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RNDr. Jiøí Svoboda, CSc., DSc.
Position: researcher
Group: Advanced High-temperature Materials Group
Rooms: 201
Phone numbers: +420 532 290 407
E-mail: svobj@DELETE-THIS.CZ@DELETE-THIS.COMipm.cz.COM
Projects
Improvement of Properties and Complex Characterization of New Generation Fe-Al-O Based Oxide Precipitation Hardened Steels
Utilization of theoretical and experimental approaches to sintering for tailoring the microstructure and properties of advanced ceramic materials
Inverse process chain modeling for Al-castings and induction heat treated steel rods
Preparation and Optimization of Creep Resistant Submicron-Structured Composite with Fe-Al Matrix and Al2O3 Particles
Development of new-generation ODS alloys and ODS composites
Z-phase strengthened steels for ultra-supercritical power plants
NETME Working - Innovation and Technology Transfer in Mechanical Engineering
The impact of atomic trapping on diffusion and phase transformation kinetics
Service security of welded high-strength pressurized pipelines
The role of stress state and vacancy supersaturation at the formation of binary hollow nanoparticles
Thermodynamic modelling of microstructure evolution in nanocomposites
Modelling of diffusional phase transformations in multi-component systems with multiple stoichiometric phases
Modelování kinetiky difúzních fázových transformací v pevných látkách
Modelling of diffusive and massive phase transformations in solids
Characterization of the precipitate microstucture
Publications:
2018
Rebhan B., Svoboda J., Panholzer M.
A thermodynamic study of voiding phenomena in Cu–Cu thermo-compression wafer bonding
Microsystem Technologies 24, Issue 1 (2018) p. 815-822

2017
Svoboda J., Fisher F.D.
Incorporation of vacancy generation/annihilation into reactive diffusion
concept – Prediction of possible Kirkendall porosity
Computational Materials Science 127 (2017) p. 136-140
Fischer F. D., Zickler G. A., Svoboda J.
Calibration of phase field parameters demonstrated on
kinetics of a shrinking single grain
Philosophical Magazine Letters 97, No.3 (2017) p. 92-100
Fischer F. D., Zickler G. A., Svoboda J.
Modelling of grain refinement driven by negative grain boundary energy
Philosophical Magazine 97, No. 23 (2017) p. 1963-1977
Hackl K., Fischer, F. D., Svoboda, J.
A variational approach to the modelling of grooving in a
three-dimensional setting
Acta Materialia 129 (2017) p. 331-342
Svoboda J., Fischer F. D., Kozeschnik E.
Thermodynamic modelling of irreversible processes
EMU Notes in Mineralogy 16 (2017), chapter 7, p. 181-214
Fischer F. D., Svoboda J.
Thermodynamic Treatment of Diffusive Phase Transformation (Reactive Diffusion)
Handbook of Solid State Diffusion 1 (2017), chapter 8, p. 391-434
Zaležák T., Šiška F., Stratil L., Luptáková N., Šmíd M., Bártková D., Svoboda J., Dlouhý A.
A Numerical Analysis of Deformation Processes in Oxide Dispersion-Strengthened Materials – Influence of Dislocation-Particle Interactions
Solid State Phenomena 258 SSP (2017) p. 106-109
Zaležák T., Svoboda J., Dlouhý A.
High temperature dislocation processes in precipitation hardened crystals investigated by a 3D discrete dislocation dynamics
International Journal of Plasticity 97 (2017) p. 1-23
Bártková D., Šmíd M., Mašek B., Svoboda J., Šiška F.
Kinetic study of static recrystallization in an Fe–Al–O ultra-fine-grained nanocomposite
Philosophical Magazine Letters 97, No. 10 (2017) p. 379-385
2016
Fischer F. D., Svoboda J., Antretter T., Kozeschnik E.:
Stress relaxation by power-law creep during growth of a misfitting precipitate
International Journal of Solids and Structures 96 (2016) p. 74-80
Riedel H., Svoboda J.:
A model for strain hardening, recovery, recrystallization and grain
growth with applications to forming processes of nickel base alloys
Materials Science & Engineering A 665 (2016) p. 175-183
Svoboda J., Fratzl P., Zickler G. A., Fischer F. D.:
A new treatment of transient grain growth
Acta Materialia 115 (2016) p. 442-447
Spusta T., Svoboda J., Maca K.:
Study of pore closure during pressure-less sintering of advanced oxide
ceramics
Acta Materialia 115 (2016) p. 347-353
Svoboda J., Shan Y. V., Kozeschnik E., Fischer F. D.:
A thermokinetic model for Mg–Si couple
formation in Al–Mg–Si alloys
Modelling and Simulation in Materials Science and Engineering 24 (2016) Article Number: 035021
Fischer F. D., Hackl K., Svoboda J.:
Improved thermodynamic treatment of vacancy-mediated diffusion
and creep
Acta Materialia 108 (2016) p. 347-354
Svoboda J., Fischer F. D., Riedel H., Kozeschnik E.:
Precipitate growth in multi-component systems with stress
relaxation by diffusion and creep
International Journal of Plasticity 82 (2016) p. 112-126
Abart R., Svoboda J., Jeøábek P., Karadeniz E. P., Habler G.
