Gas effects on void formation in 14 MeV nickel ion irradiated pure nickel

Wang, L.M.; Dodd, R.A.; Kulcinski, G.L.

doi:10.1016/0022-3115(86)90078-4

Cited by 20 publications

(5 citation statements)

References 7 publications

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“…The overall swelling quoted in Table 1 is a comparison among different alloys and serves as a reference for detailed investigation of depth dependent swelling. Also note that the swelling calculated for nickel in this study has the highest amount of documented swelling for heavy ion irradiation using a rastered beam, whereas the studies conducted previously for pure nickel mainly used a defocused beam [25][26]. It should be pointed out that the swelling in nickel has the tendency to saturate with increasing dose, as has been observed in several neutron irradiation studies [1,[27][28][29].…”

Section: Resultssupporting

confidence: 62%

The effect of injected interstitials on void formation in self-ion irradiated nickel containing concentrated solid solution alloys

Yang

Jin

et al. 2017

Journal of Nuclear Materials

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Pure nickel and three nickel containing single-phase concentrated solid solution alloys (SP-CSAs) have been irradiated using 3 MeV Ni 2+ ions at to fluences of and. The radiation-induced voids were characterized using cross sectional transmission electron microscopy that distributions of voids and dislocation loops were presented as a function of depth. A various degree of void suppression was observed on the tested samples and a defect clusters migration mechanism was proposed for NiCo. In order to sufficiently understand the defect dynamics in these SP-CSAs, the injected interstitial effect has been taken into account along with the 1-dimentional (1-D) and 3-dimentional (3-D) interstitial movement mechanisms.

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Section: Resultssupporting

confidence: 62%

The effect of injected interstitials on void formation in self-ion irradiated nickel containing concentrated solid solution alloys

Yang

Jin

et al. 2017

Journal of Nuclear Materials

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“…A study of the Ni-Cu system displays a remarkable resistance to void formation under irradiation [18,19]. In pure nickel samples, voids formed throughout the entire damage range under Ni irradiation, but only appeared at the near-surface region and at the peak damage depth under Cu i rradiation.…”

Section: Traditional Alloys: Compositional Effects On Radiation Perfomentioning

confidence: 99%

Atomic-level heterogeneity and defect dynamics in concentrated solid-solution alloys

Zhang

Zhao

Weber

et al. 2017

Current Opinion in Solid State and Materials Science

182

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Performance enhancement of structural materials in extreme radiation environments has been actively investigated for many decades. Traditional alloys, such as steel, brass and aluminum alloys, normally contain one or two principal element(s) with a low concentration of other elementals. While these exist in either a mixture of metallic phases (multiple phases) or solid solution (single phase), limited or localized chemical disorder is a common characteristic of the main matrix. In sharp contrast to the traditional alloys, recently developed single-phase concentrated solid so lution alloys (CSAs) contain multiple elemental species in equiatomic or high concentrations with different elements randomly arranged on a crystalline lattice. Due to the lack of elemental predictability in these CSAs, they exhibit significant chemical disorders and unique site-to-site lattice distortions. While it has long been recognized that specific compositions of traditional alloys have enhanced radiation resistance, it remains unclear how the atomic-level heterogeneity affects defect formation, damage accumulation, and microstructural evolution. Such knowledge gaps have been a roadblock to future-generation energy technology. CSAs with a simple crystal structure, but complex chemical disorder are ideal systems to understand how compositional complexity influences defect dynamics, and to fill the knowledge gaps with focus on electronic-and atomic-level interactions, mass and energy transfer processes, and radiation resistance performance. Recent advances of defect dynamics and irradiation performance of CSAs are reviewed, intrinsic chemical effects on radiation performance are discussed, and future directions are suggested.

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“…Most research and applications have been focused on alloys with one principal element, to which the addition of alloying elements in low concentrations leads to various performance improvements and changes in radiation resistance ( Supplementary Note 1 ). A quarter of a century-old observation has shown that fewer voids form in pure nickel under ion irradiation with Cu ions than with Ni ions, indicating possible chemical effects of substituting Cu into nickel lattice 1 2 . In the Ni–Al binary alloy system 3 , irradiation-induced microstructural and density changes were found to depend heavily on both Al content and irradiation temperature, suggesting significant modification of defect processes.…”

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confidence: 99%

Influence of chemical disorder on energy dissipation and defect evolution in concentrated solid solution alloys

et al. 2015

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A grand challenge in materials research is to understand complex electronic correlation and non-equilibrium atomic interactions, and how such intrinsic properties and dynamic processes affect energy transfer and defect evolution in irradiated materials. Here we report that chemical disorder, with an increasing number of principal elements and/or altered concentrations of specific elements, in single-phase concentrated solid solution alloys can lead to substantial reduction in electron mean free path and orders of magnitude decrease in electrical and thermal conductivity. The subsequently slow energy dissipation affects defect dynamics at the early stages, and consequentially may result in less deleterious defects. Suppressed damage accumulation with increasing chemical disorder from pure nickel to binary and to more complex quaternary solid solutions is observed. Understanding and controlling energy dissipation and defect dynamics by altering alloy complexity may pave the way for new design principles of radiation-tolerant structural alloys for energy applications.

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Gas effects on void formation in 14 MeV nickel ion irradiated pure nickel

Cited by 20 publications

References 7 publications

The effect of injected interstitials on void formation in self-ion irradiated nickel containing concentrated solid solution alloys

The effect of injected interstitials on void formation in self-ion irradiated nickel containing concentrated solid solution alloys

Atomic-level heterogeneity and defect dynamics in concentrated solid-solution alloys

Influence of chemical disorder on energy dissipation and defect evolution in concentrated solid solution alloys

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