Autor: Gradoń, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of solidification parameters and macrostructure of IN-713C castings after complex modification
Autorzy:: Binczyk, F.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/379884.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nickel alloy
superalloy
modification
inoculation
solidification
thermal analysis
macrostructure
stop niklu
nadstop
modyfikacja
inokulacja
krzepnięcie
analiza termiczna
makrostruktura
Opis:: The paper presents a research results concerning impact of volume modification (ceramic filter containning cobalt aluminate and hafnium powder) and simultaneous surface and volume modification on solidification and stereological parameters of macrostructure of castings made from post-production scrap of nickel superalloy IN-713C. Research included investigation of the influence of chemical composition on the temperature T_liq i T_sol and evaluation of following macrostructure parameters: the number of grains per mm², average grain area and shape coefficient. Results indicate high influence of carbon content on T_liq. Macrostructure of sample castings indicate positive effect of surface and volume modification, however impact of surface modification is more pronounced.
Źródło:: Archives of Foundry Engineering; 2013, 13, 3; 5-8
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mechanical properties and creep resistance of nickel alloys after complex modification and double filtration
Autorzy:: Binczyk, F.
Gradoń, P.
Mańka, M.
Powiązania:: https://bibliotekanauki.pl/articles/382498.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nadstop niklu
makrostruktura
modyfikacja
filtracja
twardość
odporność na pełzanie
nickel superalloy
macrostructure
modification
filtration
hardness
creep behaviour
Opis:: The paper presents the results of studies to determine the effect of complex surface and bulk modification and double filtration during mould pouring on the stereological parameters of macrostructure and mechanical properties of castings made from the post-production waste IN-713C and the MAR-247 nickel alloys. The evaluation covered the number of grains per 1mm2 of the sample surface area, the average area of grains and the shape index, hardness HB, tensile strength and resistance to high temperature creep. The results indicate the possibility of controlling the stereological parameters of macrostructure through application of several variants of the modification, controlling in this way also different low- and high-temperature properties. The positive effect of double filtration of the alloy during mould pouring on the metallurgical quality and mechanical properties of castings has also been emphasized.
Źródło:: Archives of Foundry Engineering; 2012, 12, 2; 5-8
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Application of Modified Cores for Grain Refinement in Castings of Aircraft Turbine Blades
Autorzy:: Binczyk, F.
Cwajna, J.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/382651.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative casting materials
innovative casting technologies
Nickel alloy IN-713C
surface modification
turbine blades
macrostructure
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
Stop niklu IN-713C
modyfikacja powierzchni
łopatki turbinowe
makrostruktura
Opis:: Paper presents the results of research on modified surface grain refinement method used in investment casting of hollow, thin-walled parts made of nickel based superalloys. In the current technology, the refining inoculant is applied to the surface of the wax pattern and then, it is transferred to the ceramic mould surface during dewaxing. Because of its chemical activity the inoculant may react with the liquid metal which can cause defects on the external surface of the cast part. The method proposed in the paper aims to reduce the risk of external surface defects by applying the grain refiner only to the ceramic core which shapes the internal surface of the hollow casting. In case of thin-walled parts the grain refinement effect is visible throughout the thickness of the walls. The method is meant to be used when internal surface finish is less important, like for example, aircraft engine turbine blades, where the hollowing of the cast is mainly used to lower the weight and aid in cooling during operation.
Źródło:: Archives of Foundry Engineering; 2017, 17, 3; 19-22
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: ATD and DSC Analysis of IN-713C and ZhS6U-VI Superalloys
Autorzy:: Binczyk, F.
Cwajna, J.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/381895.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative casting materials
innovative casting technologies
Nickel superalloys
ATD method
DSC method
solidification parameters
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
stopy niklu
metoda ATD
metoda DSC
parametry krzepnięcia
Opis:: Paper presents the results of ATD and DSC analysis of two superalloys used in casting of aircraft engine parts. The main aim of the research was to obtain the solidification parameters, especially Tsol and Tliq, knowledge of which is important for proper selection of casting and heat treatment parameters. Assessment of the metallurgical quality (presence of impurities) of the feed ingots is also a very important step in production of castings. It was found that some of the feed ingots delivered by the superalloy producers are contaminated by oxides located in shrinkage defects. The ATD analysis allows for quite precise interpretation of first stages of solidification at which solid phases with low values of latent heat of solidification are formed from the liquid. Using DSC analysis it is possible to measure precisely the heat values accompanying the phase changes during cooling and heating which, with knowledge of phase composition, permits to calculate the enthalpy of formation of specific phases like γ or γ′.
Źródło:: Archives of Foundry Engineering; 2017, 17, 1; 13-16
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Ceramic filters for bulk inoculation of nickel alloy castings
Autorzy:: Binczyk, F.
