Ústav fyziky materiálů AV ČR, v. v. i. > Zaměstnanci > Svoboda Jiří

RNDr. Jiří Svoboda, CSc., DSc.

Místnost201
Telefon+420 532 290 407
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Researcher IDF-9810-2014
Pozicevědecký pracovník - Skupina pokrokových vysokoteplotních materiálů


2020

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

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

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

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

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

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

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

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

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

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

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

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

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


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