The effect of grain size on bubble formation and evolution in helium-irradiated Cu-Fe-Ag

Wurmshuber, Michael; Frazer, D.; Balooch, M.; Issa, Inas; Bachmaier, Andrea; Hosemann, Peter; Kiener, Daniel

doi:10.1016/j.matchar.2020.110822

Cited by 13 publications

(7 citation statements)

References 55 publications

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“…The data indicates that the helium implantation in the material lowered the measured modulus and hardness values as expected from reviewing current literature [42,43]. It is believed that as more of the volume of the sample is taken up by the helium bubbles the structure transforms into a helium bubble/Cu-Nb composite mixture resulting in the overall modulus and hardness decreases.…”

Section: Helium Implantationsupporting

confidence: 59%

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Mechanical Property Evaluation of CuNb Composites Manufactured with High-Pressure Torsion

Frazer

Connick

Howard

et al. 2022

JOM

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Section: Helium Implantationsupporting

confidence: 59%

“…The large amounts of interfaces and grain boundaries in the material can act as defect sinks for the material and inhibit the formation of large helium bubbles or voids in the material [43,36]. In [42], similar experiments were performed on Cu specimens with large grains compared to the implantation depth.…”

Section: Helium Implantationmentioning

confidence: 99%

Mechanical Property Evaluation of CuNb Composites Manufactured with High-Pressure Torsion

Frazer

Connick

Howard

et al. 2022

JOM

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“…Material degradation resulting from irradiation − is a challenge that plagues a variety of industries, including the nuclear energy sector , and the aerospace industry . The property changes originate from displacement cascades caused by energetic particles such as neutrons, protons, and ions that lead to nanometer-sized defect clusters in the form of vacancy and interstitial loops, stacking-fault tetrahedra (SFT), or voids.…”

mentioning

confidence: 99%

Direct Observation of Grain-Boundary-Migration-Assisted Radiation Damage Healing in Ultrafine Grained Gold under Mechanical Stress

et al. 2023

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Nanostructured metals are a promising class of radiation-tolerant materials. A large volume fraction of grain boundaries (GBs) can provide plenty of sinks for radiation damage, and understanding the underlying healing mechanisms is key to developing more effective radiation tolerant materials. Here, we observe radiation damage absorption by stress-assisted GB migration in ultrafine-grained Au thin films using a quantitative in situ transmission electron microscopy nanomechanical testing technique. We show that the GB migration rate is significantly higher in the unirradiated specimens. This behavior is attributed to the presence of smaller grains in the unirradiated specimens that are nearly absent in the irradiated specimens. Our experimental results also suggest that the GB mobility is decreased as a result of irradiation. This work implies that the deleterious effects of irradiation can be reduced by an evolving network of migrating GBs under stress.

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“…[54] Additionally, alloying is usually utilized for the construction of nanocrystalline metals with reinforced strength and high radiation tolerance due to the addition of highvolume fraction grain boundaries. [55][56][57] Tungsten has been expected to be the foremost candidate for the plasma facing materials (PFMs) in fusion reactor due to its high melting point, good thermal conductivity, and low sputtering yield. [58][59][60] The extreme radiation conditions of plasma that may reach 10-104 MeV and neutron radiation of 14.1 MeV in the fusion reactor are rigorous challenges for Wbased PFMs.…”

Section: Nanocrystalline Metals and Alloysmentioning

confidence: 99%

“…The nanostructure regulation of nanocrystalline metals effectively induces much grain boundaries [54] . Additionally, alloying is usually utilized for the construction of nanocrystalline metals with reinforced strength and high radiation tolerance due to the addition of high‐volume fraction grain boundaries [55–57] …”

Section: Grain Boundaries In Nanocrystalline Materialsmentioning

confidence: 99%

Recent Progress on Interfaces in Nanomaterials for Nuclear Radiation Resistance

Jiang

et al. 2022

ChemNanoMat

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Interfaces including grain boundaries and heterophase interfaces could withstand the radiation damage via providing sites for trapping the defects. With the urgent demand for high radiation-tolerance nanostructured materials, exploration of the structural properties, especially the role of the interfaces on the radiation response in the nanomaterials, is of significant essentialness in developing the design of new radiation-resistant materials. Herein, the recent progress and development of two main kinds of interfaces, namely the grain boundaries in nanocrystalline and the hetero-phase interfaces in nanolayered materials and nano-composites, in nanostructured materials that are designed for radiation tolerance are summarized. In addition, the radiation response and resistant mechanism under irradiation conditions of the nanocrystalline materials like metals, single-phase alloys, and ceramics, as well as the nanocomposites like nanolayered metals, nanolayered ceramics, metal-carbon nanocomposite, and nanoparticle dispersed steels, are reviewed. Finally, challenges and perspectives are proposed to offer advice for the development of radiation resistance nanomaterials.

show abstract

The effect of grain size on bubble formation and evolution in helium-irradiated Cu-Fe-Ag

Cited by 13 publications

References 55 publications

Mechanical Property Evaluation of CuNb Composites Manufactured with High-Pressure Torsion

Mechanical Property Evaluation of CuNb Composites Manufactured with High-Pressure Torsion

Direct Observation of Grain-Boundary-Migration-Assisted Radiation Damage Healing in Ultrafine Grained Gold under Mechanical Stress

Recent Progress on Interfaces in Nanomaterials for Nuclear Radiation Resistance

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