Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Péter Dusán Ispánovity"'
Autor:
Dávid Ugi, Kolja Zoller, Kolos Lukács, Zsolt Fogarassy, István Groma, Szilvia Kalácska, Katrin Schulz, Péter Dusán Ispánovity
Publikováno v:
Materials & Design, Vol 238, Iss , Pp 112682- (2024)
In single crystals, plastic deformations are predominantly governed by dislocation movement and interactions. The group of dislocations that creates strain gradients, known as geometrically necessary dislocations (GNDs), also deterministically contri
Externí odkaz:
https://doaj.org/article/b88f3c4e11a6472dab366148e308fbe1
Autor:
Péter Dusán Ispánovity, Dávid Ugi, Gábor Péterffy, Michal Knapek, Szilvia Kalácska, Dániel Tüzes, Zoltán Dankházi, Kristián Máthis, František Chmelík, István Groma
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
Metallic microsamples deform in a sequence of abrupt strain bursts. Here, the authors demonstrate by analysing the elastic waves emitted by these bursts that this intermittent process resembles earthquakes in several aspects, although on completely d
Externí odkaz:
https://doaj.org/article/6c298c35cdb8463ebf2624875665ee79
Autor:
Kristián Máthis, Michal Knapek, Filip Šiška, Petr Harcuba, Dávid Ugi, Péter Dusán Ispánovity, István Groma, Kwang Seon Shin
Publikováno v:
Materials & Design, Vol 203, Iss , Pp 109563- (2021)
Micro-deformation testing has recently gained far-reaching scientific importance as it provides intrinsic information on the dynamics of plastic deformation which is concealed when bulk materials are tested. In this work, single-crystal Mg micropilla
Externí odkaz:
https://doaj.org/article/c8f186676a8a48328ccd03a994ff3e86
Autor:
Sándor Lipcsei, Szilvia Kalácska, Péter Dusán Ispánovity, János L. Lábár, Zoltán Dankházi, István Groma
Publikováno v:
Physical Review Materials. 7
Publikováno v:
Comptes rendus physique, 22 (S3), 1–27
With decreasing system sizes, the mechanical properties and dominant deformation mechanisms of metals change. For larger scales, bulk behavior is observed that is characterized by a preservation and significant increase of dislocation content during
Publikováno v:
Acta Materialia. 200:211-222
High angular resolution electron backscatter diffraction (HR-EBSD) was coupled with focused ion beam (FIB) slicing to characterize the shape of the plastic zone in terms of geometrically necessary dislocations (GNDs) in W single crystal in 3 dimensio
Publikováno v:
Materials Theory, Vol 4, Iss 1, Pp 1-25 (2020)
The fundamental interactions between an edge dislocation and a random solid solution are studied by analyzing dislocation line roughness profiles obtained from molecular dynamics simulations of Fe0.70Ni0.11 Cr0.19 over a range of stresses and tempera
Plastic deformation of heterogeneous solid structures is often characterized by random intermittent local plastic events. On the mesoscale this feature can be represented by a spatially fluctuating local yield threshold. Here we study the validity of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6873f3793043d0a5b5292e496ff4317
Autor:
Dávid Ugi, Gábor Péterffy, Sándor Lipcsei, Zsolt Fogarassy, Edit Szilágyi, István Groma, Péter Dusán Ispánovity
Plastic deformation of microsamples is characterised by large intermittent strain bursts caused by dislocation avalanches. Here we investigate how ion irradiation affects this phenomenon during single slip single crystal plasticity. To this end, in s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5b233f3dc0fb0804a3c39bee8adc560
Publikováno v:
Physical Review B. 103
To develop a dislocation-based statistical continuum theory of crystal plasticity is a major challenge of materials science. During the last two decades, such a theory has been developed for the time evolution of a system of parallel edge dislocation