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Tytuł:
Preparation vermicular graphite in thin and thick wall iron castings
Autorzy:
Kopyciński, D.
Guzik, E.
Nowak, A.
Ronduda, M.
Sokolnicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/382764.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
żeliwo wermikularne
żeliwo sferoidalne
tlen
żeliwo
vermicular cast iron
ductile cast iron
Tundish method
oxygen
cast iron
Opis:
The results of studies on the use of magnesium alloy in modern Tundish for production of vermicular graphite cast irons were described. This paper describes the results of using a low-magnesium ferrosilicon alloy for the production of vermicular graphite cast irons. The paper presents a vermicular (and nodular) graphite in different walled castings. The results of trials have shown that the magnesium Tundish process can produce high quality vermicular graphite irons under the specific industrial conditions of Foundries - Odlewnie Polskie S.A. in Starachowice. In this work describes too preliminary studies on the oxygen state in cast iron and their effect on graphite crystallization.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 41-44
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Fe-Ti Inoculation on Solidification, Structure and Mechanical Properties of High Chromium Cast Iron
Autorzy:
Kopyciński, D.
Siekaniec, D.
Szczęsny, A.
Guzik, E.
Nowak, A.
Powiązania:
https://bibliotekanauki.pl/articles/353234.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high chromium cast iron
inoculation
titanium
mechanical properties
Opis:
The results of studies of the effect of different amounts of the Fe-Ti inoculant on structure and selected mechanical properties of High Chromium Cast Iron (conventionally abbreviated as HCCI) are presented. The main purpose of the inoculation is structure refinement and hence the improvement of casting properties. Generally considered a strong carbide-forming element, titanium is an effective inoculant for the high chromium cast iron. However, there is an optimal amount of titanium addition beyond which the mechanical properties begin to deteriorate. The studies enabled determining the amount of Fe-Ti inoculant optimal for the cast iron of a given chemical composition.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 2183-2187
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of high-quality aluminium cast iron
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Gilewski, R.
Powiązania:
https://bibliotekanauki.pl/articles/382423.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium
żeliwo
Al4C3
TiC
VC
faza międzymetaliczna FeAl
aluminidek żelaza
aluminium cast iron
intermetallic FeAl
iron aluminides
Opis:
In this study presents the analyse of aluminium iron cast structure (as-cast condition) which are used in high temperature. While producing the casts of aluminium iron major influence has been preserve the structure of technological process parameters. The addition to Fe-C-Al alloy V, Ti, Cr leads to the improvement of functional and mechanical cast qualities. In this study, a method was investigated to eliminate the presence of undesirable Al4C3 phases in a aluminium cast iron structure and thus improve the production process. V and Ti additions in aluminium cast iron allows to development of FeAl - VC or TiC alloys. In particular, V or Ti contents above 5 wt.% were found to totally eliminate the presence of Al4C3. In addition, preliminary work indicates that the alloy with the FeAl - VC or TiC structure reveals high oxidation resistance. The introduction of 5 wt.% chromium to aluminium cast iron strengthened Al4C3 precipitate. Thus, the resultant alloy can be considered an intermetallic FeAl matrix strengthened by VC and TiC or modified Al4C3 reinforcements.
Źródło:
Archives of Foundry Engineering; 2012, 12, 1; 53-56
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of structure and abrasion resistance of the metal composite based on an intermetallic FeAl phase with VC and TiC precipitates
Autorzy:
Kopyciński, D.
Guzik, E.
Gilewski, R.
Szczęsny, A.
Dorula, J.
Powiązania:
https://bibliotekanauki.pl/articles/379554.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium cast iron
Al4C3
TiC
VC
intermetallic FeAl
iron aluminides
aluminium
żeliwo
faza międzymetaliczna FeAl
aluminidek żelaza
Opis:
Metal alloys with matrix based on an Fe-Al system are generally considered materials for high-temperature applications. Their main advantages are compact crystallographic structure, long-range ordering and structural stability at high temperatures. These materials are based on an intermetallic phase of FeAl or Fe3Al, which is stable in the range from room temperature up to the melting point of 1240°C. Their application at high temperatures is also beneficial because of the low cost of production, very good resistance to oxidation and corrosion, and high mechanical strength. The casting alloy the structure of which includes the FeAl phase is, among others, high-aluminium cast iron. This study has been devoted to the determination of the effect of vanadium and titanium on the transformation of the high-aluminium cast iron structure into an in-situ FeAl-VC composite.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3; 51-54
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shaping optimal zinc coating on the surface of high-quality ductile iron casting. Part II – Technological formula and value of diffusion coefficient
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Powiązania:
https://bibliotekanauki.pl/articles/352224.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot-dip galvanizing
ductile iron
surface roughness
diffusion coefficient
Opis:
The completed research presented in the first part of the article has allowed linking the manufacturing technology of ductile iron castings with the process of hot dip galvanizing. On the basis of these data simulations were carried out to examine the behaviour of zinc diffusion coefficient D in the galvanized coating. The adopted model of zinc coating growth helped to explain the cases of excessive growth of the intermetallic phases in this type of coating. The paper analyzes covered the relationship between the roughness and phase composition of the top layer of product and the thickness and kinetics of zinc coating growth referred to individual sub-layers of the intermetallic phases.Roughness and phase composition in the surface layer of product were next related to the diffusion coefficient D examined in respective sublayers of the intermetallic phases.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 1; 391-395
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shaping optimal zinc coating on the surface of high-quality ductile iron casting. Part I – Moulding technologies vs. zinc coating
Autorzy:
Szczęsny, A.
