Incommensurate grain-boundary atomic structure. [PDF]
Nat Commun, 2023 Grain-boundary atomic structures of crystalline materials have long been believed to be commensurate with the crystal periodicity of the adjacent crystals.
Seki T +5 more
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Grain boundary engineering for efficient and durable electrocatalysis. [PDF]
Nat CommunGrain boundaries in noble metal catalysts have been identified as critical sites for enhancing catalytic activity in electrochemical reactions such as the oxygen reduction reaction.
Geng X +9 more
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Research progress in grain boundary serration in iron/nickel based austenitic polycrystalline alloys
工程科学学报, 2021 Grain boundaries of high-temperature metallic materials, such as alloys, are often considered weak. At elevated temperatures, the strength of the grain boundary is relatively lower than that of the intragranular areas, and cracks often initially form on ...
Xia ZHAO +6 more
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Electron Radiation Effects of Grain-Boundary Evolution on Polycrystalline Silicon in MEMS
Micromachines, 2022 A specimen observed with a transmission electron microscope (TEM) was processed by focused ion beam (FIB) from a surface-micromachined polycrystalline silicon MEMS structure. Electron irradiation and in situ observation were performed on a selected grain
Lei Wang, Haiyun Liu, Xing Liu
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Grain boundary effects on piezoelectric properties of the core–shell-structured BaTiO3@TiO2 ceramics [PDF]
Journal of Advanced Dielectrics, 2018 Grain boundary effect on BaTiO3 has been widely investigated for several decades. However, all of them tailored the grain boundary by grain size of BaTiO3.
Xixi Li +9 more
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Effect of Mo and Cr on S-Induced Intergranular Fracture in γ-Fe
Metals, 2022 S is a common corrosion medium for austenitic stainless steels. The severe intergranular fracture of austenitic stainless steels occurs in sulfur environments.
Si Liu +8 more
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Universality of grain boundary phases in fcc metals: Case study on high-angle [111] symmetric tilt grain boundaries [PDF]
Phys. Rev. B 107, 054103 (2023), 2022 Grain boundaries often exhibit ordered atomic structures. Increasing amounts of evidence have been provided by transmission electron microscopy and atomistic computer simulations that different stable and metastable grain boundary structures can occur.
arxiv +1 more source
Thermodynamic theory of dislocation/grain boundary interaction [PDF]
, 2021 The thermodynamic theory of dislocation/grain boundary interaction, including dislocation pile-up against, absorption by, and transfer through the grain boundary, is developed for nonuniform plastic deformations in polycrystals. The case study is carried out on the boundary conditions affecting work hardening of a bicrystal subjected to plane ...
arxiv +1 more source
Statistical Crystal Plasticity Model Advanced for Grain Boundary Sliding Description
Crystals, 2020 Grain boundary sliding is an important deformation mechanism, and therefore its description is essential for modeling different technological processes of thermomechanical treatment, in particular the superplasticity forming of metallic materials.
Alexey Shveykin +2 more
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Nuclear Materials and Energy, 2023 First-principles calculations have been performed to investigate the effect of segregation of transmutation helium and lithium atoms on the strength of beryllium {101̄1} grain boundary.
Yinlong Wang +5 more
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