongshi Yang , Qian Xu , Fang Ding
DOI: 10.1016/J.NIMB.2017.09.002
关键词: Tungsten 、 Nanoindentation 、 Microstructure 、 Ion 、 Transmission electron microscopy 、 Materials science 、 Helium 、 Fluence 、 Irradiation 、 Radiochemistry 、 Molecular physics
摘要: Abstract To understand the effect of helium ion irradiation on microstructure and mechanical properties tungsten (W), recrystallized W is irradiated by 80 keV ions with fluence 3 × 1015, 3 × 1016 3 × 1017 ions/cm2. Transmission electron microscope (TEM) observation suggests that large numbers dislocation loops are generated in size loop increases fluence. The results micro-hardness nanoindentation show hardening can be clearly detected after bombardment displacements per atom (dpa)
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