Temat: alloy - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fatigue Properties of AlSi7Mg Alloy with Diversified Microstructure
Autorzy:: Tupaj, M.
Orłowicz, A. W.
Mróz, M.
Trytek, A.
Powiązania:: https://bibliotekanauki.pl/articles/380962.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: AlSi7Mg03 alloy
alloy refining
alloy modification
cooling rate
microstructure parameter
fatigue strength
stop AlSi7Mg03
rafinacja stopu
modyfikacja stopu
szybkość chłodzenia
parametr mikrostrukturalny
wytrzymałość zmęczeniowa
Opis:: The paper discusses the effect of microstructure on the fatigue strength of AlSi7Mg casting alloy refined conventionally with hexachloroethane without modifying and modified with TiB and Na. Castings made of both alloy variants were subjected to T6 heat treatment. It turned out that the applied refining secured satisfactory compactness of the material. In view of absence of gas and shrinkage porosity in the castings, short cracks nucleated on largest silicon precipitates and largest intermetallic phase precipitations as these were the locations where stress concentrations reached their highest values. Comprehensive modification of the alloy resulted in reduction of the value of SDAS parameter characterizing α(Al) phase dendrites, a decrease of the distance between silicone precipitates in the eutectic λ_E, and a decrease of the maximum size of silicone precipitates l_maxSi. The ultimate effect of these changes was an increase of the fatigue strength.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3 spec.; 87-90
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Combustion Engine Cylinder Liners Made of Al-Si Alloys
Autorzy:: Orłowicz, A. W.
Tupaj, M.
Mróz, M.
Trytek, A.
Powiązania:: https://bibliotekanauki.pl/articles/382953.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: combustion engine
cylinder liner
Al-Si alloy
silnik spalinowy
tuleja cylindrowa
stop Al-Si
Opis:: The paper deals with problems related to application of aluminum-silicon alloys for combustion engine cylinder liners.
Źródło:: Archives of Foundry Engineering; 2015, 15, 2; 71-74
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Improvement of Al-Si Alloy Fatigue Strength by Means of Refining and Modification
Autorzy:: Tupaj, M.
Orłowicz, A. W.
Trytek, A.
Mróz, M.
Powiązania:: https://bibliotekanauki.pl/articles/379844.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Al-Si alloy
fatigue limit
refining
modification
stop Al-Si
granica zmęczenia
rafinacja
modyfikacja
Opis:: The paper presents results of a study concerning an AlSi7Mg alloy and the effect of subjecting the liquid metal to four different processes: conventional refining with hexachloroethane; the same refining followed by modification with titanium, boron, and sodium; refining by purging with argon carried out in parallel with modification with titanium and boron salts and strontium; and parallel refining with argon and modification with titanium, boron, and sodium salts. The effect of these four processes on compactness of the material, parameters of microstructure, and fatigue strength of AlSi7Mg alloy after heat treatment. It has been found that the highest compactness (the lowest porosity ratio value) and the most favorable values of the examined parameters of microstructure were demonstrated by the alloy obtained with the use of the process including parallel purging with argon and modification with salts of titanium, boron, and sodium. It has been found that in the fatigue cracking process observed in all the four variants of the liquid metal treatment, the crucial role in initiation of fatigue cracks was played by porosity. Application of the process consisting in refining by purging with argon parallel to modification with Ti, B, and Na salts allowed to refine the microstructure and reduce significantly porosity of the alloy extending thus the time of initiation and propagation of fatigue cracks. The ultimate effect consisted in a distinct increase of the fatigue limit value.
Źródło:: Archives of Foundry Engineering; 2019, 4; 61-66
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Stress rupture test of MAR-M509 alloy with structure refined by rapid resolidification
Autorzy:: Mróz, M.
Orłowicz, W.
Tupaj, M.
Trytek, A.
