Exploració per autor "Serra Tort, Ana María"
Ara es mostren els items 23-41 de 41
-
Grain boundary mediated plasticity: the role of grain boundary atomic structure and thermal activation
(2018-03)
Article
Accés obertThe interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hybrid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorption ... -
Interaction of a dislocation pileup with {332} tilt grain boundary in bcc metals studied by MD simulations
(American Physical Society (APS), 2021-01)
Article
Accés obertThe sustainability and capacity of macroscopic deformation by polycrystalline metals and metallic alloys is controlled by the propagation of dislocation-mediated slip through grains. In this paper, the interaction of a ... -
Interaction of a mobile {1 1 2} grain boundary with radiation induced defects in a-Fe: Transformation of defects and impact on the shear-coupled grain boundary migration
(2020-06)
Article
Accés obertMobile grain boundaries (GB) may have specific interactions with radiation-induced defects compared with static GBs. In this paper, we consider the GB-defect interactions for the {1 1 2} GB that performs shear coupled grain ... -
Interaction of a moving {10(1)over-bar2} twin boundary with perfect dislocations and loops in a hcp metal
(2010)
Article
Accés restringit per política de l'editorialAtomic-scale computer simulation is used to investigate the interaction of a moving $10\overline{1}2$ twin boundary in a hcp metal with either a straight 1/3 $\left<{11\overline{2}0}\right>$(0001)dislocation lying perpendicular ... -
Interaction of a moving {1012} twin boundary with perfect dislocations and loops in a hcp metal
(2010-03-07)
Article
Accés restringit per política de l'editorialAtomic-scale computer simulation is used to investigate the interaction of a moving ${10\overline{1}2}$ twin boundary in a hcp metal with either a straight 1/3$\left<{10\overline{1}2}\right>$(0001) dislocation lying ... -
Interaction of carbon with vacancy and self-interstitial atom clusters in alpha-iron studied using metallic-covalent interatomic potential
(2011-01-31)
Article
Accés restringit per política de l'editorialThe presence of even small amount of carbon interstitial impurity affects properties of Fe and Fe-based ferritic alloys. From earlier experiments it follows that carbon exhibits considerably strong interaction with lattice ... -
Interaction of He and He-V clusters with self-interstitials and dislocations defects in bcc Fe
(2015-03-01)
Article
Accés obertThe understanding of helium effects in synergy with radiation damage is crucial for the development of structural steels for fusion applications. Recent investigations in ultra-pure iron, taken as a basic model, have shown ... -
Multiscale modelling for fusion and fission materials: the M4F project
(Elsevier, 2021-12)
Article
Accés obertThe M4F project brings together the fusion and fission materials communities working on the prediction of radiation damage production and evolution and their effects on the mechanical behaviour of irradiated ferritic/martensitic ... -
Non-diffusional growth mechanism of I1 basal stacking-faults inside twins in hcp metals
(2019-11)
Article
Accés obertDeformation twins in magnesium exhibit considerable densities of I1 basal-plane stacking-faults. Since these faults generally transect their host twin, they presumably lengthen concommitantly with boundary migration during ... -
On the common topological conditions for shear-coupled twin boundary migration in bcc and hcp metals
(Institute for Metals Superplasticity Problems, 2020-11)
Article
Accés obertThe most abundant deformation twins in metals with hcp and bcc crystallographic structures, i. e. (10-12) and (112) respectively, proceed with the same mechanism of deformation under an applied shear stress, i. e. shear-coupled ... -
On the migration of {3 3 2} <1 1 0> tilt grain boundary in bcc metals and further nucleation of {1 1 2} twin
(2021-08)
Article
Accés obert{3 3 2} <1 1 0> tilt grain boundaries (GB) move conservatively under a shear stress by the creation and glide of disconnections. When crystal dislocations interact with the GB they are absorbed and transformed into GB ... -
On the relationship between {1 1 2¯ 2} and {1 1 2¯ 6} conjugate twins and double extension twins in rolled pure Mg
(2017-02)
Article
Accés obertThe paper presents a new type of twin-like objects observed in rolled pure magnesium. They have {11¯26} and {11¯22} habit planes and their misorientations to the matrix are close to 56° and 63° about ¿10¯10¿ axis, ... -
Physical mechanisms and parameters for models of microstructure evolution under irradiation in Fe alloys. Part I: pure Fe
(Elsevier, 2021-12)
Article
Accés obertThis paper is the first of three that overview the main mechanisms that drive the microstructure evolution in Fe alloys under irradiation. It focuses on pure a-Fe and compiles the parameters that describe quantitatively ... -
Review of non-classical features of deformation twinning in hcp metals and their description by disconnection mechanisms
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-09)
Article
Accés obertThe study of deformation twinning has long history. However new, sometimes surprising, findings have shown that the phenomenon of deformation twinning still is not completely understood. The study of deformation twinning ... -
Simulació a escala atòmica de defectes en metalls i aliatges
(Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-16)
Comunicació de congrés
Accés obertLes propietats físiques dels materials amb estructura atòmica ordenada estan directament relacionades amb la estructura cristal·lina dels àtoms que els formen i, per tant, es veuen fortament modificades pels defectes ... -
Slip dislocation and twin nucleation mechanisms in hcp metals
(Springer, 2017-01)
Article
Accés obertA new nucleation mechanism is proposed for {101¯1} deformation twin in hcp materials. The mechanism is based on the results of atomistic computer simulations. It was found that under high shear stress applied on {101¯1} ... -
Structure and strength of (1 1 0) tilt grain boundaries in bcc Fe: an atomistic study
(2010-08)
Article
Accés restringit per política de l'editorialIn this work we study a set of $\left<{1\:1\:0}\right>$ tilt grain boundaries (GB) with a misorientation angle varied from 26º to 141º by applying atomistic calculations in α-Fe. A set of different interatomic potentials ... -
The role of nickel in radiation damage of ferritic alloys
(2015-02-01)
Article
Accés obertAccording to modern theory, damage evolution under neutron irradiation depends on the fraction of self-interstitial atoms (SIAs) produced in the form of one-dimensional glissile clusters. These clusters, having a low ... -
Unravelling the nucleation and growth of {11-22} twins
(2022-07)
Article
Accés obertA recently proposed mechanism of {11-22} twin nucleation in Ti by reverse phase transformation is analysed. It is demonstrated that, not only nucleation, but also growth mechanism of an already formed twin is connected to ...
