Institute of Physics of Materials AS CR, v. v. i. > People > Ostapovec Andrej

Mgr. Andrej Ostapovec, Ph.D.

Room421
Phone number+420 532 290 429
E-mail[javascript protected email address]
Researcher IDF-1958-2013
ORCID0000-0002-3781-4716
Positionresearcher - Multiscale Modelling and Measurements of Physical Properties

Scientific interest
  • Atomistic modelling of crystallographic defects in materials: grain boundaries, twin boundaries, dislocations.
  • Mechanisms of plasticity of lightweight metals.

Education
  • 2005-2009: Doctoral degree - University of Chemistry and Technology, Prague, Faculty of Chemical Technology, Metallurgy
  • 2003-2004: Master’s degree - V. N. Karazin Kharkiv National University, Faculty of Physics, Physics
  • 1999-2003: Bachelor’s degree - V. N. Karazin Kharkiv National University, Faculty of Physics, Physics
Work experiences
  • From 2021: Associate editor of „Philosophical Magazine“
  • From 2019: Member of the International Scientific Committee of the "International Conference on Intergranular and Interphase Boundaries in Materials" (IIB)
  • From 2015: Researcher in group of Multiscale Modelling and Measurements of Physical Properties, Institute of Physics of Materials, CAS
  • 2013-2015: Postdoc - Electrical and Magnetic Properties Group, Institute of Physics of Materials, CAS
  • 2009-2015: Postdoc - Department of Metals, Institute of Physics, CAS
  • 2006-2009: Ph.D. Student - Department of Metals, Institute of Physics, CAS
  • 2004-2005: Engineer - Department of Physics of Real Crystals, Institute for Low Temperature Physics and Engineering, Academy of Sciences of Ukraine, Kharkov, Ukraine
  International internships
  • 2021:   Visiting researcher - Centre d'Élaboration de Matériaux et d'Etudes Structurales (CERMES – CNRS), Toulouse, France (3 months)
  • 2013:   Visiting researcher - Universitat Politecnica de Catalunya, Barcelona, Spain (3 months)
  • 2011: Visiting researcher - Fraunhofer IWM Freiburg, Freiburg , Germany (2 months)
  • 2004: Intern - Ruhr-Universität Bochum, Bochum, Germany (1 month)
Projects
  • 01/2019-12/2021: Principal Investigator - Non-Schmid behavior of dislocations in magnesium and its alloys (Ministry of Education, Youth and Sports of the Czech Republic, Mobility project)
  • 01/2016-12/2018: Principal Investigator - Mechanisms of plastic deformation and twinning interfaces in hexagonal metals (Czech Science Foundation, Standard project)
  Awards
  • 2015: Otto Wichterle prize from Czech Academy of Sciences
 


2023

Máthis K., Farkas A., Knapek M., Ostapovec A., Farkas G., Németh G., Harcuba P., Drozdenko D.: The influence of gadolinium concentration on the twin propagation rate in magnesium alloys. J. Alloys Comp. 948 (2023) 169635

Zelený M., Ostapovec A., Fridrich L., Šesták P., Heczko M., Kruml T.: On mechanical twinning in tetragonal lattice. Philos. Mag. 103 (2023) 119-136

Verma R., Ostapovec A.: On the interaction of migrating {11-26} twin boundary with nucleus of {10-12} twin in Mg at T -> 0 K. Low Temp. Phys. 49 (2023) 1257-1262



2022

Ostapovec A., Verma R., Serra A.: Unravelling the nucleation and growth of {1 1 -2 2} twins. Scr. Mater. 215 (2022) 114730

Verma R., Král L., Ostapovec A.: Faceting of {11-26} twin interfaces in rolled pure magnesium. Philos. Mag. 102 (2022) 861-874



2021

Ostapovec A., K. K., Máthis K., Šiška F.: Interaction of Migrating Twin Boundaries with Obstacles in Magnesium. Metals 11 (2021) 154

Pal-Val P., Vatazhuk O., Ostapovec A., Král L., Pinc J.: Thermoactivated Dislocation Motion in Rolled and Extruded Magnesium: Data of the Low-Temperature Acoustic Experiment . Metals 11 (2021) 1647

Kvashin N., Ostapovec A., Anento N., Serra A.: On the migration of {332}<110> tilt grain boundary in bcc metals and further nucleation of {112} twin. Comp. Mater. Sci. 196 (2021) 110509



