Institute of Physics of Materials AS CR, v. v. i. > People > Svoboda Jiří

RNDr. Jiří Svoboda, CSc., DSc.

Room201
Phone number+420 532 290 407
E-mail[javascript protected email address]
Researcher IDF-9810-2014
Positionresearcher - Advanced High-temperature Materials Group


2020

Chlupová A., Šulák I., Svoboda J.: High Temperature Cyclic Plastic Response of New-Generation ODS Alloy. Metals 10 (2020) 804

Drexler A., Siegl W., Ecker W., Tkadletz M., Kloesch G., Schnideritsch H., Mori G., Svoboda J., Fischer F.: Cycled hydrogen permeation through Armco iron - A joint experimental and modeling approach. Corros. Sci. 176 (2020) 109017

Hackl K., Fischer F., Zickler G., Svoboda J.: Are Onsager's reciprocal relations necessary to apply Thermodynamic Extremal Principles? . J. Mech. Phys. Solids 135 (2020) 103780

Hackl K., Fischer F., Svoboda J.: On the treatment of non-reciprocal rate-independent kinetics via thermodynamic extremal principles. Journal of the Mechanics and Physics of Solids 145 (2020) 104149

Scheiber D., Jechtl T., Svoboda J., Fischer F., Romaner L.: On solute depletion zones along grain boundaries during segregation. Acta Mater. 182 (2020) 100-107

Svoboda J., Luptáková N., Jarý M., Dymáček P.: Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C. Materials 13 (2020) 5070

Khalaj O., Saebnoori E., Jirková H., Chocholaty O., Svoboda J.: High Temperature and Corrosion Properties of A Newly Developed Fe-Al-O Based OPH Alloy. Metals 10 (2020) 167

Svoboda J., Kunčická L., Luptáková N., Weiser A., Dymáček P.: Fundamental Improvement of Creep Resistance of New-Generation Nano-Oxide Strengthened Alloys via Hot Rotary Swaging Consolidation. Materials 13 (2020) 5217

Gamsjäger E., Gschoepf ., Svoboda J.: Influence of Finite Mobilities of Triple Junctions on the Grain Morphology and Kinetics of Grain Growth. Metals 10 (2020) 185

Fintová S., Kuběna I., Luptáková N., Jarý M., Šmíd M., Stratil L., Šiška F., Svoboda J.: Development of advanced Fe-Al-O ODS alloy microstructure and properties due to heat treatment. J. Mater. Res. 35 (2020) 2789-2797

Svoboda J., Shan Y., Zickler G., Kozeschnik E., Fischer F.: Local approach for coarsening of precipitates. Scr. Mater. 178 (2020) 232-235

Stratil L., Horník V., Dymáček P., Roupcová P., Svoboda J.: The Influence of Aluminum Content on Oxidation Resistance of New-Generation ODS Alloy at 1200°C. Metals 10 (2020) 1478

Svoboda J., Holec D., Popov M., Zickler G., Fischer F.: Modelling of short-range ordering kinetics in dilute multicomponent substitutional solid solutions. Philos. Mag. 2020 (2020) 1-20

Khalaj O., Saebnoori E., Jirková H., Chocholaty O., Kučerová L., Hajšman J., Svoboda J.: The Effect of Heat Treatment on the Tribological Properties and Room Temperature Corrosion Behavior of Fe-Cr-Al-Based OPH Alloy. Materials 13 (2020) 5465

Svoboda J., Kunčická L., Luptáková N., Weiser A., Dymáček P.: Fundamental Improvement of Creep Resistance of New-Generation Nano-Oxide Strengthened Alloys via Hot Rotary Swaging Consolidation. Materials 13 (2020) 5217

Svoboda J., Horník V., Riedel H.: Modelling of Processing Steps of New Generation ODS Alloys. Metall. Mater. Trans. A 51 (2020) 5296-5305



