Search Results - "Kruml, T."

Microstructure degradation in high temperature fatigue of TiAl alloy by Kruml, T., Obrtlík, K.

“…Low cycle fatigue properties of lamellar TiAl with 8at.% Nb were studied at four temperatures: room temperature, 700, 750 and 800°C. Up to 750°C, stable cyclic…”
Get full text

Surface relief evolution and fatigue crack initiation in René 41 superalloy cycled at room temperature by Babinský, T., Kuběna, I., Šulák, I., Kruml, T., Tobiáš, J., Polák, J.

“…Surface relief evolution and fatigue crack initiation of René 41 superalloy was studied. The material was tested in two thermodynamical states: solutionised…”
Get full text

Influence of mean stress and light water reactor environment on fatigue life and dislocation microstructures of 316L austenitic steel by Spätig, P., Heczko, M., Kruml, T., Seifert, H.-P.

“…Influence of mean stress on fatigue life of the austenitic stainless steel 316 L in air and light water environments (boiling water reactor/hydrogen water…”
Get full text

Atomic resolution characterization of strengthening nanoparticles in a new high-temperature-capable 43Fe-25Ni-22.5Cr austenitic stainless steel by Heczko, M., Esser, B.D., Smith, T.M., Beran, P., Mazánová, V., McComb, D.W., Kruml, T., Polák, J., Mills, M.J.

“…Advanced scanning transmission electron microscopy (STEM) was used to study two distinct populations of nanoparticles associated with the extraordinary…”
Get full text

Deformation mechanisms of nanograined metallic polycrystals by Saada, G., Kruml, T.

“…This paper is an attempt to discuss the relevance of the physical concepts used to describe the plastic flow behaviour of a wide class of nanograined metallic…”
Get full text

Study of cyclic strain localization and fatigue crack initiation using FIB technique by Man, J., Vystavěl, T., Weidner, A., Kuběna, I., Petrenec, M., Kruml, T., Polák, J.

“…[Display omitted] ► FIB, ECCI and TEM for study of early fatigue damage in polycrystals. ► Dislocation structure corresponding to surface persistent slip…”
Get full text

Mechanical properties of high niobium TiAl alloys doped with Mo and C by Chlupová, A., Heczko, M., Obrtlík, K., Polák, J., Roupcová, P., Beran, P., Kruml, T.

“…Effects of alloying elements (i.e., variable content of Mo and C) on the microstructure and mechanical properties of five types of experimental material based…”
Get full text

On the origin of extraordinary cyclic strengthening of the austenitic stainless steel Sanicro 25 during fatigue at 700 °C by Heczko, Milan, Esser, Bryan D., Smith, Timothy M., Beran, Přemysl, Mazánová, Veronika, Kruml, Tomáš, Polák, Jaroslav, Mills, Michael J.

“…The origin of the extraordinary strengthening of the highly alloyed austenitic stainless steel Sanicro 25 during cyclic loading at 700 °C was investigated by…”
Get full text

Fatigue cracks in Eurofer 97 steel: Part I. Nucleation and small crack growth kinetics by Kruml, T., Polák, J.

“…Fatigue crack nucleation and growth were studied in the Eurofer 97 ferritic–martensitic steel at room temperature. Cylindrical specimens with a shallow notch…”
Get full text

Microstructure evolution during cyclic tests on EUROFER 97 at room temperature. TEM observation and modelling by Giordana, M.F., Giroux, P.-F., Alvarez-Armas, I., Sauzay, M., Armas, A., Kruml, T.

“…► Low cycle fatigue test are carried out on EUROFER 97 at room temperature. ► EUROFER 97 shows a pronounced cyclic softening accompanied by microstructural…”
Get full text

Short fatigue crack behaviour under low cycle fatigue regime by Hutař, P., Poduška, J., Šmíd, M., Kuběna, Ivo, Chlupová, A., Náhlík, L., Polák, J., Kruml, T.

“…This paper addresses the important issue of the description of short fatigue crack behaviour. It is typical for these cracks that they propagate under large…”
Get full text

Mechanical behaviour of ferritic ODS steels – Temperature dependancy and anisotropy by Fournier, B., Steckmeyer, A., Rouffie, A.-L., Malaplate, J., Garnier, J., Ratti, M., Wident, P., Ziolek, L., Tournie, I., Rabeau, V., Gentzbittel, J.M., Kruml, T., Kubena, I.

“…► We characterized the anisotropic mechanical behaviour of 3 ferritic ODS steels. ► Creep, tension, fatigue, toughness and impact tests were carried out. ► The…”
Get full text

Microstructural stability of ODS steels in cyclic loading by Kuběna, I., Polák, J., Plocinski, T. P., Hébert, C., Škorík, V., Kruml, T.

“…The remarkable microstructural stability of high chromium steels prepared by powder metallurgy and strengthened by dispersion of nanometric yttrium oxides in…”
Get full text

From dislocation cores to strength and work-hardening: A study of binary Ni3Al by KRUML, T, CONFORTO, E, LO PICCOLO, B, CAILLARD, D, MARTIN, J. L

Get full text

About the determination of the thermal and athermal stress components from stress-relaxation experiments by Kruml, T., Coddet, O., Martin, J.L.

“…The determination of the thermal and athermal stress components using relaxation experiments along a stress–strain curve is critically evaluated. Short-term…”
Get full text

Small fatigue crack growth in aluminium alloy EN-AW 6082/T6 by Jíša, D., Liškutín, P., Kruml, T., Polák, J.

“…The kinetics of small fatigue crack growth at room temperature was measured using light microscopy observation of the cracks in a shallow notch of a…”
Get full text

Multiaxial elastoplastic cyclic loading of austenitic 316L steel by Mazánová, V., Polák, J., Škorík, V., Kruml, T.

“…Cyclic stress-strain response and fatigue damage character has been investigated in austenitic stainless steel 316L. Hollow cylindrical specimens have been…”
Get full text

Fatigue cracks in Eurofer 97 steel: Part II. Comparison of small and long fatigue crack growth by Kruml, T., Hutař, P., Náhlík, L., Seitl, S., Polák, J.

“…The fatigue crack growth rate in the Eurofer 97 steel at room temperature was measured by two different methodologies. Small crack growth data were obtained…”
Get full text

Structure development during superplastic deformation of an Al-Mg-Sc-Zr alloy by Málek, P., Turba, K., Cieslar, M., Drbohlav, I., Kruml, T.

“…The Al-1.5 Mg-0.2 Sc-0.18 Zr (wt.%) alloy prepared using equal-channel angular pressing exhibits superplastic behavior in the temperature range from 573 to 773…”
Get full text

Characterizing thermally activated dislocation mobility by Martin, J.L., Kruml, T.

“…This review presents various examples of transient mechanical tests and their interpretation. Logarithmic relaxation experiments are analyzed by various…”
Get full text