Śleziona, J.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/379709.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nickel superalloy
ceramic filter
CoAl2O4 inoculant
compression strength
nadstop niklu
filtr ceramiczny
inokulant CoAl2O4
wytrzymałość na ściskanie
Opis:: The work includes the results of research on production technology of ceramic filters which, besides the traditional filtering function, play also the role of an inoculant modifying the macrostructure of cast nickel alloys. To play this additional role, filters should demonstrate sufficient compression strength and ensure proper flow rate of liquid alloy. The role of an inoculant is played by cobalt aluminate introduced to the composition of external coating in an amount from 5 to 10 wt.%. The required compression strength (over 1MPa) is provided by the supporting layers, deposited on the preform, which is a polyurethane foam. Based on a two-level fractional experiment 2^4-1, the significance of an impact of various technological parameters (independent variables) on selected functional parameters of the ready filters was determined. Important effect of the number of the supporting layers and sintering temperature of filters after evaporation of polyurethane foam was stated.
Źródło:: Archives of Foundry Engineering; 2011, 11, 3 spec.; 29-32
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The Effect of Temperature on the Result of Complex Modification of IN-713C Superalloy Castings
Autorzy:: Binczyk, F.
Gradoń, P.
Mańka, M.
Findziński, R.
Powiązania:: https://bibliotekanauki.pl/articles/383137.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Innovative casting material
innovative casting technology
nickel alloy IN-713C
modification
cobalt aluminate
macrostructure
innowacyjny materiał odlewniczy
innowacyjna technologia odlewnicza
stop niklu IN-713C
glinek kobaltu
makrostruktura
Opis:: The paper presents the results of research on the determination of the effect of pouring temperature on the macrostructure of the castings subjected to complex (surface and volume) modification and double filtration. Tested castings were made of post-production scrap (gating system parts) of IN-713C superalloy. Tests included the evaluation of the number of grains per 1 mm², mean grain surface area, shape factor and tensile strength. Casting temperature below 1470 °C positively influenced the modification effect. The grains were finer and the mechanical properties increased, especially for castings with thicker walls. On the other hand, manufacture of thin walled castings of high quality require pouring temperature above 1480 °C.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4; 13-16
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Evaluation of Casting Shrinkage and Liquid Metal Fluidity of IN-713C Alloy
Autorzy:: Binczyk, F.
Cieśla, M.
Gradoń, P.
Findziński, A.
Powiązania:: https://bibliotekanauki.pl/articles/380184.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: fluidity
castability
spiral test
pouring temperature
IN713C
superalloy
silumin
płynność
lejność
temperatura odlewania
nadstop
Opis:: This paper presents the results of measurements of liquid metal fluidity and linear shrinkage of nickel alloy IN-713C in vacuum induction melting furnace Balzers VSG-2. Because of limited volume of the furnace chamber special models for technological trials were fluidity of hypoeutectic silumin, however in case of nickel superalloy the mould cavity was completely filled in each test because of high required pouring temperature. Positive results were obtained from the modified spiral test for all alloys used in the research. Relationship between the linear shrinkage for the test rod and a specific indicator of contraction defined on a spiral was observed.
Źródło:: Archives of Foundry Engineering; 2014, 14, 1; 9-12
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The influence of impurities in feed ingots on the quality of castings made from nickel superalloy IN-713C
Autorzy:: Binczyk, F.
Cwajna, J.
Sozańska, M.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/381414.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ATD
superalloy
feed ingot
master heat
solidification
non-metallic inclusion
nadstop
wlewek
krzepnięcie
wtrącenie niemetaliczne
Opis:: The paper presents the results of research on the impact of impurities in the feed ingots (master heat) on the precipitation of impurities in the ATD thermal analysis probe castings. This impurities occur mostly inside shrinkage cavities and in interdendritic space. Additionally, insufficient filtration of liquid alloy during pouring promotes the transfer of impurities into the casting. The technology of melting superalloys in vacuum furnace prevents the removal of slag from the surface of molten metal. Because of that, the effective method of quality assessment of feed ingots in order to evaluate the existence of impurities is needed. The effectiveness of ATD analysis in evaluation of purity of feed ingots was researched. In addition the similarities of non-metallic inclusions in feed ingots and in castings were observed.
Źródło:: Archives of Foundry Engineering; 2013, 13, 4; 5-8
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Impact of a Structure on Durability of Modified Nickel-Base Superalloys in Creep Conditions
Wpływ struktury na trwałość w warunkach pełzania modyfikowanych nadstopów na bazie niklu
Autorzy:: Cieśla, M.
Mańka, M.
Gradoń, P.
Binczyk, F.