2019

Svoboda J., Shan Y., Kozeschnik E., Fischer F.: Influence of misfit stress relaxation by power-law creep and plasticity on kinetics of coarsening of precipitates. Scr. Mater. 168 (2019) 81 -85

Hackl K., Khan A., Fischer F., Svoboda J.: Influence of bulk energy and triple junction mobility on interface kinetics - A tool for interpretation of experiments. Acta Mater. 174 (2019) 310-318

Svoboda J., Ecker W., Razumovskiy V., Zickler G., Fischer F.: Kinetics of interaction of impurity interstitials with dislocations revisited. Prog. Mater. Sci. 101 (2019) 172-206

Dymáček P., Svoboda J., Jirková H., Stratil L., Horník V.: Microstructure evolution and creep strength of new-generation oxide dispersion strengthened alloys with high volume fraction of nano-oxides. Procedia Struct. Integr. 17 (2019) 427-433

Svoboda J., Riedel H.: Modeling of spontaneous transformation of nitrides to Z phase accounting for stress relaxation by diffusion and interface activity. Comp. Mater. Sci. 161 (2019) 24-34

Dymáček P., Bártková D., Horník V., Stratil L., Mašek B., Svoboda J.: New Generation of ODS Alloys. Key Eng. Mater. 810 (2019) 113-118



2018

Scheiber D., Romaner L., Fischer F., Svoboda J.: Kinetics of grain boundary segregation in multicomponent systems - The example of a Mo-C-B-O system. Scr. Mater. 150 (2018) 110-114

Svoboda J., Fischer F.: Anisotropy of interstitial diffusion in bcc-crystals due to stress-induced unequal occupancies of different types of sites. Int. J. Solids Struct. 152-153 (2018) 66-70

Svoboda J., Fischer F.: Influence of accounting for translationa lmotion of grains on grain growth kinetics and size distribution. Scr. Mater. 146 (2018) 255-259

Svoboda J., Zickler G., Fischer F.: An innovative concept for interstitial diffusion in stressed crystals. Int. J. Solids Struct. 134 (2018) 173-180

Fischer F., Zickler G., Svoboda J.: Elastic stress-strain analysis of an infinite cylindrical inclusion with eigenstrain. Arch. Appl. Mech. 88 (2018) 453-460

Fischer F., Zickler G., Svoboda J.: Stress-strain analysis of the antiplane shear problem for an infinite cylindrical inclusion with eigenstrain an addendum to Arch. Appl. Mech. 2018. Arch. Appl. Mech. 88 (2018) 1209-1211

Záležák T., Šiška F., Stratil L., Fintová S., Horník V., Bártková D., Husák R., Svoboda J., Dlouhý A.: An integration of 3D discrete dislocation dynamics with numerical tensile testing. Acta Phys. Pol. A 134 (2018) 777-780

Svoboda J., Horník V., Stratil L., Hadraba H., Mašek B., Khalaj O., Jirková H.: Microstructure Evolution in ODS Alloys with a High-Volume Fraction of Nano Oxides. Metals 8 (2018) 1079

Khalaj O., Jirková H., Mašek B., Hassasroudsari P., Studecký T., Svoboda J.: Using thermomechanical treatments to improve the grain growth of new-generation ODS alloys. Mater. Technol. 52 (2018) 475-482

Gamsjäger E., Ogris D., Svoboda J.: Kinetics of Grain Boundary Networks Controlled by Triple Junction and Grain Boundary Mobility. Metals 8 (2018) 977



2017

Záležák T., Svoboda J., Dlouhý A.: High temperature dislocation processes in precipitation hardened crystals investigated by a 3D discrete dislocation dynamics. Int. J. Plast. 97 (2017) 1-23

Svoboda J., Fischer F.: Incorporation of vacancy generation/annihilation into reactive diffusion concept - Prediction of possible Kirkendall porosity. Comp. Mater. Sci. 127 (2017) 136-140

Fischer F., Zickler G., Svoboda J.: Calibration of phase field parameters demonstrated on kinetics of a shrinking single grain. Philos. Mag. Lett. 97 (2017) 92-100