2020

Ostapovec A., Serra A.: Review of Non-Classical Features of Deformation Twinning in hcp Metals and Their Description by Disconnection Mechanisms . Metals 10 (2020) 1134-1154



2019

Ostapovec A., Serra A., Pond R.: Non-diffusional growth mechanism of I1 basal stacking-faults inside twins in hcp metals. Scr. Mater. 172 (2019) 149-153

Ostapovec A., Gornakova A.: On faceting of {10 -11} and {10-12} twin boundaries in hcp metals. Mater. Lett. 247 (2019) 99-101



2018

Ostapovec A., Paidar V.: Some aspects of double twinning in hexagonal metals. Low Temp. Phys. 44 (2018) 1241-1244

Ostapovec A., Sheikh-Ali A.: Misorientation dependence of atomic structure and energy of symmetric tilt boundaries in magnesium. Philos. Mag. 98 (2018) 3235-3246

Ostapovec A., Vatazhuk O.: Non-Schmid behavior of extended dislocations in computer simulations of magnesium. Comp. Mater. Sci. 142 (2018) 261-267

Ostapovec A., Čapek J., Paidar V.: Secondary twinning in zinc. Philos. Mag. Lett. 98 (2018) 437-445

Káňa T., Ostapovec A., Paidar V.: The matrix-twin transition in a perfect Mg crystal: Ab initio study. Int. J. Plast. 108 (2018) 186-200

Sun Q., Ostapovec A., Zhang X., Tan L., Liu Q.: Investigation of twin-twin interaction in deformed magnesium alloy. Philos. Mag. 98 (2018) 741-751

K. K., Ostapovec A.: Variability of Twin Boundary Structure in Computer Simulations of Tensile Twins in Magnesium. Defect Diffus. Forum 385 (2018) 241-244

Paidar V., Ostapovec A., Káňa T.: Dislocation Content of Non-Classical Twin Boundaries in Hexagonal Metals . Acta Phys. Pol. A 134 (2018) 692-694



2017

Ostapovec A., Serra A.: Slip dislocation and twin nucleation mechanisms in hcp metals. J. Mater. Sci. 52 (2017) 533-540

Paidar V., Ostapovec A.: The balance between the energies of the symmetric (10-12) twin boundaries and asymmetric basal/prismatic interfaces in hcp metals. Mater. Lett. 198 (2017) 93-96

Ostapovec A., Buršík J., Krahula K., Král L., Serra A.: On the relationship between (1 1 -2 2) and (1 1 -2 6) conjugate twins and double extension twins in rolled pure Mg. Philos. Mag. 97 (2017) 1088-1101

Ostapovec A., Vatazhuk O.: Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium. Low Temp. Phys. 43 (2017) 421-427



2015

Ostapovec A., Buršík J., Gröger R.: Deformation due to migration of faceted twin boundaries in magnesium and cobalt. Philos. Mag. 95 (2015) 4106-4117

Gröger R., Leconte L., Ostapovec A.: Structure and stability of threading edge and screw dislocations in bulk GaN. Comp. Mater. Sci. 99 (2015) 195-202

Ostapovec A., Serra A.: Evolution of Matrix-Twin Interfaces of (1 0 -1 2) Twin in Magnesium. Acta Phys. Pol. A 128 (2015) 661-663



2014

Ostapovec A., Serra A.: Characterization of the matrix-twin interface of a (1012) twin during growth. Philos. Mag. 94 (2014) 2827-2839

Ostapovec A., Gröger R.: Twinning disconnections and basal-prismatic twin boundary in magnesium. Model. Simul. Mater. Sci. Eng. 22 (2014) 025015

Molnár P., Ostapovec A., Jäger A.: Reversible motion of twin boundaries in AZ31 alloy and new design of magnesium alloys as smart materials. Mater. & Design 56 (2014) 509-516

Ostapovec A., Molnár P., Lejček P.: Boundary plane distribution for 13 grain boundaries in magnesium. Mater. Lett. 137 (2014) 102-105

Ostapovec A., Molnár P., Gröger R.: On basal-prismatic twinning interfaces in magnesium. IOP Conf. Ser.: Mater. Sci. Eng. 63 (2014) 012134


Number of ProjectName
8J19UA037 Non-Schmid behavior of dislocations in magnesium and its alloys
16-14599S Mechanisms of plastic deformation and twinning interfaces in hexagonal metals