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Tytuł:
Optimization of simulation model parameters for solidification of metals with use of agent-based evolutionary algorithm
Optymalizacja parametrów modelu symulacyjnego procesu krzepnięcia metali z zastosowaniem agentowego algorytmu ewolucyjnego
Autorzy:
Kluska-Nawarecka, S.
Smolarek-Grzyb, A.
Byrski, A.
Wilk-Kołodziejczyk, D.
Powiązania:
https://bibliotekanauki.pl/articles/305357.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
numeryczna symulacja
algorytmy ewolucyjne
system agentowy
proces krzepnięcia odlewów
odlew
numerical simulation
evolutionary algorithm
agent systems
solidification casting process
casting
Opis:
The finite elements method (FEM) is currently widely used for simulation of thermal processes. However, one of still unresolved problems remains proper selection of mathematical model parameters for these processes. As far as modelling of cooling casts in forms is concerned, particular difficulties appear while estimating values of numerous coefficients such as: heat transport coefficient between metal and form, specific heat, metal and form heat conduction coefficient, metal and form density. Coefficients mentioned above depend not only on materials properties but also on temperature. In the paper the idea of optimalization of simulation method parameters based on adaptive adjustment of curve representing simulation result and result obtained in physical experiment is presented along with the idea of evolutionary and agent-based evolutionary optimization system designed to conduct such optimizations. Preliminary results obtained with use of ABAQUS system available in ACK CYFRONET and software developed at AGH-UST conclude the paper.
Metoda elementów skończonych (MES) znajduje obecnie liczne zastosowania w symulacji procesów cieplnych. Wciąż jednak nierozwiązalny pozostaje problem doboru niektórych współczynników modeli matematycznych tych procesów. Przy modelowaniu stygnięcia odlewów w formie, szczególne trudności powstają przy wyznaczeniu wartości licznych parametrów, np.: współczynnika transportu ciepła pomiędzy metalem a formą, ciepła właściwego, współczynnika przewodnictwa cieplnego metalu i formy, gęstości metalu i formy. Współczynniki te zależą nie tylko od właściwości materiałów, lecz również od temperatury. W artykule zaproponowano metodę optymalizacji wartości parametrów modelu opartą na adaptacyjnym dostosowaniu krzywej stanowiącej wynik symulacji do przebiegu uzyskanego w eksperymencie fizycznym z zastosowaniem algorytmu ewolucyjnego w wersji agentowej. Wstępne wyniki obliczeń zostały zrealizowane przy wykorzystaniu systemu ABAQUS dostępnego w ACK CYFRONET oraz oprogramowania opracowanego przez AGH-UST.
Źródło:
Computer Science; 2008, 9; 55-66
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Type and Shape of the Chill on Solidification Process of Steel Casting
Autorzy:
Jaromin, M.
Dojka, R.
Jezierski, J. R.
Dojka, M.
Powiązania:
https://bibliotekanauki.pl/articles/380243.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
crystallization process
computer simulation
steel casting
chill
proces krzepnięcia
proces krystalizacji
symulacja komputerowa
odlewy stalowe
chłód
Opis:
The article is a case study of the steel milling ring casting of about 6 tonnes net weight. The casting has been cast in the steel foundry the authors have been cooperating with. The aim was to analyse the influence of the shape of the chills and the material which was used to make them on the casting crystallization process. To optimally design the chills the set of the computer simulation has been carried out with 3 chills’ shape versions and 3 material’s versions and the results have been compared with the technology being in use (no chills). The proposed chills were of different thermal conductivity from low to high. Their shapes were obviously dependant on the adjacent casting surface geometry but were the result of the attempt to optimise their effect with the minimum weight, too. The chills working efficiency was analysed jointly with the previously designed top feeders system. The following parameters have been chosen to compare their effectiveness and the crystallization process: time to complete solidification and so-called fed volume describing the casting feeding efficiency. The computer simulations have been carried out with use of MagmaSoft v. 5.2 software. Finally, the optimisation has led to 15% better steel yield thanks to 60% top feeders weight reduction and 40% shorter solidification time. The steel ring cast with use of such technology fulfil all quality criteria.
Źródło:
Archives of Foundry Engineering; 2019, 1; 35-40
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Casting Velocity on Structure of Al Continuous Ingots
Autorzy:
Bartocha, D.