Fischer F., Zickler G., Svoboda J.: Modelling of grain refinement driven by negative grain boundary energy. Philos. Mag. 97 (2017) 1963-1977

Svoboda J., Fischer F., Kozeschnik E.: Thermodynamic modelling of irreversible processes. EMU Notes Mineral. 16 (2017) 181-214

Hackl K., Fischer F., Svoboda J.: A variational approach to the modelling of grooving in a three-dimensional setting. Acta Mater. 129 (2017) 331-342

Rebhan B., Svoboda J., Panholzer M.: A thermodynamic study of voiding phenomena in Cu-Cu thermo-compression wafer bonding. Microsys. Technol. 1 (2017) 1-8

Bártková D., Šmíd M., Mašek B., Svoboda J., Šiška F.: Kinetic study of static recrystallization in an Fe-Al-O ultra-fine-grained nanocomposite. Philos. Mag. Lett. 97 (2017) 379-385

Záležák 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 Phenom. 258 (2017) 106-109



2016

Fischer F., Svoboda J., Antretter T., Kozeschnik E.: Stress relaxation by power-law creep during growth of a misfitting precipitate. Int. J. Solids Struct. 96 (2016) 74-80

Riedl H., Svoboda J.: A model for strain hardening, recovery, recrystallization and grain growth with applications to forming processes of nickel base alloys. Mater. Sci. Eng. A 665 (2016) 175-183

Svoboda J., Fratzl P., Zickler G., Fischer F.: A new treatment of transient grain growth. Acta Mater. 115 (2016) 442-447

Spusta T., Svoboda J., Maca K.: Study of pore closure during pressure-less sintering of advanced oxide ceramics. Acta Mater. 155 (2016) 347-353

Mašek B., Khalaj O., Nový Z., Kubina T., Jirková H., Svoboda J., Štádler C.: Behaviour of new ODS alloys under single and multiple deformation. Mater. Technol. 50 (2016) 891-898

Svoboda J., Shan Y., Kozeschnik E., Fischer F.: A thermokinetic model for Mg-Si couple formation in Al-Mg-Si alloys. Model. Simul. Mater. Sci. Eng. 24 (2016) 1-16

Svoboda J., Fischer F., Riedl H., Kozeschnik E.: Precipitate growth in multi-component systems with stress relaxation by diffusion and creep. Int. J. Plast. 82 (2016) 112-126

Fischer F., Hackl K., Svoboda J.: Improved thermodynamic treatment of vacancy-mediated diffusion and creep. Acta Mater. 108 (2016) 347-354

Abart R., Svoboda J., Jeřábek P., Povoden-Karadeniz E., Habler G.: Interlayer growth kinetics of a binary solid-solution based on the thermodynamic extremal principle: Application to the formation of spinelat periclase-corundum contacts. Amer. J. Sci. 316 (2016) 309-328

Svoboda J., Fischer F.: A self-consistent model for thermodynamics of multicomponent. Scr. Mater. 126 (2016) 154-157



2015

Ženíšek J., Kozeschnik E., Svoboda J., Fischer F.: Modelling the role of compositional fluctuations in nucleation kinetics. Acta Mater. 91 (2015) 365-376

Fischer F., Svoboda J.: Stress, deformation and diffusion interactions in solids - A simulation study. J. Mech. Phys. Solids 78 (2015) 427-442

Svoboda J., Shan Y., Fischer F.: A new self-consistent model for thermodynamics of binary solutions. Scr. Mater. 108 (2015) 27-30

Svoboda J., Zickler G., Kozeschnik E., Fischer F.: Kinetics of interstitial segregation in Cottrell atmospheres and grain boundaries. Philos. Mag. Lett. 95 (2015) 458-465

Khalaj O., Mašek B., Jirková H., Ronešová A., Svoboda J.: Investigation on new creep-and oxidation-resistant materials. Mater. Sci. Technol. 49 (2015) 645-651

