Ústav fyziky materiálů AV ČR, v. v. i. > Seznam projektů > Detail projektu

Fyzikální vlastnosti pokročilých materiálů ve vztahu k jejich mikrostruktuře a způsobu přípravy

Řešiteldoc. RNDr. Petr Lukáš, CSc., dr. h. c.
Spoluřešitelprof. Ing. Ivo Dlouhý, CSc.
Číslo projektuAV0Z20410507
AgenturaAkademie věd České republiky
Doba řešení2004-12-31 - 2011-12-30

Anotace
Fyzikální vlastnosti následujících pokročilých materiálů budou experimentálně a teoreticky studovány ve vztahu k jejich mikrostruktuře a způsobu přípravy: ultrajemnozrnné, mikrokrystalické, nanokrystalické a amorfní materiály; intermetalika; monokrystaly superslitin; pokročilé ocele; pokročilé Mg, Fe a Ni slitiny; paměťové slitiny; kompozity a nanokompozity; kovové lamináty; bezolovnaté pájky; magnetické polovodiče; polokovové magnety; magnetické multivrstvy; silicidy transitivních kovů. Cílem je objasn it, popsat a kvantifikovat mechanizmy procesů a vývoje mikrostruktury probíhající v pokročilých materiálech během creepu, únavy a lomu. Difúze, termodynamika, struktura fází, elektrické a magnetické charakteristiky budou studovány v relevantním rozsahu t eplot. To vše přispěje do celosvětové pokladnice znalostí o pokročilých materiálech (mechanizmy procesů, databáze experimentálních dat a vlastností) a následně k optimalizaci jejich přípravy.


2014

David B., Pizúrová N., Synek P., Kudrle V., Jašek O., Schneeweiss O.: Epsilon-Fe2O3 nanoparticles synthesized in atmospheric-pressure microwave torch. Mater. Lett. 116 (2014) 370-373

Kruml T., Obrtlík K.: Microstructure degradation in high temperature fatigue of TiAl alloy. Int. J. Fatigue 65 (2014) 28-32



2013

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



2012

Svoboda J., Fischer F., Uhlar 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

Polák J., Petrenec M., Man J., Obrtlík K.: Initiation and short crack growth in austenitic-ferritic duplex steel-effect of positive mean stress. Fatigue Fract. Eng. Mater. Struct. 35 (2012) 257-268

Životský O., Hendrych A., Klimsa L., Jirásková Y., Buršík J., Gómez J., Janickovic D.: Surface microstructure and magnetic behavior in FeSiB amorphous ribbons from magneto-optical Kerr effect. J. Magn. Magn. Mater. 324 (2012) 569-577

Čermák J., Král L.: Ageing of Mg-Ni-H hydrogen storage alloys. Int. J. Hydrogen Energy 37 (2012) 14257-14264

Man J., Vystavěl T., Weidner A., Kuběna I., Petrenec M., Kruml T., Polák J.: Study of cyclic strain localization and fatigue crack initiation using FIB technique. Int. J. Fatigue 39 (2012) 44-53

Obrtlík K., Pospíšilová S., Juliš M., Podrábský T., Polák J.: Fatigue behavior of coated and uncoated cast Inconel 713LC at 800 °C. Int. J. Fatigue 41 (2012) 101-106

Chlup Z., Hadraba H., Drdlík D., Maca K., Dlouhý I.: Development of internal stresses in alumina-zirconia laminates. Key Eng. Mater. 507 (2012) 221-226

Čermák M., Zouhar M.: Thin Static Charged Dust Majumdar-Papapetrou Shells with High Symmetry in D >= 4. Int. J. Theoretical Physics 51 (2012) 2455-2469

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

Čermák J., Král L.: Alloying of Mg/Mg2Ni eutectic by chosen non-hydride forming elements: Relation between segregation of the third element and hydride storage capacity. J. Power Sources 197 (2012) 116-120