Interlayer growth kinetics of a binary solid-solution
based on the thermodynamic extremal principle:
application to the formation of spinel at periclase-corundum contacts
American Journal of Science 316 (2016) p. 309–328
Svoboda J., Fischer F.D.:
A self-consistent model for thermodynamics of multicomponent
solid solutions
Scripta Materialia 123 (2016) p. 154-157
Mašek B., Khalaj O., Nový Z., Kubina T., Jirková H., Svoboda J., Stadler C.
Behaviour of new ODS alloys under single and multiple deformation
Materials and Technology 50 (2016) p. 891-898
2015
Svoboda J., Shan Y.V., Fischer F.D.:
A new self-consistent model for thermodynamics of binary solutions
Scripta Mater. 105 (2015) p. 27-30
Svoboda J., Zickler G.A., Kozeschnik E., Fischer F.D.:
Kinetics of interstitial segregation in Cottrell atmospheres and grain boundaries
Philosophical Magazine Letters 95, 9 (2015) p. 458-465
Zenisek J., Kozeschnik E., Svoboda J., Fischer F.D.:
Modelling the role of compositional fluctuations in nucleation kinetics
Acta Mater. 91 (2015) p. 365-376
Fischer F.D., Svoboda J.:
Stress, deformation and diffusion interactions in solids - A simulation study
Journal of the Mechanics and Physics of Solids 78 (2015) p. 427-442
Fischer F.D., Svoboda J., Antretter T., Kozeschnik E.:
Relaxation of a precipitate misfit stress state by creep in the matrix
Int. J. Plasticity 64 (2015) p. 164-176
2014
Svoboda J., Fischer F.D.:
Abnormal grain growth: a non-equilibrium thermodynamic model for multi-grain binary systems
Modell. Simul. Mater. Sci. Eng. 22, 1 (2014) 015013 (p. 1-15)
Fischer F.D., Svoboda J.:
Diffusion of elements and vacancies in multi-component systems
Progress in Material Science, 60 (2014) p. 338-367
Fischer F.D., Svoboda J., Petryk H.:
Thermodynamic extremal principles for irreversible processes in materials science
Acta Mater. 67 (2014) p. 1-20
Svoboda J., Mori G., Prethaler A., Fischer F.D.:
Determination of trapping parameters and the chemical diffusion coefficient from hydrogen permeation experiments
Corr. Sci. 82 (2014) p. 93-100
2013
Svoboda J., Fischer F.D., Schillinger W.:
Formation of multiple stoichiometric phases in binary systems by combined bulk and grain boundary diffusion: Experiments and model
Acta mater. 61, 1 (2013) p. 32-39
Hackl K., Fischer F.D., Klevakina K., Renner J., Svoboda J.:
A variational approach to grooving and wetting
Acta Mater. 61, 5 (2013) p. 1581-1591
Appel F., Herrmann D., Fischer F.D., Svoboda J., Kozeschnik E.:
Role of vacancies in work hardening and fatigue of TiAl alloys
Int. J. Plasticity., 42 (2013) p. 83-100
Fischer F.D., Svoboda J., Kozeschnik E.:
Interstitial diffusion in systems with multiple sorts of traps
Modell. Simul. Mater. Sci. Eng. 21, 2 (2013) 025008 (p. 1-13)
Svoboda J., Shan Y.V., Kozeschnik E., Fischer F.D.:
Determination of depths of traps for interstitial from thermodynamic data: a new view on carbon trapping and diffusion
Modell. Simul. Mater. Sci. Eng. 21, 6 (2013) 065012 (p. 1-15)
Svoboda J., Fischer F.D.:
A new computational treatment of reactive diffusion in binary systems
Comput. Mater. Sci. 78 (2013) p. 39-46
Fischer F.D., Mori G., Svoboda J.:
Modelling the influence of trapping on hydrogen permeation in metals
Corr. Sci. 76 (2013) p. 382-389
2012
Svoboda J.; Fischer F. D.; McDowell D. L.
