Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Arttu Lehtinen"'
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
Abstract Plastic deformation of crystalline materials is governed by the features of stress-driven motion of dislocations. In the case of irradiated steels subject to applied stresses, small dislocation loops as well as precipitates are known to inte
Externí odkaz:
https://doaj.org/article/ac0ca6f173614d4a9b7044440cba72ec
Publikováno v:
Physical Review Materials
Alloying metals with other elements is often done to improve the material strength or hardness. A key microscopic mechanism is precipitation hardening, where precipitates impede dislocation motion, but the role of such obstacles in determining the na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe41327fb1a92c1c21200f64f7683c3c
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
Scientific Reports
Scientific Reports
Plastic deformation of crystalline materials is governed by the features of stress-driven motion of dislocations. In the case of irradiated steels subject to applied stresses, small dislocation loops as well as precipitates are known to interfere wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c5c7c49f38ccb843f147d548f451671
https://doi.org/10.1038/s41598-018-25285-z
https://doi.org/10.1038/s41598-018-25285-z
Plastically deforming crystals exhibit scale-free fluctuations that are similar to those observed in driven disordered elastic systems close to depinning, but the nature of the yielding critical point is still debated. Here, we study the marginal sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abc0d21090741659d34788ada8225b8a
Publikováno v:
Physical review. B, Condensed matter and materials physics 94 (2016). doi:10.1103/PhysRevB.94.064101
info:cnr-pdr/source/autori:Lehtinen A.; Costantini G.; Alava M.J.; Zapperi S.; Laurson L./titolo:Glassy features of crystal plasticity/doi:10.1103%2FPhysRevB.94.064101/rivista:Physical review. B, Condensed matter and materials physics/anno:2016/pagina_da:/pagina_a:/intervallo_pagine:/volume:94
info:cnr-pdr/source/autori:Lehtinen A.; Costantini G.; Alava M.J.; Zapperi S.; Laurson L./titolo:Glassy features of crystal plasticity/doi:10.1103%2FPhysRevB.94.064101/rivista:Physical review. B, Condensed matter and materials physics/anno:2016/pagina_da:/pagina_a:/intervallo_pagine:/volume:94
Crystal plasticity occurs by deformation bursts due to the avalanche-like motion of dislocations. Here we perform extensive numerical simulations of a three-dimensional dislocation dynamics model under quasistatic stress-controlled loading. Our resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b99f11ea33918c568e778f9a70db3dcc
http://arxiv.org/abs/1607.07592
http://arxiv.org/abs/1607.07592
Publikováno v:
Physical Review E
The stress-driven motion of dislocations in crystalline solids, and thus the ensuing plastic deformation process, is greatly influenced by the presence or absence of various point-like defects such as precipitates or solute atoms. These defects act a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::614d31dfe3c147e41d5f7490c88201e1
https://doi.org/10.1103/physreve.93.013309
https://doi.org/10.1103/physreve.93.013309
Publikováno v:
Dipòsit Digital de la UB
Universidad de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname
Universidad de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname
The fluidization of complex fluids is studied in the context of a Maxwell viscoelastic structural fluid model and compared to the purely viscous case. Solving iteratively the structural models together with the NavierStokes equation for the circular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdc757ca26f1f6e8ee30c0f8659d2807
http://hdl.handle.net/2445/60724
http://hdl.handle.net/2445/60724
Publikováno v:
Recercat. Dipósit de la Recerca de Catalunya
instname
Dipòsit Digital de la UB
Universidad de Barcelona
instname
Dipòsit Digital de la UB
Universidad de Barcelona
We study the dynamics of shear-band formation and evolution using a simple rheological model. The description couples the local structure and viscosity to the applied shear stress. We consider in detail the Couette geometry, where the model is solved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3edb1985a2447ac6129c6cf40a3d43f2
http://hdl.handle.net/2445/60723
http://hdl.handle.net/2445/60723