Results 21 to 30 of about 24,070 (256)
Barnett Relaxation in Thermally Rotating Grains [PDF]
The Astrophysical Journal, 1997 We present an exact formulation of the physics of Barnett relaxation. Our formulation is based on a realistic kinetic model of the relaxation mechanism which includes the alignment of the grain angular momentum in body coordinates by Barnett dissipation, disalignment by thermal fluctuations, and coupling of the angular momentum to the gas via gas ...
Lazarian, A., Roberge, W. G.
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An energy approach to predict electromigration induced grain rotation under high current density
Theoretical and Applied Mechanics Letters, 2019 An energy approach is proposed to describe the electromigration induced grain rotation under high current density. The driving force is assumed to arise from the grain-boundary energy reduction and increase of the inner energy from the joule heating ...
Yuexing Wang, Yao Yao
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Карантин і захист рослин, 2022 Goal. To determine the species composition of weed plants and their dominant role, to establish the type and level of weediness of corn crops for grain grown in stationary crop rotation and monoculture in the conditions of the Eastern Forest Steppe of ...
R. Hutianskyi +3 more
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Simultaneous grain boundary motion, grain rotation, and sliding in a tricrystal [PDF]
Mechanics of Materials, 2015 Grain rotation and grain boundary (GB) sliding are two important mechanisms for grain coarsening and plastic deformation in nanocrystalline materials. They are in general coupled with GB migration and the resulting dynamics, driven by capillary and external stress, is significantly affected by the presence of junctions.
Basak, Anup, Gupta, Anurag
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Measuring grain rotation at the nanoscale [PDF]
High Pressure Research, 2017 ABSTRACTIn this paper, we introduced a method to measure grain rotation of nanomaterials under external stress using a high pressure diamond anvil cell and the Laue microdiffraction technique at a synchrotron facility. We used tungsten carbide marker crystals to investigate grain rotation activities of 3 and 500 nm nickel media.
Zhou, Xiaoling +5 more
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Materials Research Express, 2022 Friction stir processing is an important method for acquiring ultrafine-grained materials. In this paper, 3 mm ZK60 magnesium alloy sheet was carried for friction stir processing.
Yijie Hu +5 more
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Quantitative study of superplastic deformation mechanism of 5A90 Al-Li alloy
Cailiao gongcheng, 2019 The contribution of grain boundary sliding(GBS) and intragranular dislocation slip(IDS) in the 5A90 Al-Li alloy during superplastic deformation at 480℃ and an initial strain rate of 1×10-3s-1 was quantitatively investigated by analyzing the deformation ...
YE Ling-ying +4 more
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Mathematical modeling of the grain trajectory in the workspace of the sheller with rotating decks
BIO Web of Conferences, 2020 The purpose of the work is to determine the possibility of controlling the operation of cereal grain husks by changing the angular rotation speed of the disk (rotor) and deck to provide optimal conditions for peeling (removal of the flower shell from the
Ibyatov Ravil +4 more
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Scientific Reports, 2022 Crop rotation with species diversification contributes to the control of pests, diseases and weeds and improves soil fertility and conservation, which can lead to increased profitability in grain production systems.
Bruno Volsi +3 more
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Thermophysical Investigation of Asteroid Surfaces. II. Factors Influencing Grain Size
The Planetary Science Journal, 2022 Asteroid surfaces are subjected to mechanical weathering processes that result in the development and evolution of regolith. Two proposed mechanisms—impact bombardment and thermal fatigue—have been proposed as viable and dominant weathering processes ...
Eric M. MacLennan, Joshua P. Emery
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