Wróbel, T.
Szajnar, J.
Adamczyk, W.
Jamrozik, W.
Dojka, M.
Powiązania:
https://bibliotekanauki.pl/articles/354184.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum
primary structure
ingot
continuous casting
simulation of solidification process
Opis:
The aim of paper was determination of influence of the casting velocity in horizontal continuous casting process on solidification phenomenon and next primary structure of aluminum ingots. In the range of studies was conducted the experiment concerning continuous casting of Al ingots with diameter 30 mm at velocity from 30 to 80 mm/min. Moreover was developed adequate to the real the virtual model of cooled water continuous casting mould, which was used in simulation of solidification process of Al continuous ingot, made in ANSYS Fluent software. In result was determined the influence of casting velocity and temperature of cooling water on position of crystallization front inside the continuous casting mould. While the shape and size of grains in primary structure of Al continuous ingots were determined on the basis of metallographic macroscopic studies. On the basis of the results analysis was affirmed that increase of casting velocity strongly influences on position of crystallization front and causes increase of temperature of ingot leaving the continuous casting mould. In result the increase of casting velocity supposedly leads to decrease of temperature gradient on crystallization front what creates coarse grains in primary structure of aluminum continuous ingots and caused low usable properties i.e. suitability to plastic deformation.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 3; 1609-1613
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensitivity of conti-casting process with respect to cooling conditions
Analiza wrażliwości procesu ciągłego odlewania na warunki chłodzenia wlewka
Autorzy:
Mochnacki, B.
Majchrzak, E.
Powiązania:
https://bibliotekanauki.pl/articles/281418.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
continuous casting
solidification process
sensitivity analysis
boundary element method
Opis:
In the first part of this paper mathematical description of heat transfer processes proceeding in the domain of continuous casting is presented. The approach called the second generation modelling is taken into account. In particular, the capacity of a source function in the energy equation is determined by the nucleation and growth laws and the Johnson-Mehl-Avrami-Kolmogorow theory. Next, on the basis of the methods of sensitivity analysis the influence of cooling conditions of the cast slab surface on the course of solidification process is analyzed. At the stage of numerical computations the boundary element method has been used. In the final part of the paper an example of computations is presented.
W pierwszej części pracy przedstawiono opis matematyczny krzepnięcia wlewka ciągłego wytwarzanego z czystego matalu. Do opisu wykorzystano podeście nazywane modelem drugiej generacji. W szczególności, wydajność wewnętrznych źródeł ciepła będąca składnikiem równania energii jest wyznaczana na podstawie praw zarodkowania i wzrostu oraz teorii Johnsona-Mehla-Avrami-Kołomogorowa. Następnie, wykorzystując metodę bezpośrednią analizy wrażliwości, badano wpływ warunków chłodzenia powierzchni wlewka na proces jego krzepnięcia. Na etapie obliczeń numerycznych zastosowano metodę elementów brzegowych. W końcowej części pracy pokazano przykład obliczeń numerycznych.
Źródło:
Journal of Theoretical and Applied Mechanics; 2002, 40, 1; 129-147
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Temperature and Velocity Fields During Filling of Continuous Casting Mould
Autorzy:
Sowa, L.
Skrzypczak, T.
Kwiatoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/379679.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
continuous casting
numerical simulation
molten metal flow
krzepnięcie
odlewanie
symulacja numeryczna
Opis:
In this paper, the mathematical model and numerical simulations of the molten steel flow by the submerged entry nozzle and the filling process of the continuous casting mould cavity are presented. In the mathematical model, the temperature fields were obtained by solving the energy equation, while the velocity fields were calculated by solving the momentum equations and the continuity equation. These equations contain the turbulent viscosity which is found by solving two additional transport equations for the turbulent kinetic energy and its rate of dissipation. In the numerical simulations, coupling of the thermal and fluid flow phenomena by changes in the thermophysical parameters of alloy depending on the temperature has been taken into consideration. This problem (2D) was solved by using the finite element method. Numerical simulations of filling the continuous casting mould cavity were performed for two variants of liquid metal pouring. The effect of the cases of pouring the continuous casting mould on the velocity fields and the solid phase growth kinetics in the process of filling the continuous casting mould was evaluated as these magnitudes have an influence on the high quality of the continuous cast steel slab.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 115-118
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of Casting Technologies for Al-Si-Cu Plate Casting
Autorzy:
Cupido, L. H.