Powiązania:: https://bibliotekanauki.pl/articles/380450.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: stop MAR M509
mikrostruktura
MAR-M509 alloy
rapid resolidification
microstructure
stress rupture test
Opis:: This study presents results of stress rupture test of MAR-M-509 cobalt alloy samples, as-cast and after surface refining with a concentrated stream of heat. Tests were conducted on samples of MAR-M-509 alloy castings, obtained using the lost-wax method. Casting structure refining was performed with the GTAW method in argon atmosphere, using the current I = 200 A and electrical arc scanning velocity vs = 100, 150, 200 and 250 mm/min. The effect of rapid resolidification of the MAR-M-509 alloy on the microstructure was examined and significant improvement in stress rupture test was observed.
Źródło:: Archives of Foundry Engineering; 2012, 12, 4; 117-120
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Stress-rupture Tests of MAR-M-509 Cobalt Alloy Improved by Rapid Solidification
Autorzy:: Mróz, M.
Orłowicz, W.
Tupaj, M.
Powiązania:: https://bibliotekanauki.pl/articles/380367.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MAR-M509 cobalt alloy
rapid solidification
stress rupture test
stop kobaltu MAR-M509
krystalizacja szybka
Opis:: In the paper, results of stress-rupture test applied to MAR-M-509 cobalt alloy specimens, in as-cast condition and with microstructure shaped under rapid solidification conditions are presented. The material for the study were castings of MAR-M509 alloy obtained by means of the investment casting method. The rapid solidification conditions were obtained by means of remelting process carried out with the use of GTAW method. The effect of rapid solidification following the remelting process is a refinement of microstructure in castings of MAR-M509 alloy and significant extension of the time to rupture in stress-rupture test.
Źródło:: Archives of Foundry Engineering; 2013, 13, 1 spec.; 117-120
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 Refining and the Cooling Rate on Microstructure and Mechanical Properties of AlSi7Mg Alloy
Autorzy:: Tupaj, M.
Orłowicz, A. W.
Mróz, M.
Trytek, A.
Powiązania:: https://bibliotekanauki.pl/articles/381386.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: AlSi7Mg alloy
material compactness
microstructure parameter
mechanical properties
stop AlSi7Mg
zwięzłość materiału
właściwości mechaniczne
Opis:: The paper presents results of research on the effect of conventional refining with hexachloroethane and the cooling rate v_cool. ranging within the solidification temperature regime from 12.5°C/min to 94.5°C/min on compactness of the material, values of microstructure parameters λ_2D, λ_E, l_maxSi, and mechanical properties R_m, R_0,2, A₅ of unmodified AlSi7Mg alloy after heat treatment (solution treatment 540°C/6 h/water 20°C and aging 175°C/8 h/air). It has been found that as a result of refining and increased cooling rate, an improvement of material compactness occurred (reduction of the density index by 0.4%) accompanied by a decrease of values of parameters characterizing the microstructure: λ_2D by 54.4 μm; λ_E by 4,6 μm; and l_maxSi by 50 μm. As a result of these changes, the value of R_m increased by about 40 MPa and R_0.2 improved by about 36 MPa, while the value of A₅ decreased by 1.3%.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3 spec.; 83-86
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The Effect of Cooling Rate on Properties of Intermetallic Phase in a Complex Al-Si Alloy
Autorzy:: Tupaj, M.
Orłowicz, A. W.
Mróz, M.
Trytek, A.
Markowska, O.