Powiązania:: https://bibliotekanauki.pl/articles/356799.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nickel alloys
creep
macrostructure
microstructure
modification
stopy niklu
pełzanie
makrostruktura
mikrostruktura
modyfikacja
Opis:: The study assesses the impact of surface and bulk modification and filtration during pouring on a durability under accelerated creep conditions of casts made of IN-713C and MAR-247 nickel superalloys scrap used for manufacturing of aircraft engine parts. The impact of solutionizing (1185°C/2 h) with subsequent ageing (870°C/20 h) on the creep resistance of a casting made from MAR-247 coarse-grained superalloy was also examined. Morphological structure parameters were determined with the use of Met-Ilo software. Macrostructure analysis of casts showed very significant impact of surface modification treatment. Creep test results clearly showed that coarse grained samples of IN-713C and MAR-247 superalloys have higher creep resistance. Moreover alloy MAR-247 had higher creep durability after heat treatment compared to as-cast state.
W pracy przeprowadzono ocenę wpływu zabiegów modyfikacji powierzchniowej i objętościowej oraz filtracji podczas zalewania form na trwałość w warunkach przyspieszonego pełzania odlewów wykonanych z odpadów poprodukcyjnych nadstopów niklu IN-713C i MAR-247 stosowanych na łopatki turbin silników lotniczych. Analizie poddano również wpływ operacji przesycania (1185°C/20 h) z następnym starzeniem (870°C/20 h) na trwałość pełzaniowa odlewu wytworzonego z stopu MAR-247 o strukturze gruboziarnistej. Badania makrostruktury wykonanych odlewów wykazały bardzo istotny wpływ zabiegu modyfikowania powierzchniowego. Stosując program Met-Ilo określono istotne z punktu widzenia trwałości parametry morfologiczne struktury. Próby pełzania wskazuje, że nadstopy IN-713C i MAR-247 charakteryzujace się wiekszym makroziarnem wykazywały dłuższy czas do zerwania próbki. Ponadto próbki stopu MAR-247 poddane obróbce cieplnej wykazują większą odporność na pełzanie niż próbki w stanie lanym.
Źródło:: Archives of Metallurgy and Materials; 2014, 59, 4; 1559-1563
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Evaluation of metallurgical quality of master heat IN-713C nickel alloy ingots
Autorzy:: Binczyk, F.
Cwajna, J.
Roskosz, S.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/380351.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: analiza termiczna (ATD)
nadstop niklu
krzepnięcie odlewu
wtrącenia niemetaliczne
ATD thermal analysis
nickel superalloy
master heat ingot
solidification
non-metallic inclusions
Opis:: The paper presents the results of evaluation of the metallurgical quality of master heat ingots and of the identification of non-metallic inclusions (oxides of Al., Zr, Hf, Cr, etc.), which have been found in the shrinkage cavities formed in these ingots. The inclusions penetrate into the liquid alloy, and on pouring of mould are transferred to the casting, especially when the filtering system is not sufficiently effective. The specific nature of the melting process of nickel and cobalt alloys, carried out in vacuum induction furnaces, excludes the possibility of alloy refining and slag removal from the melt surface. Therefore, to improve the quality of castings (parts of aircraft engines), it is so important to evaluate the quality of ingots before charging them into the crucible of an induction furnace. It has been proved that one of the methods for rapid quality evaluation is an ATD analysis of the sample solidification process, where samples are taken from different areas of the master heat ingot. The evaluation is based on a set of parameters plotted on the graph of the dT/dt derivative curve during the last stage of the solidification process in a range from TEut to Tsol.
Źródło:: Archives of Foundry Engineering; 2012, 12, 4; 5-10
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Influence of Modification and Casting Technology on Structure of IN-713C Superalloy Castings
Autorzy:: Binczyk, F.
Cwajna, J.
Gradoń, P.
Mańka, M.
Powiązania:: https://bibliotekanauki.pl/articles/381572.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative casting materials
innovative casting technologies
nickel alloy IN-713C
modification
cobalt aluminate
macrostructure
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
stop niklu
modyfikacja
kobalt
makrostruktura
Opis:: The paper presents the results concerning impact of modification (volume and surface techniques), pouring temperature and mould temperature on stereological parameters of macrostructure in IN713C castings made using post-production scrap. The ability to adjust the grain size is one of the main issues in the manufacturing of different nickel superalloy castings used in aircraft engines. By increasing the grain size one can increase the mechanical properties, like diffusion creep resistance, in higher temperatures. The fine grained castings. on the other hand, have higher mechanical properties in lower temperatures and higher resistance to thermal fatigue. The test moulds used in this study, supplied by Pratt and Whitney Rzeszow, are ordinarily used to cast the samples for tensile stress testing. Volume modification was carried out using the patented filter containing cobalt aluminate. The macrostructure was described using the number of grains per mm², mean grain surface area and shape index. Obtained results show strong relationship between the modification technique, pouring temperature and grain size. There was no significant impact of mould temperature on macrostructure.
Źródło:: Archives of Foundry Engineering; 2016, 16, 3; 11-14
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Creep Behaviour of Modified Mar-247 Superalloy
Autorzy:: Cieśla, M.
Mańka, M.
Binczyk, F.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/354216.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nickel superalloys
creep
macrostructure
microstructre
Opis:: The paper presents the results of analysis of creep behaviour in short term creep tests of cast MAR-247 nickel-based superalloy samples made using various modification techniques and heat treatment. The accelerated creep tests were performed under temperature of 982 °C and the axial stresses of σ = 150 MPa (variant I) and 200 MPa (variant II). The creep behaviour was analysed based on: creep durability (creep rupture life), steady-state creep rate and morphological parameters of macro- and microstructure. It was observed that the grain size determines the creep durability in case of test conditions used in variant I, durability of coarse-grained samples was significantly higher.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 2A; 701-704
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Durability of MAR-247 and IN-713C Nickel Superalloys under Cyclic Creep Conditions
Autorzy:: Cieśla, M.
Binczyk, F.
Junak, G.
Mańka, M.
Gradoń, P.
Powiązania:: https://bibliotekanauki.pl/articles/380030.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nickel superalloy
macrostructure modification
heat treatment
low-cycle fatigue
cyclic creep
nadstop niklu
modyfikacja makrostruktury
obróbka cieplna
zmęczenie niskocyklowe
pełzanie cykliczne
Opis:: Paper presents the assessment of impact of heat treatment on durability in low-cycle fatigue conditions (under constant load) in castings made using post-production scrap of MAR-247 and IN-713C superalloys. Castings were obtained using modification and filtration methods. Additionally, casting made of MAR-247 were subjected to heat treatment consisting of solution treatment and subsequent aging. During low-cycle fatigue test the cyclic creep process were observed. It was demonstrated that the fine-grained samples have significantly higher durability in test conditions and , at the same time, lower values of plastic deformation to rupture Δ□_pl. It has been also proven that durability of fine-grained MAR-247 samples can be further raised by about 60% using aforementioned heat treatment.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4; 17-20
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Surface Modification of Cored, Thin Walled Castings of Nickel Superalloy IN-713C
Autorzy:: Binczyk, F.
Cwajna, J.
Gradoń, P.
Mańka, M.
Findziński, R.
Powiązania:: https://bibliotekanauki.pl/articles/381063.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Innovative casting material
innovative casting technology
nickel alloy IN-713C
surface modification
cobalt aluminate
macrostructure
innowacyjny materiał odlewniczy
innowacyjna technologia odlewnicza
stop niklu IN-713C
modyfikacja powierzchni
glinek kobaltu
makrostruktura
Opis:: In current casting technology of cored, thin walled castings, the modifying coating is applied on the surface of wax pattern and, after the removal of the wax, is transferred to inner mould surface. This way the modification leading to grain refinement occur on the surface of the casting. In thin walled castings the modification effect can also be seen on the other (external) side of the casting. Proper reproduction of details in thin walled castings require high pouring temperature which intensify the chemical reactions on the mould – molten metal interface. This may lead to degradation of the surface of the castings. The core modification process is thought to circumvent this problem. The modifying coating is applied to the surface of the core. The degradation of internal surface of the casting is less relevant. The most important factor in this technology is “trough” modification – obtaining fine grained structure on the surface opposite to the surface reproduced by the core.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3; 17-20
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Evaluation of Heat Capacity and Resistance to Cyclic Oxidation of Nickel Superalloys
Autorzy:: Przeliorz, R.
Binczyk, F.
Gradoń, P.
Góral, M.
Mikuszewski, T.
Powiązania:: https://bibliotekanauki.pl/articles/381534.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: foundry technology
nickel superalloys
heat resistance
DSC calorimeter
heat capacity
technologie odlewnicze
nadstop niklu
odporność na ciepło
DSC kalorymetru
pojemność cieplna
Opis:: Paper presents the results of evaluation of heat resistance and specific heat capacity of MAR-M-200, MAR-M-247 and Rene 80 nickel superalloys. Heat resistance was evaluated using cyclic method. Every cycle included heating in 1100°C for 23 hours and cooling for 1hour in air. Microstructure of the scale was observed using electron microscope. Specific heat capacity was measured using DSC calorimeter. It was found that under conditions of cyclically changing temperature alloy MAR-M-247 exhibits highest heat resistance. Formed oxide scale is heterophasic mixture of alloying elements, under which an internal oxidation zone was present. MAR-M-200 alloy has higher specific heat capacity compared to MAR-M-247. For tested alloys in the temperature range from 550°C to 800°C precipitation processes (γ′, γ′′) are probably occurring, resulting in a sudden increase in the observed heat capacity.
Źródło:: Archives of Foundry Engineering; 2014, 14, 3; 67-70
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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