Grain Boundary-Mediated Reduction of Radiation Defects in Different W-Based Alloys

Li, Xiaotong; Tang, Xiao-Zhi; Guo, Ya-Fang

doi:10.1007/s12540-023-01390-1

Cited by 3 publications

(1 citation statement)

References 52 publications

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“…The excess Fe interstitials at GBs have strong interaction with nearby vacancies and may induce annihilation through via the 'interstitial emission' mechanisms [98]. Li et al [99] explored the effect of various solutes on the reduction of radiation-induced defects in W alloys. Their results indicate that the segregation of Re and V at GBs enhances their sink efficiency of interstitials.…”

Section: Role Of Chemical Complexity In Gb-defects Interaction Under ...mentioning

confidence: 99%

Metastable grain boundaries: the roles of structural and chemical disorders in their energetics, non-equilibrium kinetic evolution, and mechanical behaviors

He,

Wang,

Fan

2024

J. Phys.: Condens. Matter

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Complex environments in advanced manufacturing usually involve ultrafast laser or ion irradiation which leads to rapid heating and cooling and drives grain boundaries (GBs) to non-equilibrium states, featuring distinct energetics and kinetic behaviors compared to conventional equilibrium or near-equilibrium GBs. In this topical review, we provide an overview of both recent experimental and computational studies on metastable GBs, i.e. their energetics, kinetic behaviors, and mechanical properties. In contrast to GBs at thermodynamic equilibrium, the inherent structure energy of metastable GBs exhibits a spectrum instead of single value for a particular misorientation, due to the existence of microstructural and chemical disorder. The potential energy landscape governs the energetic and kinetic behaviors of metastable GBs, including the ageing/rejuvenating mechanism and activation barrier distributions. The unique energetics and structural disorder of metastable GBs lead to unique mechanical properties and tunability of interface-rich nanocrystalline materials. We also discuss that, in addition to structural disorder, chemical complexity in multi-components alloys could also drive the GBs away from their ground states and, subsequently, significantly impact on the GBs-mediated deformation. And under some extreme conditions such as irradiation, structural disorders and chemical complexity may simultaneously present at interfaces, further enriching of metastability of GBs and their physical and mechanical behaviors. Finally, we discuss the machine learning techniques, which have been increasingly employed to predict and understand the complex behaviors of metastable GBs in recent years. We highlight the potential of data-driven approaches to revolutionize the study of disorder systems by efficiently extracting the relationship between structural features and material properties. We hope this topical review paper could shed light and stimulate the development of new GBs engineering strategies that allow more flexibility and tunability for the design of nano-structured materials.

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Section: Role Of Chemical Complexity In Gb-defects Interaction Under ...mentioning

confidence: 99%

Metastable grain boundaries: the roles of structural and chemical disorders in their energetics, non-equilibrium kinetic evolution, and mechanical behaviors

He,

Wang,

Fan

2024

J. Phys.: Condens. Matter

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Orientation Dependent Quasi-isentropic Tensile Behaviors of Body-Centered Cubic Tungsten Through Molecular Dynamics

Leng,

Li,

Liu

et al. 2024

Met. Mater. Int.

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Primary irradiation damage in Ni–graphene nanocomposites with pre-existing hydrogen: insights from atomistic simulations

Liu,

Yuan,

Huang

2024

Eur. Phys. J. Plus

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Grain Boundary-Mediated Reduction of Radiation Defects in Different W-Based Alloys

Cited by 3 publications

References 52 publications

Metastable grain boundaries: the roles of structural and chemical disorders in their energetics, non-equilibrium kinetic evolution, and mechanical behaviors

Metastable grain boundaries: the roles of structural and chemical disorders in their energetics, non-equilibrium kinetic evolution, and mechanical behaviors

Orientation Dependent Quasi-isentropic Tensile Behaviors of Body-Centered Cubic Tungsten Through Molecular Dynamics

Primary irradiation damage in Ni–graphene nanocomposites with pre-existing hydrogen: insights from atomistic simulations

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