Derivation of the phase field equations from the thermodynamic extremal principle
Acta materialia 60, (2012), Issue: 1, pp.396-406, DOI: 10.1016/j.actamat.2011.09.044
Svoboda J.; Fischer F. D:
Modelling for hydrogen diffusion in metals with traps revisited
Acta materialia 60, (2012), Issue: 3, pp. 1211-1220, DOI: 10.1016/j.actamat.2011.11.025
Fischer F.D., Svoboda J, Hackl K:
Modelling the kinetics of a triple junction
Acta Mater. 60, (2012), p. 4704-4711, DOI: 10.1016/j.actamat.2012.05.018
2011
J. Svoboda and F.D. Fischer:
Stress development during reaction of metallic nanospheres with gas
Acta Materialia,Volume 59, Issue 1, January 2011, Pages 61-67
J. Svoboda and F.D. Fischer:
Modelling of the influence of the vacancy source and sink activity and the stress state on diffusion in crystalline solids
Acta Materialia,Volume 59, Issue 3, February 2011, Pages 1212-1219
Hackl, K, Fischer, FD, Svoboda, J.:
A study on the principle of maximum dissipation for coupled and non-coupled non-isothermal processes in materials,
Proceedings of the Royal Society A- Matematical Physical and Engineering Sciences, Vol. 467, 2128 (2011), pp 1186-1196
Svoboda, J., Fischer, FD., Leindl, M.:
Transient solute drag in migrating grain boundaries
Acta Materialia, Vol. 59, 17 (2011), pp 6556-6562
Fischer, FD., Svoboda, J.:
Chemically and mechanically driven creep due to generation and annihilation of vacancies with non-ideal sources and sinks
International Journal of Plasticity, Vol. 27, 9 (2011), pp 1384-1390
Ch. M. Ulrich, A. Hashibon, J. Svoboda, et al.:
Diffusion kinetics in aluminium-gold bond contacts from first-principles density functional calculations
Acta Materialia 59, (2011), pp. 7634-7644
2010
Svoboda J, Fischer FD, Abart R:
Modeling of diffusional phase transformation in multi-component systems with stoichiometric phases
ACTA MATERIALIA Vol.58, (2010), p. 2905-2911.
Fischer FD, Svoboda J :
Substitutional diffusion in multicomponent solids with non-ideal sources and sinks for vacancies
ACTA MATERIALIA Vol.58, (2010), p. 2698-2707.
Svoboda J, Fischer FD:
Model for coarsening of intergranular precipitates in multicomponent systems
SCRIPTA MATERIALIA Vol. 62, (2010), p. 754-757.
Kozeschnik E, Svoboda J, Radis R, et al:
Mean-field model for the growth and coarsening of stoichiometric precipitates at grain boundaries
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING Vol. 18, (2010)
2009
J. Svoboda, F.D. Fischer, P.H. Mayrhofer
A model for evolution of shape changing precipitates in multicomponent systems
Acta Materialia, Vol. 56, Issue 17,(2008), p. 4896
Fischer, F. D. - Svoboda, Jiøí - Gamsjäger, E.
Analysis of non-steady-state distribution functions for grain growth.
Philosophical Magazine. 89, 17 (2009), p. 1425
Svoboda, Jiøí - Fischer, F. D. - Vollath, D.
Modeling of formation of binary-phase hollow nanospheres from metallic solid nanospheres.
Acta Materialia. Vol. 57, 6 (2009), p. 1912
Svoboda, Jiøí - Fischer, F. D.
Vacancy-driven stress relaxation in layers.
Acta Materialia. Vol. 57, 16 (2009), p. 4649
2008
F.D. Fischer and J. Svoboda
Void growth due to vacancy supersaturation – A non-equilibrium thermodynamics study
Scripta Materialia, Volume 58, Issue 2, January 2008, Pages 93-95
Fischer, F. D., Svoboda, Jiøí, Gamsjäger, E., Oberaigner, E.
From distribution functions to evolution equations.
Acta Materialia. Vol. 56, No 19 (2008), p. 5395-5400.
Fischer, F. D., Svoboda, Jiøí
High temperature instability of hollow nanoparticles.
Journal of Nanoparticle Research. Vol. 10, 2 (2008), p. 255-261.
