Results 21 to 30 of about 2,381 (212)

Elastic Deformation of Polycrystals [PDF]

open access: yesPhysical Review Letters, 2003
4 pages, 4 ps ...
Ahluwalia, Rajeev   +2 more
openaire   +3 more sources

Influence of Crystal Plasticity Parameters on the Strain Hardening Behavior of Polycrystals

open access: yesCrystals, 2021
The effective mechanical properties of a polycrystal depend directly on the single-crystal properties of each grain and its crystallographic orientation with respect to the load axis.
Mahdieh Shahmardani   +2 more
doaj   +1 more source

Statistical properties of effective elastic moduli of random cubic polycrystals

open access: yesMechanics & Industry, 2023
The homogenized elastic properties of polycrystals depend on the grain morphology and crystallographic orientations. For simplification purposes, the orientations of the grains are usually considered three independent Euler angles.
Sheng Ningyue   +3 more
doaj   +1 more source

The Internal Friction of Single Crystals, Bicrystals and Polycrystals of Pure Magnesium

open access: yesArchives of Metallurgy and Materials, 2015
The internal friction of magnesium single crystals, bicrystals and polycrystals has been studied between room temperature and 450°C. There is no internal friction peak in the single crystals, but a prominent relaxation peak appears at around 160°C in ...
Jiang W.B.   +3 more
doaj   +1 more source

Phase-field study of crystallographic texturing in piezoelectric polycrystals

open access: yesJournal of Advanced Dielectrics, 2022
Crystallographic texturing enables the design of piezoelectric polycrystals that outperform traditional random polycrystals by exhibiting outstanding piezoelectric properties.
Meixin Wang, Tian Xia, Liwei D. Geng
doaj   +1 more source

Field-theoretic approach for characterization the deformation of multicomponent polycrystalline materials

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
Most of inorganic structural materials (metallic alloys, ceramics, minerals etc.) are polycrystalline aggregates, consisted of macroscopically large quantity of single-crystal grains (crystallites).
Anatoliy A Tashkinov   +1 more
doaj   +1 more source

The Dislocation Mechanics of Crystal/Polycrystal Plasticity

open access: yesCrystals, 2022
A brief history and update are given in four examples demonstrating that polycrystals are generally stronger than their individual component crystal grains because of obstructed dislocation pile-ups at grain boundaries.
Ronald W. Armstrong
doaj   +1 more source

Topological and metrical aspects of normal and abnormal grain growth

open access: yesMaterials Research, 2007
Grain growth theories normally describe a grain using the concept of ‘grain radius’. However, this assumption bypasses all topological information relating to the grain, viz., the number of its faces, edges, etc. This study, by contrast, introduces a new
Paulo Rangel Rios, Martin Eden Glicksman
doaj   +1 more source

A Compact Ultrafast Electron Diffractometer with Relativistic Femtosecond Electron Pulses

open access: yesQuantum Beam Science, 2020
We have developed a compact relativistic femtosecond electron diffractometer with a radio-frequency photocathode electron gun and an electron lens system.
Jinfeng Yang   +4 more
doaj   +1 more source

Toward Material Property Extraction from Dynamic Spherical Indentation Experiments on Hardening Polycrystalline Metals

open access: yesMetals, 2023
Static indentation and dynamic indentation are reviewed, with a focus on extraction of material properties of isotropic strain-hardening polycrystalline metals that may be rate- and temperature-sensitive. Static indentation is reviewed first, followed by
John D. Clayton   +3 more
doaj   +1 more source

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