Elucidating He-H assisted cavity evolution in alpha Cr under multiple ion beam irradiation

Jiang, Li; Peng, Qing; Xiu, Pengyuan; Yan, Yan; Jiao, Zhijie; Lu, Chenyang; Liu, Tong; Ye, Chao; Shu, Rui; Liao, Yehong; Ren, Qisen; Gao, Fei

doi:10.1016/j.scriptamat.2020.06.031

Cited by 26 publications

(20 citation statements)

References 29 publications

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“…The increase of swelling caused by He-H synergistic effects in materials under different experimental conditions had been demonstrated in previous studies (Farrell and Lee, 1985;Farrell and Lee, 1987;Sekimura et al, 2000;Tanaka et al, 2004;Borodin et al, 2013;Brimbal et al, 2015;Kupriiyanova et al, 2016;Liu et al, 2021). However, some results (Farrell et al, 1978;Hamada et al, 1997;Kupriiyanova et al, 2016;Jiang et al, 2020) showed that He-H synergistic effects on swelling are not monotonic, indicating that the swelling may not always be enhanced but also be suppressed under triple beam irradiation. For example, Jiang et al (2020) recently reported that the cavity swelling of alpha-Cr was 0.8% under single beam irradiation, while a lower swelling of 0.5% was observed under triple beam irradiation.…”

Section: He-h Synergistic Effects On Cavity Evolution and Swellingmentioning

confidence: 71%

“…And the different role of H in these two situations implied that H might exhibit a significant effect mainly in the synergistic effects of He, H, and vacancies. However, Jiang et al (2020) reported a distinct effect of H on prompting cavity growth under (HI + H) dual beam irradiation. The presence of H in dual beam increased the size of cavities and reduced the density significantly, resulting in the maximum swelling.…”

Section: The Role Of He and H In Synergistic Effectsmentioning

confidence: 99%

“…However, some results (Farrell et al, 1978;Hamada et al, 1997;Kupriiyanova et al, 2016;Jiang et al, 2020) showed that He-H synergistic effects on swelling are not monotonic, indicating that the swelling may not always be enhanced but also be suppressed under triple beam irradiation. For example, Jiang et al (2020) recently reported that the cavity swelling of alpha-Cr was 0.8% under single beam irradiation, while a lower swelling of 0.5% was observed under triple beam irradiation.…”

Section: He-h Synergistic Effects On Cavity Evolution and Swellingmentioning

confidence: 99%

“…Cavity swelling is usually evaluated by the volume ratio of cavities and the matrix (Jiang et al, 2020). The size and number density of cavities strongly influences swelling.…”

Section: He-h Synergistic Effects On Cavity Evolution and Swellingmentioning

confidence: 99%

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Helium-Hydrogen Synergistic Effects in Structural Materials Under Fusion Neutron Irradiation

et al. 2022

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In fusion reactors, 14 MeV high-energy neutron irradiation of structural materials will produce large amounts of helium and hydrogen simultaneously with displacement defects. These He and H atoms will interact with displacement defects, leading to He-H synergistic effects and aggravating the irradiation damage. Currently, there exist no available high-flux fusion neutron sources. Additionally, the neutron energy spectrum and the generation of He and H in fission reactors or spallation neutron sources greatly differ from those in fusion reactors. Multi-ion beam irradiation is a promising method to emulate the synergistic effects induced by fusion neutron irradiation. This review summarizes the experimental studies on the He-H synergistic effects, and analyzes the effects of He and H on cavity evolution and swelling under multi-ion beam irradiation. The roles of various experimental factors are also discussed. More systematically controlled experiments are suggested to develop a comprehensive understanding of He-H synergistic effects in structural materials.

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Section: He-h Synergistic Effects On Cavity Evolution and Swellingmentioning

confidence: 71%

Section: The Role Of He and H In Synergistic Effectsmentioning

confidence: 99%

Section: He-h Synergistic Effects On Cavity Evolution and Swellingmentioning

confidence: 99%

“…Cavity swelling is usually evaluated by the volume ratio of cavities and the matrix (Jiang et al, 2020). The size and number density of cavities strongly influences swelling.…”

Section: He-h Synergistic Effects On Cavity Evolution and Swellingmentioning

confidence: 99%

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Helium-Hydrogen Synergistic Effects in Structural Materials Under Fusion Neutron Irradiation

et al. 2022

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“…The high radiation doses coupled with the high temperature during reactor operation leads to degradation of structural material properties, resulting in hardening, embrittlement, creep, and swelling [25][26][27] . Further, the radiation-induced defects and associated strain can alter performance of structural materials, such as offsetting the fatigue loading, thereby accelerating material deformation by reducing the fatigue deformation cycle, limiting the service life of a nuclear reactor 23,[28][29][30][31] . Hence, fundamental understanding of radiation-induced defects and associated strain is critical to addressing the long-term performance of structural materials and life extension issues of nuclear reactors.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional strain imaging of irradiated chromium using multi-reflection Bragg coherent diffraction

Jossou¹,

Assefa²,

Suzana

et al. 2022

Preprint

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Radiation-induced materials degradation is a key concern in limiting the performance of nuclear materials. The formation of nanoscale void and gas bubble superlattices in metals and alloys under radiation environments can effectively mitigate radiation-induced damage, such as swelling and aid the development of next generation radiation tolerant materials. To effectively manage radiation-induced damage via superlattice formation, it is critical to understand the microstructural changes and strain induced by such superlattices. In our approach, we utilize multi-reflection Bragg coherent diffraction imaging (BCDI) to quantify the full strain tensor induced by void superlattices in iron (Fe) irradiated chromium substrate, a model metallic system. Multi-reflection BCDI is a powerful method for detailed investigation of the strain and microstructural changes caused by radiation-induced defects during Fe ion implantation, a key fundamental understanding that is inaccessible via current conventional techniques. Our approach provides a quantitative estimation of radiation-induced three dimensional (3D) strain generated at the microscopic level and predicts the number density of defects with a high degree of sensitivity in bulk metallic substrates. Such quantitative evaluation of 3D strain in nuclear materials can have a major impact on predicting materials performance and degradation in radiation environments and can revolutionize design of radiation tolerant materials.

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Observations of radiation-enhanced ductility in irradiated Inconel 718: Tensile properties, deformation behavior, and microstructure

et al. 2022

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Elucidating He-H assisted cavity evolution in alpha Cr under multiple ion beam irradiation

Cited by 26 publications

References 29 publications

Helium-Hydrogen Synergistic Effects in Structural Materials Under Fusion Neutron Irradiation

Helium-Hydrogen Synergistic Effects in Structural Materials Under Fusion Neutron Irradiation

Three-dimensional strain imaging of irradiated chromium using multi-reflection Bragg coherent diffraction

Observations of radiation-enhanced ductility in irradiated Inconel 718: Tensile properties, deformation behavior, and microstructure

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