Fischer F., Svoboda J., Antretter T., Kozeschnik E.: Relaxation of a precipitate misfit stress state by creep in the matrix. Int. J. Plast. 64 (2015) 164-176



2014

Svoboda J., Shan Y., Kozeschnik E., Fischer F.: Determination of depths of multiple traps for interstitials and their influence on diffusion kinetics. Model. Simul. Mater. Sci. Eng. 22 (2014) 065015

Fischer F., Svoboda J., Petryk H.: Thermodynamic extremal principles for irreversible processes in materials science. Acta Mater. 67 (2014) 1-20

Svoboda J., Fischer F.: Abnormal grain growth: a non-equilibrium thermodynamic model for multi-grain binary systems. Model. Simul. Mater. Sci. Eng. 22 (2014) 015013

Fischer F., Svoboda J.: Diffusion of elements and vacancies in multi-component systems. Prog. Mater. Sci. 60 (2014) 338-367

Fischer F., Svoboda J.: Formation of bubbles by hydrogen attack and elastic-plastic deformation of the matrix. Int. J. Plast. 63 (2014) 110-123

Svoboda J., Mori G., Prethaler A., Fischer F.: Determination of trapping parameters and the chemical diffusion coefficient from hydrogen permeation experiments. Corros. Sci. 82 (2014) 93-100

Svoboda J., Fischer F.: Generalization of the Lifshitz-Slyozov-Wagner coarsening theory to non-dilute multi-component systems. Acta Mater. 79 (2014) 304-314

Svoboda J., Stopka J., Fischer F.: Two-dimensional simulation of reactive diffusion in binary systems. Comp. Mater. Sci. 95 (2014) 309-315

Svoboda J., Fischer F., Klinger L., Rabkin E.: The effect of surface contact conditions on grain boundary interdiffusion in a semi-infinite bicrystal. Philos. Mag. 94 (2014) 3398-3412



2013

Hackl K., Fischer F., Klevakina K., Renner J., Svoboda J.: A Variational Approach to Grooving and Wetting. Acta Mater. 61 (2013) 1581-1591

Svoboda J., Fischer F., Schillinger W.: Formation of Multiple Stoichiometric Phases in Binary Systems by Combined Bulk and Grain Boundary Diffusion - Experiments and Model. Acta Mater. 61 (2013) 32-39

Appel F., Herrmann D., Fischer F., Svoboda J., Kozeschnik E.: Role of Vacancies in Work Hardening and Fatigue of TiAl Alloys. Int. J. Plast. 42 (2013) 83-100

Svoboda J., Fischer F.: A New Computational Treatment of Reactive Diffusion in Binary Systems. Comp. Mater. Sci. 78 (2013) 39-46

Fischer F., Mori G., Svoboda J.: Modelling the Influence of Trapping on Hydrogen Permeation in Metals. Corros. Sci. 76 (2013) 382-389

Fischer F., Svoboda J., Kozeschnik E.: Interstitial Diffusion in Systems with Multiple Sorts of Traps. Model. Simul. Mater. Sci. Eng. 21 (2013) 025008

Svoboda J., Shan Y., Kozeschnik E., Fischer F.: Determination of Depths of Interstitial Traps from Thermodynamic Data - A New View on Carbon Trapping and Diffusion. Model. Simul. Mater. Sci. Eng. 21 (2013) 065012



2012

Svoboda J., Fischer F.: Modelling for hydrogen diffusion in metals with traps revisited. Acta Mater. 60 (2012) 1211-1220

Svoboda J., Fischer F., McDowell D.: Derivation of the phase field equations from the thermodynamic extremal principle. Acta Mater. 60 (2012) 396-406

Svoboda J., Fischer F., Abart R.: Modeling the Role of Sources and Sinks for Vacancies on the Kinetics of Diffusive Phase Transformation in Binary Systems with Several Stoichiometric Phases. Philos. Mag. Lett. 92 (2012) 67-76

