Václav Sklenička

Thermal creep behavior of hydrogen-enriched Zr1%Nb alloy fuel cladding tube in phase transit regions

Václav Sklenička, Marie Kvapilová, Pétr Král, Jiri Dvorak

Among various degradation processes, thermal creep is considered a life-limiting factor for zirconium nuclear fuel cladding in light water reactors. In this work, the creep behavior of pre-oxidized and pre-hydrided in steam thin-walled Zr1wt.%Nb alloy fuel cladding tube was investigated in α-Zr …

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High-temperature creep behaviour of the GTD 111 nickel-based superalloy: Deformation mechanisms and activation energy analysis

Marie Kvapilová, Petr Kral, Jiri Dvorak, Jiří Zýka et autres

The creep behavior of the cast nickel-based superalloy GTD 111 was investigated over a range of temperatures and applied stresses relevant to high-temperature turbine applications. Constant-load creep tests were performed to evaluate the evolution of creep strain, minimum creep rate and time …

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High-temperature creep behaviour of the GTD 111 nickel-based superalloy: deformation mechanisms and activation energy analysis

Václav Sklenička, Marie Kvapilová, Petr Kral, Jiří Dvořák et autres

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High-temperature creep behaviour of the GTD 111 nickel-based superalloy: deformation mechanisms and activation energy analysis

Václav Sklenička, Marie Kvapilová, Petr Kral, Jiří Dvořák et autres

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Preprint for a publication "Stress-dependent creep behavior and microstructure of additively manufactured IN 939 superalloy"

Petr Král, Marie Kvapilová, Jiří Dvořák, Ivo Kuběna et autres

Preprint for a publication "Creep behavior and microstructural evolution of additively manufactured IN 939 superalloy tested at 700°C"

Petr Král, Marie Kvapilová, Jiří Dvořák, Ivo Kuběna et autres

High-temperature creep behaviour of the GTD 111 nickel-based superalloy: deformation mechanisms and activation energy analysis

Marie Kvapilová, Pétr Král, Jiri Dvorak, Jiří Zýka et autres

High-temperature creep behaviour of the GTD 111 nickel-based superalloy: deformation mechanisms and activation energy analysis

Marie Kvapilová, Pétr Král, Jiri Dvorak, Jiří Zýka et autres

Thermal creep in Zircaloy-4 nuclear fuel cladding alloy

Václav Sklenička, Marie Kvapilová, K. Kuchařová, P. Král et autres

The prime objective of any safety action in a nuclear power plant is to maintain the structural integrity of nuclear fuel cladding, which encases the radioactive fuel undergoing nuclear fission. Of different acting degradation processes, creep is regarded as one of the …

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Creep deformation and fracture of superalloy IN939 produced by L-PBF method

Marie Kvapilová, Ivo Kuběna, Ivo ŠULÁK, Jiří Dvořák et autres

Inconel 939 is a high-temperature nickel superalloy exhibiting an excellent combination of fatigue and creep properties with high oxidation and corrosion resistance. Therefore, it is often used for high-temperature applications, mainly in cast form. Laser powder bed fusion (L-PBF) technology has become …

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Microstructural Processes in Thermal Creep of Zirconium Nuclear Fuel Cladding Tubes

Pétr Král, K. Kuchařová, Marie Kvapilová, Jiří Dvořák et autres

The origin of the thermal creep of zirconium cladding tubes in all light water reactors is still the subject of deep confusion and intricate controversies. The reason for this inconvenient situation is obviously that microstructural processes in thermal creep remain poorly understood …

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Experimental investigation and predictive modeling of the thermal creep behavior of Zr1Nb alloy cladding

L. Kloc, Václav Sklenička

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