Kopyciński, D.
Guzik, E.
Powiązania:
https://bibliotekanauki.pl/articles/356585.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot-dip galvanizing
ductile iron
surface roughness
diffusion coefficient
Opis:
Studies have demonstrated that in the process of hot dip galvanizing the decisive influence on the mechanism of zinc coating formation and properties has the quality of the mechanically untreated (raw) surface layer of the galvanized product. The terms “casting surface layer” denote various parameters of the microstructure, including the type of metal matrix, the number of grains and the size of graphite nodules, possible presence of hard spots (the precipitates of eutectic cementite) and parameters of the surface condition. The completed research has allowed linking the manufacturing technology of ductile iron castings with the process of hot dip galvanizing.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 1; 385-390
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase Analysis and Crystallographic Orientation of High Chromium Cast Iron Grain Using EBSD Technique
Autorzy:
Siekaniec, D.
Kopyciński, D.
Powiązania:
https://bibliotekanauki.pl/articles/106961.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
microstructure
crystal orientation
EBSD technique
high chromium cast iron
grain
Opis:
Grain orientation, properties, microstructure borders, and types and sizes of phases have had a major impact on the traits of modern engineering materials. Therefore, it is important to study, analyze, and (further) control the method of crystallizing alloys. One of the methods used to assess the orientation of grain growth is the EBSD technique. EBSD (Electron Backscatter Diffraction Analysis) enables us to perform quantitative analyses on the microstructure of materials (on a scale of millimetres to nanometres) in a scanning electron microscope. Using the EBSD technique can help us gain valuable information about the following properties of crystalline materials: crystal orientation, disorientation, grain boundaries, global and local texture, fractions recrystallization/deformation, stress analysis, characterization of intergranular boundaries, identification of phases, phase distribution, and so on. In this paper, we present the results of phase analysis and crystallographic orientation of the grains of high chromium cast iron via EBSD. These were preliminary studies to determine the possibility of using the EBSD technique for analyzing high chromium cast iron. Castings were produced under industrial conditions, then samples were cut out and testing using the EBSD technique. This method proved to be effective for this type of material.
Źródło:
Journal of Casting & Materials Engineering; 2017, 1, 1; 15-19
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
White Cast Iron with the Microstructure in situ Composite
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Gilewski, R.
Siekaniec, D.
Powiązania:
https://bibliotekanauki.pl/articles/379569.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
white cast iron
high-aluminum cast iron
corrosion resistance
carbides
Al4C3
composites
żeliwo białe
żeliwo wysokoaluminiowe
odporność na korozję
węgliki
kompozyty
Opis:
Alloys based on FeAl intermetallic phases have a heat and corrosion resistance at high temperatures. With the addition of carbon in alloy the carbides appear which makes cast highly resistant to abrasion. However, this material is not widely used because of the presence in the microstructure of the aluminum carbide, which makes the casting disintegrates after a time automatically. The solution to the problem is the decomposition of aluminum carbide and replace it with another carbide forming element. In paper shows that the corresponding elements are titanium, vanadium, bismuth and boron effectively inhibit the process of self-destruction.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1 spec.; 147-150
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Ti, Nb, Cr and B on structure and mechanical properties of high aluminium cast iron
Autorzy:
Kopyciński, D.
Powiązania:
https://bibliotekanauki.pl/articles/383199.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high aluminium cast iron
carbides Al4C3
carbides TiC
intermetallic FeAl
iron aluminides
żeliwo wysokoaluminiowe
węglik AL4C3
węglik TiC
faza międzymetaliczna FeAl
aluminidek żelaza
Opis:
In this work, a method was investigated to eliminate the presence of undesirable Al4C3 phases in a high-aluminium alloys, and thus improve the production process. The melting conditions employed in this work enabled the formation of a Fe-Al-C liquid solution. Moreover, titanium additions into the liquid allowed the precipitation of TiC. According to this reaction, the extent of carbon removal from the melt is strongly influenced by the amount of Ti additions. Hence, proper titanium levels can result in total removal of carbon from the liquid. Notice from this figure that Ti additions above 4.5%, totally eliminate the undesirable Al4C3 precipitates. Making Cr, Ti, B additions reduces size of FeAl alloys grains. In addition, this work indicates that the high-aluminium cast iron posses high oxidation resistance, exceeding that of high-chromium cast iron and chromium cast steels. Finally, the alloy ductility can be enhanced by additions of dopants such as B and Cr. Hence, additions of 0.03% B and 0.03%B-5% Cr combined with a heat treatment were implemented. As a result, the alloy ductility was significantly improved, where the strain of up to 5.3%, (B alone) or 15% (B-Cr) were obtained.
