Žádný přesný výsledek pro Žák, Viktor nebyl nalezen, zkusme místo něj použít k Viktor ...
Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
EFFECT OF HIP ON LOW CYCLE FATIGUE OF MAR-M247 AT 900°C
Šulák, Ivo ; Obrtlík, Karel ; Škorík, Viktor ; Hrbáček, K.
Polycrystalline nickel-base superalloy MAR-M247 is used for high temperature applications requiring excellent combination of fatigue properties, creep resistance and surface stability. These superior high temperature characteristics derive from the microstructure which habitually consists of face centred cubic matrix γ and precipitate γ´ (L12 type ordered structure). In the present work, the high temperature low cycle fatigue behaviour of cast nickel-base superalloy MAR-M247 in as received condition and in hot isostatically pressed (HIP) condition was studied. The microstructure of the materials is characterized by dendritic grains, carbides and casting defects. Distribution and size of defects in both materials were studied. Isothermal low cycle fatigue (LCF) tests were performed on cylindrical specimens under total strain control at 900°C in air. Cyclic stress–strain response and fatigue life of both materials were assessed. Beneficial effects of HIP process on cyclic stress-strain and fatigue life curves are discussed.
IGCT-Based Traction Drives for City Mass Transport
Bartoš, Stanislav ; Jehlička, Vladimír ; Valouch, Viktor ; Večerka, Tomáš ; Bureš, J. ; Kalčík, K. ; Venhoda, E.
The paper introduces a sunrise power semiconductor switching device called IGCT. Converters based on IGCTs might contribute in near future to the quality of electric drives.

Viz též: podobná jména autorů
4 Žák, Vladimír
12 Žák, Vojtěch
1 Žák, Václav
2 Žák, Vítězslav
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