Fischer F., Svoboda J., Hackl K.: Modelling the Kinetics of a Triple Junction. Acta Mater. 60 (2012) 4704-4711



2011

Svoboda J., Fischer F.: Modelling of the influence of the vacancy source and sink activity and the stress state on diffusion in crystalline solids. Acta Mater. 59 (2011) 1212-1219

Fischer F., Svoboda J.: Chemically and Mechanically Driven Creep Due to Generation and Annihilation of Vacancies with Non-ideal Sources and Sinks. Int. J. Plast. 27 (2011) 1384-1390

Hackl K., Fischer F., Svoboda J.: A study on the principle of maximum dissipation for coupled and non-coupled non-isothermal processes in materials. Proc. Roy. Soc. Lond. A 467 (2011) 1186-1196

Svoboda J., Gamsjäger E., Fischer F., Liu Y., Kozeschnik E.: Diffusion Processes in a Migrating Interface - The Thick Interface Model. Acta Mater. 59 (2011) 4775-4786

Svoboda J., Fischer F.: Stress Development During Reaction of Metallic Nanospheres with Gas. Acta Mater. 59 (2011) 61-67

Fischer F., Svoboda J.: Modelling of Reaction of Metallic Nanospheres with Gas. Solid State Phenom. 172-174 (2011) 1028-1037

Ulrich C., Hashibon A., Svoboda J., Elsässer C., Helm D., Riedl H.: Diffusion kinetics in aluminium-gold bond contacts from first-principles density functional calculations. Acta Mater. 59 (2011) 7634-7644

Svoboda J., Fischer F., Leindl M.: Transient Solute Drag in Migrating Grain Boundaries. Acta Mater. 59 (2011) 6556-6562

Svoboda J., Gamsjäger E.: Modelling of Diffusive and Massive Phase Transformations in Binary Systems - Thick Interface Parametric Model. Int. J. Mater. Res. 102 (2011) 666-673

Fischer F., Svoboda J., Appel F., Kozeschnik E.: Modelling of Excess Vacancy Annihilation at Different Types of Sinks. Acta Mater. 59 (2011) 3463-3472


Number of ProjectName
21-02203X Beyond properties of current top performance alloys
20-14237S Microstructure and functional properties refinement by dopant distribution in transparent ceramics - combined experimental and theoretical approach
COMET K2 P1.8 Development of novel oxide dispersion strenghtened high entropy alloys (P1.8)
COMET K2 A1.23 Fundamentals and tools for integrated computational modeling and experimental characterization of materials in the atomic to micrometer scale range (A1.23)
17-01641S Improvement of Properties and Complex Characterization of New Generation Fe-Al-O Based Oxide Precipitation Hardened Steels
15-06390S Utilization of theoretical and experimental approaches to sintering for tailoring the microstructure and properties of advanced ceramic materials
A1.17 Inverse process chain modeling for Al-castings and induction heat treated steel rods
14-24252S Preparation and Optimization of Creep Resistant Submicron-Structured Composite with Fe-Al Matrix and Al2O3 Particles
A2.26 Development of new-generation ODS alloys and ODS composites
FP7-309916-2 Z-phase strengthened steels for ultra-supercritical power plants
CZ.1.07/2.4.00/31.0046 NETME Working - Innovation and Technology Transfer in Mechanical Engineering
A1.9 The impact of atomic trapping on diffusion and phase transformation kinetics
P204-10-1784 Modelling of diffusional phase transformations in multi-component systems with multiple stoichiometric phases
A6.14 Service security of welded high-strength pressurized pipelines
P108-10-1781 The role of stress state and vacancy supersaturation at the formation of binary hollow nanoparticles
OC10029 Thermodynamic modelling of microstructure evolution in nanocomposites
IAA200410601 Modelování kinetiky difúzních fázových transformací v pevných látkách
1-2005 Modelling of diffusive and massive phase transformations in solids
SP-16 Characterization of the precipitate microstucture