Źródło:
Archives of Foundry Engineering; 2013, 13, 1; 77-80
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Abrasive Wear Resistance of Chromium Cast Iron
Autorzy:
Kopyciński, D.
Piasny, S.
Kawalec, M.
Madizhanova, A.
Powiązania:
https://bibliotekanauki.pl/articles/381907.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
abrasive wear resistance
white cast iron
carbides
odporność na ścieranie
żeliwo białe
węgliki
Opis:
The resistance of cast iron to abrasive wear depends on the metal abrasive hardness ratio. For example, hardness of the structural constituents of the cast iron metal matrix is lower than the hardness of ordinary silica sand. Also cementite, the basic component of unalloyed white cast iron, has hardness lower than the hardness of silica. Some resistance to the abrasive effect of the aforementioned silica sand can provide the chromium white cast iron containing in its structure a large amount of (Cr, Fe)7C3 carbides characterised by hardness higher than the hardness of the silica sand in question. In the present study, it has been anticipated that the white cast iron structure will be changed by changing the type of metal matrix and the type of carbides present in this matrix, which will greatly expand the application area of castings under the harsh operating conditions of abrasive wear. Moreover, the study compares the results of abrasive wear resistance tests performed on the examined types of cast iron. Tests of abrasive wear resistance were carried out on a Miller machine. Samples of standard dimensions were exposed to abrasion in a double to-and-fro movement, sliding against the bottom of a trough filled with an aqueous abrasive mixture containing SiC + distilled water. The obtained results of changes in the sample weight were approximated with a power curve and shown further in the study.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1; 63-66
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetyka wzrostu powłoki ochronnej podczas wysoko- i niskotemperaturowego cynkowania zanurzeniowego odlewów z żeliwa sferoidalnego
Growth kinetics of the protective coating during high- and low- temperature process of hot dip galvanizing of ductile iron castings
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Siekaniec, D.
Powiązania:
https://bibliotekanauki.pl/articles/380840.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cynkowanie zanurzeniowe
żeliwo sferoidalne
temperatura procesu
hot-dip galvanizing
ductile cast iron
process temperature
Opis:
W pracy przedstawiono porównanie mikrostruktury powłoki cynkowej otrzymanej na powierzchni odlewu z żeliwa sferoidalnego gatunku EN-GJS-5007 podczas zabiegu cynkowania zanurzeniowego w procesie „niskotemperaturowym” 450°C oraz „wysokotemperaturowym” 580°C. Zbadano kinetykę wzrostu powłoki cynkowej, zidentyfikowano wzrastające fazy Fe-Zn oraz występowanie wydzieleń „twardego cynku” w powłoce.
The paper presents a comparison of the zinc coating microstructure obtained on EN-GJS-500-7 grade ductile cast iron surface during the hot dip galvanizing in the "low temperature" 450 °C and "high temperature" 580 °C. The kinetics of growth of the zinc coating was investigated. The phases of Fe-Zn and the presence of precipitates "hard zinc" in the coating have been identified.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2 spec.; 47-50
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the Surface Layer of Iron Casting on the Growth of Protective Coating During Hot-Dip Galvanizing
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Powiązania:
https://bibliotekanauki.pl/articles/379701.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hot-dip galvanizing
ductile iron
surface roughness
surface layer
cynkowanie
żeliwo sferoidalne
chropowatość powierzchni
Opis:
The paper presents the results of investigations of the growth of protective coating on the surface of ductile iron casting during the hot-dip galvanizing treatment. Ductile iron of the EN-GJS-600-3 grade was melted and two moulds made by different technologies were poured to obtain castings with different surface roughness parameters. After the determination of surface roughness, the hot-dip galvanizing treatment was carried out. Based on the results of investigations, the effect of casting surface roughness on the kinetics of the zinc coating growth was evaluated. It was found that surface roughness exerts an important effect on the thickness of produced zinc coating.
Źródło:
Archives of Foundry Engineering; 2016, 16, 1; 25-28
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of iron powder and disintegrated steel scrap additives on the solidification of cast iron
Wpływ dodatku proszku żelaza oraz rozdrobnionego złomu stalowego na krystalizację żeliwa
Autorzy:
Kopyciński, D.
Dorula, J.