Klusák J., Profant T., Kotoul M.: Conditions for crack initiation in an orthotropic bi-material notch. Mech. Adv. Mat. Struct. 19 (2012) 302-307

Gröger R., Vítek V.: Constrained Nudged Elastic Band calculation of the Peierls barrier with atomic relaxations. Model. Simul. Mater. Sci. Eng. 20 (2012) 035019

Sykora R., Turek I.: Transport Properties of Fe/GaAs/Ag(001) System. J. Nanosci. and Nanotech. 12 (2012) 7554-7557

Polák J., Man J., Petrenec M., Tobiáš J.: Fatigue behavior of ferritic-pearlitic-bainitic steel in loading with positive mean stress. Int. J. Fatigue 39 (2012) 103-108

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

Chlup Z., Hadraba H., Slabáková L., Drdlík D., Dlouhý I.: Fracture behaviour of alumina and zirconia thin layered laminate. J. Eur. Ceram. Soc. 32 (2012) 2057-2061

Čermák J., Král L.: Improvement of hydrogen storage characteristics of Mg/Mg2Ni by alloying: Beneficial effect of In. J. Power Sources 214 (2012) 208-215

Životský O., Jirásková Y., Hendrych A., Matějka V., Klimsa L., Buršík J.: Influence of Annealing Temperature and Atmosphere on Surface. IEEE Trans. Magnetics 48 (2012) 1367-1370



2011

Gröger R., Dudeck K., Nellist P., Vítek V., Hirsch P., Cockayne D.: Effect of Eshelby twist on core structure of screw dislocations in molybdenum: Atomic structure and electron microscope image simulations. Philos. Mag. 91 (2011) 2364

Zelený M., Friák M., Šob M.: Ab initio study of energetics and magnetism of Fe, Co, and Ni along the trigonal deformation path. Phys. Rev. B 83 (2011) 184424

Čermák J., David B.: Catalytic effect of Ni, Mg2Ni and Mg2NiH4 upon hydrogen desorption from MgH2. Int. J. Hydrogen Energy 36 (2011) 13614-13620

Kruml T., Polák J.: Fatigue cracks in Eurofer 97 steel: Part I. Nucleation and small crack growth kinetics. J. Nucl. Mater. 412 (2011) 2-6

Polák J., Petrenec M., Man J., Kruml T.: Cyclic plasticity and cyclic creep in austenitic-ferritic duplex steel. Key Eng. Mater. 465 (2011) 431-434

Chlup Z., Černý M., Strachota A., Dlouhý I.: Role of pyrolysis conditions on fracture behaviour of fibre reinforced Composites. Key Eng. Mater. 465 (2011) 455-458

Buršík J.: Elastic parameters of various rafted structures of model Ni-base alloys. Key Eng. Mater. 465 (2011) 85-88

Jirásková Y., Buršík J., Tuček J.: Phase and microstructural analysis of hot rolled FeNi42 sheet, its response in magnetic and mechanical properties. Steel Res. Int. 82 (2011) 898-904

Man J., Obrtlík K., Petrenec M., Beran P., Smaga M., Weidner A., Dluhoš J., Kruml T., Biermann H., Eifler D., Polák J.: Stability of austenitic 316L stainless steel against martensite formation during cyclic straining. Procedia Eng. 10 (2011) 1279-1284

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

Král P., Dvořák J., Kvapilová M., Svoboda M., Beneš V., Ponížil P., Šedivý O., Sklenička V.: Quantitative Characterization of Microstructure in Copper Processed by ECAP. Mater. Sci. Forum 667-669 (2011) 235-240

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

Všianská M., Šob M.: The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel. Prog. Mater. Sci. 56 (2011) 817-840

Couteau O., Kruml T., Martin J.: About the activation volume for cross-slip in Cu at high stresses. Acta Mater. 59 (2011) 4207-4215

Kruml T., Hutař P., Náhlík L., Seitl S., Polák J.: Fatigue cracks in Eurofer 97 steel: Part II. Comparison of small and long fatigue crack growth. J. Nucl. Mater. 412 (2011) 7-12

