نتایج جستجو برای: grain size dependent crystal plasticity

تعداد نتایج: 1442859  

Journal: :Bulletin of Materials Science 2001

Journal: :IOP Conference Series: Materials Science and Engineering 2022

Abstract In this work, it is investigated how grain boundaries influence the local strain determination by microstructural feature tracking (MFT) algorithm. method, tetrahedra are used as calculation unit. We apply MFT processing procedure on data obtained a crystal plasticity finite element modeling (CPFEM) simulation to explore uncertainties in calculated strains caused boundaries. Effects of...

Journal: :European Journal of Mechanics A-solids 2022

The effect of slip transfer on the flow strength various FCC polycrystals was analyzed by means computational homogenization a representative volume element microstructure. crystal behavior governed physically-based plasticity model in framework finite strains where at grain boundaries allowed between systems suitably oriented according to geometrical criteria. Conversely, blocked if conditions...

Journal: :Han-gukbangjaehakoenonmunjip 2023

Interest in liquefaction has increased owing to the increasing occurrence of country. According previous studies, factors that influence include grain size distribution, plasticity, relative density, overconsolidation ratio, and confining conditions. In this study, possibility was evaluated based on distribution soil plasticity. Based a clear correlation between resistance two samples could not...

Journal: : 2021

The article considers a brief review of the foreign publications on study structure, phase composition and properties five-component high-entropy alloys (HEAs) in different structural states wide temperature range over past two decades. HEAs attract attention scientists with their unique unusual properties. difficulties comparative analysis generalization data are noted due to methods obtaining...

Journal: :Physical review letters 2014
Yujiao Li Dierk Raabe Michael Herbig Pyuck-Pa Choi Shoji Goto Aleksander Kostka Hiroshi Yarita Christine Borchers Reiner Kirchheim

Grain refinement through severe plastic deformation enables synthesis of ultrahigh-strength nanostructured materials. Two challenges exist in that context: First, deformation-driven grain refinement is limited by dynamic dislocation recovery and crystal coarsening due to capillary driving forces; second, grain boundary sliding and hence softening occur when the grain size approaches several nan...

Journal: :International Journal of Plasticity 2022

A reduced micromorphic model is formulated in the scope of crystal plasticity and crystalline cleavage damage. The finite strain formulation utilizes a single additional microvariable that used to regularize localized inelastic deformation mechanisms. Damage as strain-like variable fit generalized microslip and/or microdamage based formulation. Strategies treating slip damage simultaneously sep...

Journal: :Acta Metallurgica Sinica (english Letters) 2022

High-entropy alloys (HEAs) have significant application prospects as promising candidate materials for nuclear industry due to their excellent mechanical properties, corrosion resistance and irradiation resistance. In this work, the Mo0.25V0.25Ti1.5Zr0.5Nbx (x = 0, 0.25, 0.5, 0.75 1.0) HEAs were designed fabricated. The prepared by vacuum arc melting, all ingots annealed at 1200 °C 24 h. micros...

2014
Andrew K. Borrell John E. Mullet Barbara George-Jaeggli Erik J. van Oosterom Graeme L. Hammer Patricia E. Klein David R. Jordan

Stay-green sorghum plants exhibit greener leaves and stems during the grain-filling period under water-limited conditions compared with their senescent counterparts, resulting in increased grain yield, grain mass, and lodging resistance. Stay-green has been mapped to a number of key chromosomal regions, including Stg1, Stg2, Stg3, and Stg4, but the functions of these individual quantitative tra...

2011
J. S. Chawla F. Gstrein K. P. O’Brien J. S. Clarke D. Gall

The electron scattering at surfaces, interfaces, and grain boundaries is investigated using polycrystalline and single-crystal Cu thin films and nanowires. The experimental data is described by a Fuchs–Sondheimer (FS) and Mayadas–Shatzkes (MS) model that is extended to account for the large variation in the specific resistivity of different grain boundaries as well as distinct top and bottom su...

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