Gamsjäger, E., Svoboda, Jiøí, Fischer, F. D.
Solute drag or diffusion process in a migrating thick interface.
Philosophical Magazine Letters. Vol. 88, 6 (2008), p. 415-420.
Sonderegger, B., Kozeschnik, E., Leitner, H., Clemens, H., Svoboda, Jiøí, Fischer, F. D.
Computational analysis of the precipitation kinetics in a complex tool steel.
International Journal of Materials Research. Vol. 99, 4 (2008), p. 410-415.
Svoboda, Jiøí, Fischer, F. D., Mayrhofer, P. H.
A model for evolution of shape changing precipitates.
Acta Materialia. Vol. 56, 17 (2008), p. 4896-4904.
Svoboda, Jiøí, Fischer, F. D., Gamsjaeger, E.
Simulation of chemically driven inelastic strain in multi-component systems with non-ideal sources and sinks for vacancies.
Acta Materialia. Vol. 56, 3 (2008), p. 351-357.
Svoboda, Jiøí, Fischer, F. D., Vala, J.
Thermodynamic extermal principle and its application to Dufour and Soret effect and plasticity.
Classe di Scienze Fisiche, Matematiche e Naturali. Vol. 86, 1 (2008), p. 1-11.
Ženíšek, J., Svoboda, Jiøí, Kozeschnik, E., Fischer, F. D.
A combined cluster dynamics/kinetic Monte Carlo model for precipitate nucleation in interstitial/substitutional alloys.
Modelling and Simulation in Materials Science and Engineering. Vol. 16, 7 (2008), Art. N. 075005.
2007
E. Gamsjäger, J. Svoboda, F.D. Fischer and M. Rettenmayr
Kinetics of solute driven melting and solidification
Acta Materialia ,Vol. 55, Issue 8, May 2007, Pages 2599-2607
J. Svoboda and F.D. Fischer
A new approach to modelling of non-steady grain growth
Acta Materialia, Volume 55, Issue 13, August 2007, Pages 4467-4474
2006
Svoboda, J., Vala, J., Gamsjäger, E., Fischer, F. D.:
A thick-interface model for diffusive and massiv phase transformation in substitutional alloys.
Acta Materialia, 54,(2006), p. 3953-3960.
Svoboda, J., Gamsjaeger, E., Fischer, F. D.:
Influence of diffusional stress relaxation on growth of stoichiometric precipitates in binary systems.
Acta Materialia, 54,(2006), p. 4575-4581
Svoboda, J., Fischer, F. D., Fratzl, P.:
Diffusion and creep in multi-component alloys with non-ideal sources and sinks for vacancies.
Acta Materialia, 54, (2006), p. 3043-3053.
Kozeschnik, E., Svoboda, J., Fischer, F. D.:
Shape factors in modeling of precipitation.
Material Science and Engineering A: Structural materials. A 441, (2006), p. 68-72.
Svoboda, J., Gamsjäger, E., Fischer, F. D.:Modelling of massive transformation in substitutional alloys. Metallurgical and Materials Transactions A, 37, 2006), p. 125-132.
Gamsjäger, E., Militzer, M., Fazeli, F., Svoboda, J., Fischer, F. D.:
Interface mobility in case of the austenite to ferrite phase transformation.
Computational Materials Science, 37, 1-2 (2006), p. 94-100.
Svoboda, J., Gamsjäger, E., Fischer, F. D., Kozeschnik, E.: Modelling of kinetics of diffusive phase transformation in binary systems with multiple stoichiometric phases.
Journal of Phase Equilibria and Diffusion, 27, 6 (2006), p. 622-628.