Żak, P. L.
Powiązania:
https://bibliotekanauki.pl/articles/379873.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
information technology
foundry industry
aluminium alloy
oxide film
casting simulation
krzepnięcie stopu
technologia informatyczna
przemysł odlewniczy
stop aluminium
warstwa tlenkowa
symulacja odlewania
Opis:
During the casting of aluminium alloys, the susceptibility to form oxide films is high, due to the turbulent flow of the melt and constant exposure of new surface area. This have impact on the properties of the material and the service life of the casting components. Also, hydrogen solubility in the solid state are very low, which ends up being rejected and causing porosity. After pouring, when solidification occurs, another phenomenon arise called shrinkage. This require excess molten metal to be fed during this phase change to eliminate or reduce the effect of volumetric changes. Filling and feeding during aluminium casting is therefore of paramount importance, and careful steps needs to be undertaken to reduce possible defects in the castings. The objective is to apply studied literature guides and rules and simulate the casting process of aluminium alloys, and understand the how certain defects are occurring during this process. This is a preliminary study towards the understanding of the “macro evolution” of Al-Si-Cu alloy during solidification, which will be the bases for the study of microsegregation of the specified alloy.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3 spec.; 11-14
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Simulation of Directional Solidification Process of Single Crystal Ni- Based Superalloy Casting
Autorzy:
Szeliga, D.
Kubiak, K.
Sieniawski, J.
Powiązania:
https://bibliotekanauki.pl/articles/383046.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
single crystal
superalloys
nickel based superalloys
ProCAST
casting defects
numerical simulation
monokryształy
superstopy
nikiel
wady odlewu
symulacja numeryczna
Opis:
The analysis of influence of mould withdrawal rate on the solidification process of CMSX-4 single crystal castings produced by Bridgman method was presented in this paper. The predicted values of temperature gradient, solidification and cooling rate, were determined at the longitudinal section of casting blade withdrawn at rate from 1 to 6mm/min using ProCAST software. It was found that the increase of withdrawal rate of ceramic mould results in the decrease of temperature gradient and the growth of cooling rate, along blade height. Based on results of solidification parameter G/R (temperature gradient/solidification rate), maximum withdrawal rate of ceramic mould (3.5 mm/min), which ensures lower susceptibility to formation process of new grain defects in single crystal, was established. It was proved that these defects can be formed in the bottom part of casting at withdrawal rate of 4 mm/min. The increase of withdrawal rate to 5 and 6 mm/min results in additional growth of susceptibility of defects formation along the whole height of airfoil.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 111-118
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical modeling of the solidification process with consideration of shrinkage cavities formation and the influence of solid phase content on the feeding of the casting
Autorzy:
Węgrzyn-Skrzypczak, Ewa
Skrzypczak, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/24201503.pdf
Data publikacji:
2023
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
solidification process
finite element method
shrinkage cavity
computational mechanics
proces krzepnięcia
metoda elementów skończonych
jama skurczowa
mechanika komputerowa
Opis:
The paper focuses on the numerical modeling of the three-dimensional solidification process of steel using the finite element method (FEM). The model includes and discusses the formation of shrinkage cavities and the influence of the solid phase content on the feeding of the casting through the riser. The analysis assumed a critical value of the solid phase content, at which the transport of liquid phase from the riser to the casting is interrupted. The results of numerical simulation are presented to investigate the influence of this factor on the final quality of the casting. The model neglects the fluid motion in the liquid and solid-liquid regions and replaces the influence of the mold with appropriate boundary conditions.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2023, 22, 2; 75--86
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical Properties of Magnesium Alloys Produced by the Heated Mold Continuous Casting Process
Autorzy:
Okayasu, M.
Wu, S.
Tanimoto, T.
Takeuchi, S.
