Surface and internal microstructure damage of He-ion-irradiated CLAM steel studied by cross-sectional transmission electron microscopy

Liu, P.P.; Qu, Zhan; Fu, Zhenyu; Ya, Wei; Wang, Y.M.; Wang, F.M.; Ohnuki, S.; Wan, F.R.

doi:10.1016/j.jallcom.2015.07.177

Cited by 30 publications

(7 citation statements)

References 33 publications

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“…A white belt with a width of about 250nm formed about 700nm away form the surface, namely a helium bubble layer. Similar helium bubbles had also been observed by Iwakiri et al [11] and Zhan et al [12]. Fig.3(b) and (c) show the selected-area electron diffraction images of regions A and B in Fig.3(a), respectively.…”

Section: Evolution Of Fe 80 Si 743 B 1257 Metallic Glass Microstrucsupporting

confidence: 83%

Damage induced by helium ion irradiation in Fe-based metallic glass

Zhang

Mei

Zhang

et al. 2017

Journal of Nuclear Materials

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The changes in structure and surface morphology of metallic glasses Fe80Si7.43B12.57 and Fe68Zr7B25 before and after the irradiation of He ions with the energy of 300keV were investigated, and were compared with that of the tungsten. The results show that after the He 2+ irradiation, metallic glass Fe68Zr7B25 still maintained amorphous. While a small amount of metastable -Mn type phase nanocrystals formed in metallic glass Fe80Si7.43B12.57 at the fluence of 4×10 17 ions/cm 2 (19dpa). The nanocrystals transformed into α-Fe phase and tetragonal Fe2B phase as the fluence increased to 1×10 18 ions/cm 2 (47dpa). Then the new orthogonal Fe3B phase and -Mn type phase nanocrystals appeared when the fluence increased further, and the quantities of nanocrystals increased. Blisters and cracks appeared on the surface of tungsten under the irradiation fluence of 1×10 18 ions/cm 2 , however only when the fluence was up to 1.6×10 18 ions/cm 2 , could cracks and spalling appear on the surfaces of metallic glasses.

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Section: Evolution Of Fe 80 Si 743 B 1257 Metallic Glass Microstrucsupporting

confidence: 83%

Damage induced by helium ion irradiation in Fe-based metallic glass

Zhang

Mei

Zhang

et al. 2017

Journal of Nuclear Materials

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“…Regarding He behaviors in W or Fe lattices, experimental studies in the literature have been mainly focused on ion irradiation [8], He embrittlement [7,9], and lattice swelling [10], etc. In addition, various theoretical methods have been also conducted to find out He cluster or bubble, He segregation or migration, and He location in W or Fe [11e14].…”

Section: Introductionmentioning

confidence: 99%

Doping of helium at Fe/W interfaces from first principles calculation

Yang

Chen

Fan

et al. 2016

Journal of Alloys and Compounds

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“…In order to eliminate the uncertainty driving from the complex indenter tip, the data within 50 nm were ignored in the following analysis and discussion in the present paper. complex [18] [19] , the influence zone under the indenter is hemispherical with a radius of about five times the indentation depth, which is the blue semicircle region in the schematic diagram as shown in Fig. 5 [20,21] .…”

Section: Resultsmentioning

confidence: 99%

Evaluation of irradiation hardening and microstructure evolution under the synergistic interaction of He and subsequent Fe ions irradiation in CLAM steel

Liu

Zhu

et al. 2016

Journal of Alloys and Compounds

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Sequential dual-ion irradiation is a useful technique for experimental exploration on the synergistic effects of ion accumulation and cascade damage. In this research, the helium-ion accumulation concomitant with displacement damage induced by helium and iron ions irradiation in China low active martensitic (CLAM) steel was studied by ion-irradiation, transmission electron microscopy and nano-indentation technique. The helium bubbles formed under continuous implantation of helium ions at room temperature and the helium dose forming observed bubbles resolved by TEM clearly in CLAM steel is around 0.7×10 17~ 1.0×10 17 He + /cm 2 under single 100 keV He + irradiation. Significant irradiation hardening was observed in the samples with various ion-and dose-irradiations.Positive correlation between the hardening increment and the helium-ion dose has been established in single helium-ion irradiated samples. On the other hand, the subsequent Fe-ion irradiation greatly promoted the formation and growth of helium bubbles as well as dislocation loops in sequential dual-ion irradiated samples. No significant contribution of the subsequent Fe-ion irradiation on the hardness increment was found for the Sequential dual-ion irradiated samples. It is suggested that the defects recombination, the combination effects of size and density of defects contribute to the degree of irradiation hardening. The calculated hardness increment based on dispersion strengthening model and the experimental microstructure analysis followed the same trend as the experimental nano-indentation data.

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Surface and internal microstructure damage of He-ion-irradiated CLAM steel studied by cross-sectional transmission electron microscopy

Cited by 30 publications

References 33 publications

Damage induced by helium ion irradiation in Fe-based metallic glass

Damage induced by helium ion irradiation in Fe-based metallic glass

Doping of helium at Fe/W interfaces from first principles calculation

Evaluation of irradiation hardening and microstructure evolution under the synergistic interaction of He and subsequent Fe ions irradiation in CLAM steel

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