Polák J., Petrenec M., Kruml T., Chlupová A.: Cyclic plastic response and fatigue life in symmetric and asymmetric cyclic loading. Procedia Eng. 10 (2011) 568-577

David B., Pizúrová N., Schneeweiss O., Šantavá E., Jašek O., Kudrle V.: Alpha-Fe nanopowder synthesised in low-pressure microwave plasma and studied by Mossbauer spectroscopy. J. Phys.: Conf. Series 303 (2011) 012090

Pospíšilová S., Juliš M., Obrtlík K., Kianicová M., Podrábský T., Dvořáček O.: The Study of Microstructure and Properties of Al Diffusion Coating on Inconel 713LC. Key Eng. Mater. 465 (2011) 282-285

Káňa T., Šob M., Vítek V.: Ab initio study of phase transformations in transition-metal disilicides. Intermetallics 19 (2011) 919-926

Obrtlík K., Pospíšilová S., Juliš M., Podrábský T., Polák J.: Low Cycle Fatigue Behavior of Cast Superalloy Inconel 713LC with Al Coating at 800 C. Key Eng. Mater. 452-453 (2011) 265-268

Kvapilová M., Sklenička V., Dvořák J., Král P.: An Evaluation of Creep Mechanisms in Ultrafine-Grained Metals. Key Eng. Mater. 465 (2011) 382-385

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

Gröger R., Lookman T.: Influence of dislocations on the spatial variation of microstructure in martensites. Key Eng. Mater. 465 (2011) 77-80

Friák M., Hickel T., Körmann F., Udyansky A., Dick A., Pezold J., Ma D., Kim O., Counts W., Šob M., Gebhardt T., Music D., Schneider J., Raabe D., Neugebauer J.: Determining the elasticity of materials employing quantum-mechanical approaches: From the electronic ground state to the limits of materials stability. Steel Res. Int. 82 (2011) 88-100

Saada G., Kruml T.: Deformation mechanisms of nanograined metallic polycrystals. Acta Mater. 59 (2011) 2565-2574

Všianská M., Šob M.: Magnetically dead layers at sp-impurity-decorated grain boundaries and surfaces in nickel. Phys. Rev. B 84 (2011) 014418

Šmíd M., Petrenec M., Polák J., Obrtlík K., Chlupová A.: Analysis of the Effective and Internal Cyclic Stress Components in the Inconel Superalloy Fatigued at Elevated Temperature. Adv. Mater. Res. 278 (2011) 393-398

David B., Pizúrová N., Schneeweiss O., Kudrle V., Jašek O., Synek P.: Iron-based nanopowders containing alpha-Fe, Fe3C, and gamma-Fe particles synthesised in microwave torch plasma and investigated with Mossbauer spectroscopy. Japan. J. Applied Phys. 50 (2011) 08JF11

Polák J., Petrenec M., Man J.: Cyclic plasticity, cyclic creep and fatigue life of duplex stainless steel in cyclic loading with positive mean stress. Kovové materiály 49 (2011) 347-354

Chlup Z., Černý M., Strachota A., Kozák V.: Properties of modified polysiloxane based ceramic matrix for long fibre reinforced composite materials. Plastics, Rubber and Composites 40 (2011) 380-385

Kudrnovský J., Drchal V., Khmelevskyi S., Turek I.: Effects of atomic and magnetic order on electronic transport in Pd-rich Pd-Fe alloys. Phys. Rev. B 84 (2011) 214436

Kvapilová M., Kuchařová K., Sklenička V., Svoboda M., Hrbáček K.: Creep behaviour and microstructure changes of model cast Ni-Cr-W-C alloys. Procedia Eng. 10 (2011) 839-844

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

Káňa T., Šob M., Vítek V.: Transformation paths in transition-metal disilicides. Key Eng. Mater. 465 (2011) 61-64

