Results 11 to 20 of about 419,752 (350)
Incommensurate grain-boundary atomic structure [PDF]
Nature Communications, 2023 Grain-boundary atomic structures of crystalline materials have long been believed to be commensurate with the crystal periodicity of the adjacent crystals.
Takehito Seki +5 more
doaj +2 more sources
Grain boundary engineering for efficient and durable electrocatalysis [PDF]
Nature CommunicationsGrain boundaries in noble metal catalysts have been identified as critical sites for enhancing catalytic activity in electrochemical reactions such as the oxygen reduction reaction.
Xin Geng +9 more
doaj +2 more sources
Dislocation-Grain Boundary Interaction Dataset for FCC Cu [PDF]
Scientific DataInteractions between dislocations and grain boundaries play a major role in controlling the strength and ductility of structural materials. Experimentally, assessing and probing geometric and stress-based criteria at the local level for dislocation ...
Khanh Dang +6 more
doaj +2 more sources
Journal of Materials Research and Technology, 2022 In order to probe the superior nano/micron scale mechanical behaviors of ultra-fine grain (UFG) austenitic stainless steel as compared with coarse grain (CG) counterpart, systematic nanoindentation tests were carried out together with post-mortem EBSD ...
Rui Ke +4 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Grain Boundary Shear Coupling is Not a Grain Boundary Property [PDF]
SSRN Electronic Journal, 2018 Shear coupling implies that all grain boundary (GB) migration necessarily creates mechanical stresses/strains and is a key component to the evolution of all polycrystalline microstructures. We present MD simulation data and theoretical analyses that demonstrate the GB shear coupling is not an intrinsic GB property, but rather strongly depends on the ...
Spencer L. Thomas +4 more
openaire +4 more sources
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
doaj +1 more source
Grain boundary dislocations in plane matching grain boundaries [PDF]
Physica Status Solidi (a), 1979 Plane matching (PM) boundaries are defined as boundaries in which a single stack of planes of indices (hkl) in each crystal adjoining the boundary is either parallel, or nearly parallel, and where no other significant lattice matching exists. A search is made (by transmission electron microscopy) for possible intrinsic secondary grain boundary ...
Schindler, R. +2 more
openaire +4 more sources
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
doaj +1 more source