Powiązania:
https://bibliotekanauki.pl/articles/264035.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
modyfikacja
żeliwo szare
dendryty
struktura
własności mechaniczne
inoculation
cast iron
dendrites
structure
mechanical properties
Opis:
The study proves that by introducing the iron powder and disintegrated steel scrap to low-sulphur cast iron still before the inoculation carried out with a conventional graphitising inoculant, the mechanical properties similar to those obtained during the inoculation treatment carried out on cast iron with the recommended high sulphur content are achieved. The said operation increases the number of crystallisation nuclei for dendrites of the primary austenite. In this case, the iron particles act as substrates for the nucleation of primary austenite gp due to a similar crystallographic behaviour of the regular face centered cubic lattice The more numerous are the dendrites of primary austenite, the less free space is available in the interdendritic spaces for the formation of graphite eutectic grains, which makes the structure more refined (more eutectic grains) and the mechanical properties higher.
W pracy wykazano, że wprowadzenie do żeliwa o niskiej zawartości siarki, jeszcze przed zabiegiem modyfikowania tradycyjnym modyfikatorem grafityzującym, proszku żelaza i/lub złomu stalowego w postaci rozdrobnionej, prowadzi do otrzymania podobnych właściwości wytrzymałościowych jak przy zabiegu modyfikowania dla żeliwa o zalecanej wyższej zawartości siarki. Zabieg ten zwiększa liczbę zarodków krystalizacji dendrytów austenitu pierwotnego. W tym przypadku cząstki żelaza spełniają rolę podkładek do zarodkowania austenitu pierwotnego ϒp wskutek podobieństwa krystalograficznego sieci regularnej (ściennie centrowanej). Im większa liczba dendrytów austenitu pierwotnego, tym mniej miejsca w przestrzeniach międzydendrytycznych na kształtowanie się ziaren eutektyki grafitowej, a w efekcie nieco drobniejsza struktura (większa liczba ziaren eutektycznych) oraz większe wartości właściwości wytrzymałościowych.
Źródło:
Metallurgy and Foundry Engineering; 2010, 36, 2; 97-104
1230-2325
2300-8377
Pojawia się w:
Metallurgy and Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxide Inclusions in Ductile Cast Iron as Starting Materials for Production SiMo Iron Castings
Autorzy:
Dyrlaga, Ł.
Kopyciński, D.
Guzik, E.
Powiązania:
https://bibliotekanauki.pl/articles/2079828.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
oxide inclusions
slag defects
ductile cast iron
structure
wtrącenia tlenkowe
wady żużlu
żeliwo sferoidalne
struktura
Opis:
This paper presents the study about defects found in industrial high silicon ductile iron. The microstructures were analysed using an optical microscope. Afterwards, a scanning electron microscope was used to analyse the chemical composition. The study also examined the origin of oxygen and what is the amount of oxygen in the cast iron. The amount of active oxygen was measured at two production processes. Firstly, at the end of melting process, and secondly, after the nodularization treatment. The research was carried out with different proportions of the raw materials. The focus was on determining the mechanism of the formation of slag defects to eliminate them in order to obtain ductile iron with increased silicon content of the highest possible quality. The research presented in this publication is a part of an implementation doctorate carried out in the METALPOL Foundry in Węgierska Górka (Poland). The presented research concerns the elaboration of initial parameters of liquid metal intended for processing into high-silicon ductile cast iron SiMo1000 type with aluminum and chromium additives.
Źródło:
Archives of Foundry Engineering; 2021, 21, 3; 43-47
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Addition of Titanium on The Structure and Properties of High Chromium Cast Iron
Autorzy:
Kopyciński, D.
Guzik, E.
Siekaniec, D.
Szczęsny, A.
Powiązania:
https://bibliotekanauki.pl/articles/383123.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high chromium cast iron
titanium
bending strength
hardness
microstructure
żeliwo wysokochromowe
tytan
wytrzymałość materiałów
twardość
mikrostruktura
Opis:
The paper presents results of Ti-addition to High Chromium Cast Iron (HCCI) on the structure and selected mechanical properties. For this study casted two sets of cylinders with dimensions ø20 mm, ø15 mm x 250 mm, for the High Chromium Cast Iron (HCCI) and with the 4% by mass Ti-addition. Melts were performed in the induction furnace crucible capacity of 15 kg. During the heats the cup with installed S type thermocouple was poured to record the cooling curves. The cylinders were subjected to the static bending strength test. Samples for the test microstructure and Rockwell hardness were cut from the cylinders. The study shows that the addition of titanium had an impact on the structure and thus the properties of High Chromium Cast Iron (HCCI). In subsequent studies, through an appropriate choice of chemical composition and proper process control, it is planned to obtain in the structure the titanium carbides TiC and chromium carbides with type (Cr, Fe)7C3.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3; 35-38
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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