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



2010

Sato K., Bergqvist L., Kudrnovský J., Dederichs P., Eriksson O., Turek I., Sanyal B., Bouzerar G., Katayama-Yoshida H., Dinh V., Fukushima T., Kizaki H., Zeller R.: First-principles theory of dilute magnetic semiconductors. Rev. Mod. Phys. 82 (2010) 1633-1690

Klusák J., Knésl Z.: Reliability assessment of a bi-material notch: Strain energy density factor approach. Theor. Appl. Fract. Mech. 53 (2010) 89-93

Obrtlík K., Juliš M., Man J., Podrábský T., Polák J.: Extrusion and intrusion evolution in cyclically strained cast superalloy Inconel 738LC using confocal laser scanning microscope and AFM. J. Phys.: Conf. Series 240 (2010) 012054

Gröger R., Lookman T., Saxena A.: Incompatibility of strains and its application to mesoscopic studies of plasticity. Phys. Rev. B 82 (2010) 144104

Máca F., Drchal V., Turek I., Bengone O., Redinger J., Kudrnovský J.: Antiferromagnetic ordering in the Fe(001) monolayer mediated by the Ir substrate. J. Surf. Sci. Nanotechnol. 8 (2010) 152-156

Ondráček M., Bengone O., Kudrnovský J., Drchal V., Máca F., Turek I.: Magnetic phase stability of monolayers: Fe on a Ta(x)W(1-x) (001) random alloy as a case study. Phys. Rev. B 81 (2010) 064410

Man J., Weidner A., Kuběna I., Vystavěl T., Skrotzki W., Polák J.: Application of FIB technique to study early fatigue damage in polycrystals. J. Phys.: Conf. Series 240 (2010) 012058

Drchal V., Ondráček M., Kudrnovský J., Bengone O., Turek I., Máca F.: Exchange interactions in the bcc Fe/TaW(001) system. J. Surf. Sci. Nanotechnol. 8 (2010) 157-160

Carva K., Turek I.: Out-of-plane spin-transfer torques: First-principles study. J. Magn. Magn. Mater. 322 (2010) 1085-1087

Man J., Valtr M., Weidner A., Petrenec M., Obrtlík K., Polák J.: AFM study of surface relief evolution in 316L steel fatigued at low and high temperatures. Proc. Eng. 2 (2010) 1625-1633



2009

Polák J., Man J., Vystavěl T., Petrenec M.: The shape of extrusions and intrusions and initiation of stage I fatigue cracks. Mater. Sci. Eng. A 517 (2009) 204-211

Man J., Obrtlík K., Polák J.: Extrusions and intrusions in fatigued metals. Part 1. State of the art and history. Philos. Mag. 89 (2009) 1295-1336

Man J., Klapetek P., Man O., Weidner A., Obrtlík K., Polák J.: Extrusions and intrusions in fatigued metals. Part 2. AFM and EBSD study of the early growth of extrusions and intrusions in 316L steel fatigued at room temperature. Philos. Mag. 89 (2009) 1337-1372

Grujić A., Žák T., Talijan N., Stajić-Trošić J., Ćosović A.: A Comparative Thermomagnetic Study of Melt-spun Nd-Fe-B Alloys with Different Nd Content. Sci. Sintering 41 (2009) 337-345



2008

Obrtlík K., Chlupová A., Petrenec M., Polák J.: Low cycle fatigue of cast superalloy Inconel 738LC at high temperature. Key Eng. Mater. 385-387 (2008) 581-584



2007

Polák J., Man J., Vystavěl T., Zouhar L.: Fatigue crack initiation in crystalline materials - experimental evidence and models. Key Eng. Mater. 345-346 (2007) 379-382



2006

Petrenec M., Polák J., Obrtlík K., Man J.: Dislocation structures in cyclically strained X10CrAl24 ferritic steel. Acta Mater. 54 (2006) 3429-3443



2005

Polák J.: Cyclic plastic response and fatigue life of duplex and superduplex stainless steel. Kovové materiály 43 (2005) 280-289