Powiązania:
https://bibliotekanauki.pl/articles/381654.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnesium alloy
unidirectional solidification
continuous casting
mechanical properties
microstructural characteristic
stop magnezu
krystalizacja kierunkowa
odlewanie ciągłe
właściwości mechaniczne
charakterystyka mikrostrukturalna
Opis:
Investigation of the tensile and fatigue properties of cast magnesium alloys, created by the heated mold continuous casting process (HMC), was conducted. The mechanical properties of the Mg-HMC alloys were overall higher than those for the Mg alloys, made by the conventional gravity casting process (GC), and especially excellent mechanical properties were obtained for the Mg97Y2Zn1-HMC alloy. This was because of the fine-grained structure composed of the α-Mg phases with the interdendritic LPSO phase. Such mechanical properties were similar levels to those for conventional cast aluminum alloy (Al84.7Si10.5Cu2.5Fe1.3Zn1 alloys: ADC12), made by the GC process. Moreover, the tensile properties (σ and εf) and fatigue properties of the Mg97Y2Zn1-HMC alloy were about 1.5 times higher than that for the commercial Mg90Al9Zn1-GC alloy (AZ91). The high correlation rate between tensile properties and fatigue strength (endurance limit: σl) was obtained. With newly proposed etching technique, the residual stress in the Mg97Y2Zn1 alloy could be revealed, and it appeared that the high internal stress was severely accumulated in and around the long-period stacking-order phases (LPSO). This was made during the solidification process due to the different shrinkage rate between α-Mg and LPSO. In this etching technique, micro-cracks were observed on the sample surface, and amount of micro-cracks (density) could be a parameter to determine the severity of the internal stress, i.e., a large amount to micro-cracks is caused by the high internal stress.
Źródło:
Archives of Foundry Engineering; 2016, 16, 4; 208-216
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of phase-change boundary position in continuous casting
Autorzy:
Ivanova, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/380559.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
information technology
foundry industry
mathematical modeling
temperature distribution
Stefan condition
phase change boundary
continuous casting
krzepnięcie stopu
technologia informacyjna
przemysł odlewniczy
modelowanie matematyczne
rozkład temperatury
warunek Stefana
granica międzyfazowa
odlewanie ciągłe
Opis:
The problem of determination of the phase-change boundary position at the mathematical modeling of continuous ingot temperature field is considered. The description of the heat transfer process takes into account the dependence of the thermal physical characteristics on the temperature, so that the mathematical model is based on the nonlinear partial differential equations. The boundary position between liquid and solid phase is given by the temperatures equality condition and the Stefan condition for the two-dimensional case. The new method of calculation of the phase-change boundary position is proposed. This method based on the finite-differences with using explicit schemes and on the iteration method of solving of non-linear system equations. The proposed method of calculation is many times faster than the real time. So that it amenable to be used for model predictive control of continuous semifinished product solidification.
Źródło:
Archives of Foundry Engineering; 2013, 13, 4; 57-62
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Modelling of Fluid Flow and Thermal Phenomena in the Tundish of CSC Machine
Autorzy:
Sowa, L.
Powiązania:
https://bibliotekanauki.pl/articles/380813.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
foundry industry
information technology
continuous casting
molten metal
krzepnięcie
przemysł odlewniczy
odlewanie ciągłe
metal płynny
Opis:
The mathematical and numerical simulation model of the liquid steel flow in a tundish is presented in this paper. The problem was treated as a complex and solved by the finite element method. The single-strand slab tundish is used to continuous casting slabs. The internal work space of the tundish was modified by the following flow control devices. The first device was a striker pad situated in the pouring tundish zone. The second device was a baffle with three holes and the third device was a baffle without hole. The main purpose of using these devices was to cause a quiet liquid mixing as well as give directional metal flow upwards which facilitated inclusion floatation. The interaction of flow control devices on hydrodynamic conditions was received from numerical simulation. As a result of the computations carried out, the liquid steel flow and steel temperature fields were obtained. The influence of the tundish modification on velocity fields in the liquid phase of steel was estimated, because these have an essential influence on high quality of a continuous steel cast slab.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1; 103-106
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Casting Die Cooling on Solidification Process and Microstructure of Hypereutectic Al-Si Alloy
Autorzy:
Władysiak, R.
Kozuń, A.
Pacyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/380676.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative foundry technology
innovative foundry material
casting die cooling
water mist
hypereutectic silumin
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
odlewanie kokilowe
mgła wodna
silumin nadeutektyczny
Opis:
The work is a continuation of research concerning the influence of intensive cooling of permanent mold in order to increase the casting efficiency of aluminium alloys using the multipoint water mist cooling system. The paper presents results of investigation of crystallization process and microstructure of synthetic hypereutectic alloys: AlSi15 and AlSi19. Casts were made in permanent mold cooled with water mist stream. The study was conducted for unmodified silumins on the research station allowing the cooling of the special permanent probe using a program of computer control. Furthermore the study used a thermal imaging camera to analyze the solidification process of hypereutectic silumins. The study demonstrated that the use of mold cooled with water mist stream allows in wide range the formation of the microstructure of hypereutectic silumins. It leads to higher homogeneity of microstructure and refinement of crystallizing phases and also it increases subsequently the mechanical properties of casting.
