Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Žák, L." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-6 z 6
    Tytuł:
    Modeling of TiN and Ti2O3 Precipitates Formation During Solidification of Steel
    Modelowanie powstawania wydzieleń TiN i Ti2O3 w procesie krzepnięcia stali
    Autorzy:
    Kalisz, D.
    Żak, P. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/356801.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titanium nitride
    solidification of steel
    segregation
    computer simulation
    azotek tytanu
    krzepnięcie stali
    segregacja
    symulacja komputerowa
    Opis:
    The formation of titanium nitride precipitations during solidification of steel was modeled with own computer software based on Ueshima model. A thermodynamic parameters database was worked out on the basis of literature study. Calculations were performed for two types of steel; one of them was high in titanium. The quantity of produced titanium nitrogen inclusions was calculated. The authors analyzed changes in nitrogen, titanium and oxygen content in the course of segregation of steel components on the solidification front. The influence of solidification rate on the process of precipitation formation was analyzed.
    Praca zajmuje się modelowaniem powstawania wydzieleń azotku tytanu w stali podczas krzepnięcia. Zastosowano procedurę obliczeniową z wykorzystaniem modelu Ueshima przy pomocy własnego programu komputerowego. Na podstawie studiów literaturowych przygotowano bazę danych parametrów termodynamicznych. Obliczenia wykonano dla dwóch gatunków stali, z których jeden charakteryzował się wysoką zawartością tytanu. Obliczono ilość powstających wydzieleń azotku tytanu, przeanalizowano zmiany zawartości azotu, tytanu i tlenu w wyniku procesów segregacji składników w stali na froncie krzepnięcia. Zbadano wpływ szybkości krzepniącia na proces powstawania wydzieleń.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 4; 1385-1391
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Agglomeration of Al2O3 Particles in Liquid Steel
    Autorzy:
    Kalisz, D.
    Żak, P. L.
    Kuglin, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/352045.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel
    agglomeration
    non-metallic inclusion
    PSG Method
    Opis:
    The removal of non-metallic inclusions from liquid steel is a result of co-operation of fluctuation, adhesion and agglomeration effects, with emphasis on agglomeration which plays the most important role. It is based on a few types of collisions between non-metallic particles, where turbulent collisions are most prominent. As a result of agglomeration, nonmetallic inclusions are intensely removed through flotation and increase of different dimensions of inclusions, which manifests itself with the occurrence of clusters mainly composed of Al2O3 precipitations. Authors investigated the agglomeration effect by making computer simulations with the use of the PSG method. The calculations were performed for a definite population of spherical particles of radius r in the steel volume. The applied calculation method allows for analyzing the dynamics of the collision process. The assumed initial number of particles remains constant, only the number of particles in specific size-groups varies. It was also revealed that the process of agglomerates formation is much faster for particles having a bigger initial radius. In the case of very small precipitations (r=1 μm) their removal through agglomeration is very difficult because the probability those collisions can take place between them rapidly decreases.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 2091-2096
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Interaction mechanism of non-metallic particles with crystallization front
    Autorzy:
    Żak, P. L.
    Kalisz, D.
    Rączkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/355462.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    non-metallic inclusion
    solidification front
    steel
    Opis:
    The process of steel solidification in the CCS mould is accompanied by a number of phenomena relating to the formation of non-metallic phase, as well as the mechanism of its interaction with the existing precipitations and the advancing crystallization front. In the solidification process the non-metallic inclusions may be absorbed or repelled by the moving front. As a result a specific distribution of non-metallic inclusions is obtained in the solidified ingot, and their distribution is a consequence of these processes. The interaction of a non-metallic inclusion with the solidification front was analyzed for alumina, for different values of the particle radius. The simulation was performed with the use of own computer program. Each time a balance of forces acting on a particle in its specific position was calculated. On this basis the change of position of alumina particle in relation to the front was defined for a specific radius and original location of the particle with respect to the front.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 1; 205-210
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical Model of SiC Particle Interaction with Solidification Front in AZ91/(SiCp) Composite
    Autorzy:
    Żak, P. L.
    Kalisz, D.
    Rączkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/355818.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    AZ91/SiCp composite
    solidification front
    modeling
    Opis:
    Presented work focused on the movement of SiC particles in the vicinity of the solidification front in AZ91/(SiC)p composite. Authors describe the mathematical model that governs this phenomenon. On the base of following numerical model own computer program was prepared. The behavior of a particle moving parallel to the solidification front was analyzed. Three variants of local velocity gradient of liquid metallic phase were analyzed for a particle of radius 10, 50 and 100 μm. At a bigger velocity gradient the SiC particle was observed to go down quicker and to move towards the solidification front. This effect was stronger for SiC particles, which had a bigger radius, i.e. 100 and 50 μm.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 3; 1625-1628
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer Simulation of Microsegregation of Sulphur and Manganese and Formation of MnS Inclusions while Casting Rail Steel
    Autorzy:
    Kalisz, D.
    Gerasin, S.
    Bobrowski, P.
    Żak, P. L.
    Skowronek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/355990.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    solidification
    stal szynowa
    MnS precipitates
    Opis:
    The quality of rail steel is conditioned by its high mechanic qualities, which greatly depend on the presence of undesired nonmetallic inclusions. The paper is devoted to the segregation of components, mainly sulphur, and the formation of manganese sulphide in the process of steel solidification, at the casting rate of 100 and 500 K/min. Sulphur is a steel component which disadvantageously influences its numerous parameters. The oxide-sulphide and sulphide precipitations cause cracks and lower the strength of the material. This phenomenon was modeled with the use of author’s computer program based on Matsumiya interdendritic microsegregation model. The main assumptions of this model and thermodynamic conditions of inclusion formation during casting of steel are discussed in this paper. Two cases were analyzed: in the first one the MnS was assumed to form a pure and constant compound, whereas in the other one the manganese sulfide was precipitated as a component of a liquid oxide solution, and its activity was lower than unity. The final conclusion is that chemical composition of steel is the major parameter deciding about the formation of MnS inclusions.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 1939-1944
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer Simulation of the Formation of Non-Metallic Precipitates During a Continuous Casting of Steel
    Autorzy:
    Kalisz, D.
    Żak, P. L.
    Tokarski, T.
    Wzorek, Ł.
    Suchy, J. S.
    Kiczor, M.
    Cieślak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/958226.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    non-metallic oxide precipitates
    modelling
    continuous casting of steel
    crystallization
    Opis:
    The authors own computer software, based on the Ueshima mathematical model with taking into account the back diffusion, determined from the Wołczyński equation, was developed for simulation calculations. The applied calculation procedure allowed to determine the chemical composition of the non-metallic phase in steel deoxidised by means of Mn, Si and Al, at the given cooling rate. The calculation results were confirmed by the analysis of samples taken from the determined areas of the cast ingot. This indicates that the developed computer software can be applied for designing the steel casting process of the strictly determined chemical composition and for obtaining the required non-metallic precipitates.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 1; 335-340
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies