Temat: nadstop - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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: 2.

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: 3.

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: 4.

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: 5.

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: 6.

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: 7.

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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Skocz do pozycji: 8.

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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