Źródło:
Archives of Foundry Engineering; 2016, 16, 4; 175-180
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using of Technology Semisolid Squeeze Casting by Different Initial States of Material
Autorzy:
Martinec, D.
Pastirčák, R.
Kantoríková, E.
Powiązania:
https://bibliotekanauki.pl/articles/379567.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative foundry technologies
innovative foundry materials
solidification process
squeeze casting
aluminium alloy
crystallisation under pressures
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
proces krzepnięcia
wyciskanie
stop aluminium
krystalizacja pod ciśnieniem
Opis:
The paper deals with the effect of heating of various prepared batch materials into semisolid state with subsequent solidification of the cast under pressure. The investigated material was a subeutectic aluminium alloy AlSi7Mg0.3. The heating temperature to the semisolid was chosen at 50% liquid phase. The used material was prepared in a variety of ways: heat treatment, inoculation and by squeeze casting. Also the influence of the initial state of material on inheritance of mechanical properties and microstructure was observed. The pressure was 100 MPa. Effect on the resulting casting structure, alpha phase distribution and eutectic silicon was observed. By using semisolid squeeze casting process the mechanical properties and microstructures of the casts has changed. The final microstructure of the casts is very similar to the microstructure that can be reached by technology of thixocasting. The mechanical properties by using semisolid squeeze casting has been increased except the heat treated material.
Źródło:
Archives of Foundry Engineering; 2020, 20, 1; 117-121
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Riser Shape on Feeding Effectiveness of Solidifying Casting
Autorzy:
Sowa, L.
Skrzypczak, T.
Kwiatoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/383146.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
castings defects
numerical simulation
liquid metal flow
proces krzepnięcia
wady odlewów
symulacja numeryczna
przepływ ciekłego metalu
Opis:
The mathematical model and numerical simulations of the solidification of a cylindrical shaped casting, which take into account the process of filling the mould cavity by liquid metal and feeding the casting through the riser during its solidification, are presented in the paper. Mutual dependence of thermal and flow phenomena were taken into account because have an essential influence on solidification process. The effect of the riser shape on the effectiveness of feeding of the solidifying casting was determined. In order to obtain the casting without shrinkage defects, an appropriate selection of riser shape was made, which is important for foundry practice. Numerical calculations of the solidification process of system consisting of the casting and the conical or cylindrical riser were carried out. The velocity fields have been obtained from the solution of momentum equations and continuity equation, while temperature fields from solving the equation of heat conductivity containing the convection term. Changes in thermo-physical parameters as a function of temperature were considered. The finite element method (FEM) was used to solve the problem.
Źródło:
Archives of Foundry Engineering; 2019, 4; 91-94
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of eutectic saturation influence on microstructure in thin wall ductile iron casting using cellular automata
Autorzy:
Burbelko, A. A.
Gurgul, D.
Kapturkiewicz, W.
Górny, M.
Powiązania:
https://bibliotekanauki.pl/articles/380375.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
proces krzepnięcia
automat komórkowy
modelowanie
solidification process
thin cellular automaton
modeling
Opis:
The mathematical model of the globular eutectic solidification in 2D was designed. Proposed model is based on the Cellular Automaton Finite Differences (CA-FD) calculation method. Model has been used for studies of the primary austenite and of globular eutectic grains growth during the ductile iron solidification in the thin wall casting. Model takes into account, among other things, non-uniform temperature distribution in the casting wall cross-section, kinetics of the austenite and graphite grains nucleation, and non-equilibrium nature of the interphase boundary migration. Calculation of eutectic saturation influence (Sc = 0.9 - 1.1) on microstructure (austenite and graphite fraction, density of austenite and graphite grains) and temperature curves in 2 mm wall ductile iron casting has been done.
Źródło:
Archives of Foundry Engineering; 2012, 12, 4; 11-16
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 29

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