2005
Ženíšek, J., Svoboda, J., Fischer, F.D.:
Defect and Diffusion Forum, 237-240 (2005) 1168-1173
Hartmann, M., Weinkamer, R., Fratzl, P., Svoboda, J., Fischer, F.D.:
Phil. Mag., 85 (2005) 1243-1260
Gamsjäger, E., Svoboda, J., Fischer, F.D.:
Comput. Mater. Sci., 32 (2005) 360-369
Svoboda, J., Vala, J., Gamsjäger, E., Fischer, F.D.:
Defect and Diffusion Forum, 237-240 (2005) 647-652
Svoboda, J., Gamsjäger, E., Fischer, F.D.:
Solid State Transformation and Heat Treatment (A. Hazotte, Edt.), Wiley-VCH Verlag, Weinheim (2005) 26-33
Ženíšek, J., Svoboda, J., Fischer, F.D.:
Phil. Mag., 85 (2005) 2363-2389
2004
Gamsjäger, E., Fischer, F.D., Svoboda, J.:
Mater. Sci. Eng. A, A365 (2004) 291-297
Svoboda, J., Fischer, F.D., Fratzl, P., Kozeschnik; E.:
Mat. Sci. Engng. A, 385 (2004) 166-174
Kozeschnik, E., Svoboda, J., Fratzl, P., Fischer, F.D.:
Mat. Sci. Engng. A, 385 (2004) 157-165
Svoboda, J., Gamsjäger, E., Fischer, F.D., Fratzl, P.:
Acta mater., 52 (2004) 959-967
Gamsjäger, E., Fischer, F.D., Svoboda, J.:
Journal de Physique IV, 120 (2004) 79-84
Gamsjäger, E., Fischer, F.D., Svoboda, J.:
"Distortion Engineering – Verzugsbeherrschung in der Fertigung", Sonderforschungsbereich 570, Universität Bremen, Kolloquium, Band 2 (2004) 61-76
Leitner, H., Staron, P., Bischof, M., Clemens, H., Kozeschnik, E., Svoboda, J., Fischer, F.D.:
Proc. Materials Science & Technology 2004, TMS, Warrendale (2004) 623-632
Kozeschnik, E., Svoboda, J., Fischer, F.D.:
CALPHAD, 28 (2004) 379-382
2003
Fischer, F.D., Simha, N.K., Svoboda, J.:
ASME J. Eng. Mat. & Technology, 125 (2003) 266-276
Gamsjäger, E., Fischer, F.D., Svoboda, J.:
ASME J. Eng. Mater. Technol., 125 (2003), 22-26
Fischer, F.D., Svoboda, J., Fratzl, P.:
Phil. Mag. A, 83 (2003) 1075-1093
Gamsjäger, E., Fischer, F.D., Svoboda, J.:
Transformation and Deformation Mechanisms in Advanced High Strength Steels, (M. Militzer, W.J. Poole, E. Essadiqi, Edts.), MET SOC (Metallugical Society of CIM) Montréal, Canada, (2003) 187-201
Kozeschnik, E., Svoboda, J., Fischer, F.D.:
Modeling, Control, and Optimization in Ferrous and Nonferrous Industry, (F. Kongoli, B.G. Thomas, and K. Sawamiphakdi, Edts.), ISBN: 0-87339-561-1 (2003) 429-434
2002
Svoboda, J., Fischer, F.D., Fratzl, P., Kroupa, A.:
Acta mater., 50 (2002) 1369-1381
Gamsjäger, E., Antretter, T., Schmaranzer, C., Preis, W., Chimani, C.M., Simha, N.K., Svoboda, J., Fischer, F.D.:
Comp. Mat. Sci., 25 (2002) 92-99
Svoboda, J., Fischer, F.D., Gamsjäger, E.:
Acta mater., 50 (2002) 967-977
2001
Gamsjäger, E., Chimani, C.M., Fischer, F.D., Svoboda, J.:
J. Phys. IV France, 11 (2001) 149-156
Svoboda, J., Fischer, F.D., Fratzl, P., Gamsjäger, E., Simha, N.K.:
Acta mater., 49 (2001) 1249-1259
Gamsjäger, E., Fischer, F.D., Chimani, C.M., Svoboda, J.:
Proc. of the 4th international ESAFORM Conference on Material Forming, (A.M. Habraken, Edt.), University of Liège, Belgium, Vol. 2 (2001) 871-874
Gamsjäger, E., Fischer, F.D., Chimani, C.M., Svoboda, J.:
Int. J. Forming Processes, 4 (2001) 551-572
2000
Gamsjäger, E., Chimani, C.M., Fischer, F.D., Svoboda, J.:
Proc. EUROMAT 2000, Advances in Mechanical Behaviour, Plasticity and Damage (D. Miannay, P. Costa, D. François, A. Pineau, Edts.), Vol. 2 (2000) 853-858
Fischer, F.D., Chimani, C.M., Gamsjäger, E., Simha, N.K., Svoboda, J.:
Plastic and Viscoplastic Response of Materials and Metal Forming (A.S. Khan, H. Zhang, Y. Yuan, Edts.), Neat Press, Fulton (2000) 181-183
Svoboda J., Lukáš P.: Creep deformation modelling of superalloy single crystals. Acta mater. 48 (2000), 2519-2528.
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central european institute of technology


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Last update
14. 08. 2018