Grain boundary extraction

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August undefined, 2024

WebApr 1, 2002 · An extraction technique of trap density at grain boundaries (Dgb) in polycrystalline-silicon thin-film transistors with two-dimensional (2D) device simulation has been developed.

Detecting grain boundaries in deformed rocks using a cellular automata ...

WebMar 16, 2024 · Grain boundary extraction aims to extract the grain boundaries. For example, in Xu et al.'s paper [30], an improved mean shift method is presented for … WebNov 30, 2024 · Special Issue Information. Dear Colleagues, Grain boundary segregation is a phenomenon of increasing importance, mainly in connection with stabilization of nanocrystalline structures. Simultaneously, the interest in grain boundary segregation is accelerated by the development of the methods of theoretical calculations and their … how do you find marginal product

Grain Boundary - an overview ScienceDirect Topics

WebNov 26, 2024 · The mechanical properties of high-entropy alloys are superior to those of traditional alloys. However, the key problem of finding a strengthening mechanism is still challenging. In this work, the molecular dynamics method is used to calculate the tensile properties of face-centered cubic Al0.1CoCrFeNi high-entropy alloys containing … WebMeasurement of the geometry of triple junctions between grain boundaries in polycrystalline materials is used to generate large sets of dihedral angles from which … WebSep 23, 2024 · A suite of 37 molecular dynamics simulations is conducted at two system sizes to systematically characterize the role of grain boundary (GB) misorientation on spall strength in pure BCC tantalum (Ta). The systems studied consist of bicrystals with a single [110] symmetric tilt grain boundary. Two loading conditions are compared: (i) … phoenix news stations fox 10

Effect of Copper Segregation at Low-Angle Grain Boundaries on …

Influence of the twin boundary and Cr segregation on the spalling …

WebFeb 13, 2024 · Nanocrystalline materials (NCMs) exhibit ultra-high strength owing to the high-density grain boundaries (GBs) [1,2,3].However, the wide application of NCMs is hampered by their weak thermal/mechanical stability [4,5,6,7] due to the activation of GB-mediated deformations [], such as nanograin rotation [] and GB migration [].The motion … WebMay 1, 2012 · Highlights Grain boundary detection in deformed rocks used GIS-based cellular automata. Automated extraction used Moore's neighborhood-based rules for edge detection. Different iteration outputs were tested by changing transition rules. Model was tested with deformed quartz arenite and quartz wacke. Quantitative evaluation compared … phoenix news trafficWebDec 31, 2024 · The Frank-Read model, as a way of generating dislocations in metals and alloys, is widely accepted. In the early 1960s, Li proposed an alternate mechanism. Namely, grain boundary sources for dislocations, with the aim of providing a different model for the Hall-Petch relation without the need of dislocation pile-ups at grain boundaries, or … how do you find marginal cost

"WebExperimental observation shows that the grain boundaries obtained by the proposed algorithm are highly complete and accurate. This research has practical value because … " - Grain boundary extraction

Grain boundary extraction

Learning grain boundary segregation energy spectra in polycrystals - Nature

WebApr 13, 2024 · Based on the phenomenon of grain boundary blurring or disconnection in metallographic images, this study develops an algorithm based on regional separation for automatically extracting grain boundaries by an improved mean shift method. ... This research has practical value because the proposed algorithm is suitable for grain … WebSep 11, 2024 · Understanding the coercivity mechanism has had a substantial impact on developing economically more attractive RE-based (RE = rare earth) permanent materials because of price volatility of key RE metals (i.e., Nd and Dy) in recent years. In this work, we investigated the microstructure and magnetic properties of melt-spun …

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WebApr 13, 2024 · Grain boundary extraction is an important part of grain size analysis in material science. In this research, a method used for grain boundary extraction with … Webgrain boundaries obtained by the algorithm proposed in this study are much more complete and accurate compared to those identified by other algorithms. 2. Development of the algorithm used for grain boundary extraction from metallographic images Unlike ordinary digital images, a metallographic image mainly depicts grains and grain boundaries;

WebApr 11, 2024 · Microstructural characteristics, including grain boundary (GB) type, grain size, defects, and various impurities among others, have important impacts on the mechanical properties of solid metals. ... Snapshots for dislocation extraction algorithm of Ni–Cr alloys with different Cr solution concentrations with segregation under the shock … WebAug 1, 2024 · A grain boundary extraction method based on pixel relationship is proposed to solve the problems of grain boundary fracture and pseudo-grain boundary. Under the influence of light and sampling ...

Webprocessing program for grain boundary extraction, that is the former part of the whole program, with someexperimental results. 2. ImageProcessing Systemfor Grain Bound-ary Extraction There are manykinds of techniques for line pat-tern extraction from a gray image. In the field of line drawing processing, the algorithm by which dark WebAug 1, 2024 · DOI: 10.1016/j.measurement.2024.111796 Corpus ID: 251828838; Grain boundary extraction method based on pixel relationship @article{HanWang2024GrainBE, title={Grain boundary extraction method based on pixel relationship}, author={Yu Han Wang and Qing He and Zhi Xie}, journal={Measurement}, year={2024} }

WebApr 14, 2024 · The character of the grain boundaries was another microstructural parameter evaluated to study the deformation behaviour of the nanocomposites. Figure 6 shows the grain boundary maps and the grain boundary misorientation distribution for the samples of cold-rolled Al and Al/CNTs under different strains. In the grain boundary …

WebJul 23, 2024 · Grain boundaries (GBs) are a kind of lattice imperfection widely existing in two-dimensional materials, playing a critical role in materials’ properties and device performance. Related key issues in this … how do you find mailing addresses for freeWebApr 13, 2024 · Grain boundary engineering controlled by chemistry and thermomechanical processing (TMP) routes has been considered a key approach to improve the macroscopic mechanical properties of nanostructured metallic materials [1,2,3,4].Low-angle grain boundaries (LAGBs) with misorientation angles θ of less than 15° are known to form in … phoenix news tweetsWebJun 20, 2016 · The grain boundary healing process was found to improve the photovoltaic performance, and was especially beneficial to the voltage and fill factor, eventually … how do you find maximum forceWebThis research has practical value because the proposed algorithm is suitable for grain boundary extraction from most metallographic images. Metallographic microscopy shows that the vast majority of metal materials are composed of many small grains; the grain size of a metal is important for determining the tensile strength, toughness ... phoenix news tv stationsWebAug 1, 2024 · We apply the minimum-CV criterion to the extraction of grain boundary curvatures from a measurement of polycrystalline Al-5 wt% Cu performed by 3D x-ray diffraction (3DXRD) microscopy. The results show that grain boundaries in this sample are surprisingly flat. Moreover, boundaries of larger area manifest lower curvature, while … phoenix news traffic accidentWebAbstract： Industrial manufacture is an important part of national economy,and steel is one of the most popular materials in industrial manufacture.Many steels have greatly reduced their operational life span because their internal structure has changed under severe service-environments.In order to ensure the normal operation of equipment and ... phoenix newsagencyWebApr 15, 2024 · Grain boundaries determine physical properties of bulk materials including ductility, diffusivity, and electrical conductivity. However, the role of grain boundaries in … phoenix news this morning