Powiązania:: https://bibliotekanauki.pl/articles/380384.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: alloy Al-Si
intermetallic phase
cooling rate
silicon crystals
stop Al-Si
faza międzymetaliczna
szybkość chłodzenia
kryształy krzemu
Opis:: The cooling rate is one of the main tools available to the process engineer by means of which it is possible to influence the crystallisation process. Imposing a desired microstructure on a casting as early as in the casting solidification phase widens significantly the scope of technological options at disposal in the process of aluminium-silicon alloy parts design and application. By changing the cooling rate it is possible to influence the course of the crystallisation process and thus also the material properties of individual microstructure components. In the study reported in this paper it has been found that the increase of cooling rate within the range of solidification temperatures of a complex aluminium-silicon alloy resulted in a decrease of values of the instrumented indentation hardness (HIT) and the instrumented indentation elastic modulus (EIT) characterising the intermetallic phase occurring in the form of polygons, rich in aluminium, iron, silicon, manganese, and chromium, containing also copper, nickel, and vanadium. Increased cooling rate resulted in supersaturation of the matrix with alloying elements.
Źródło:: Archives of Foundry Engineering; 2016, 16, 3; 125-128
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 Effect of the Heat Flux Density on Microstructure of Surface Remeltings on C355 Alloy Castings
Autorzy:: Orłowicz, A. W.
Mróz, M.
Tupaj, M.
Trytek, A.
Jacek, M.
Radoń, M.
Powiązania:: https://bibliotekanauki.pl/articles/382629.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: C355 alloy
surface remelting
concentrated heat stream
surface microstructure
stop C355
utwardzanie powierzchniowe
strumień ciepła
mikrostruktura powierzchni
Opis:: The paper presents results of a study on the effect of the flux density of heat carried away for the remelting area to substrate in the course of surface remelting with concentrated heat stream on values of structural parameters λ_1D and λ_2D of α(Al) phase dendrites in C355 alloy. The remeltings were made with the use of GTAW method, at arc current intensity I = 200 A and concentrated heat stream scanning speed v_s = 200, 400, 600, and 800 mm/min. The used protective gas was argon supplied at rate of 20 l/min. It has been found that the increase of the rate of scanning with concentrated heat stream results in a change of the remelting-substrate separation surface shape consisting in reduction of the remelting width and depth. This increases the value of the flux density of heat transmitted from the remelting area to substrate which in turn acts in favor of reduction of structural parameters λ_1D and λ_2D characterizing α(Al) phase dendrites in C355 alloy.
Źródło:: Archives of Foundry Engineering; 2018, 18, 2; 35-38
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Partially Melted Zone in Mg-Al Type Alloy After Gas-tungsten Arc Welding
Autorzy:: Braszczyńska-Malik, K. N.
Przełożyńska, E.
Mróz, M.
Powiązania:: https://bibliotekanauki.pl/articles/381760.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Mg-Al-Zn alloy
gas tungsten arc welding
partially melted zone
stop Mg-Al-Zn
spawanie łukowe
strefa przetopienia
Opis:: The gas-tungsten arc (GTA) welding behaviors of the commercial AZ91 magnesium alloy were examined in terms of microstructure characteristics. This study focused on the effects of the GTAW process parameters (like welding current, welding speed and method of additional cooling of the welded samples) on the size of the fusion zone (FZ) and partially melted zone (PMZ). The PMZ morphology of the eutectic regions changed from less to more divorced in the direction from the FZ to the base metal. The largest PMZ was obtained at a low welding speed (3.33 mm/s) and without additional water cooling of the samples.
Źródło:: Archives of Foundry Engineering; 2013, 13, 2 spec.; 18-21
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Cavitation Erosion of Nodular Cast Iron - Microstructural Effects
Autorzy:: Orłowicz, A. W.
Mróz, M.
Tupaj, M.
Trytek, A.
Jacek, M.
Radoń, M.
Powiązania:: https://bibliotekanauki.pl/articles/379634.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: wear resistant alloy
nodular cast iron
cavitation erosion
distilled water
stop odporny na ścieranie
żeliwo sferoidalne
erozja kawitacyjna
woda destylowana
Opis:: The paper deals with susceptibility of nodular cast iron with ferritic-pearlitic matrix on cavitation erosion. Cavitation tests were carried out with the use of a cavitation erosion vibratory apparatus employing a vibration exciter operated at frequency of 20 kHz. The study allowed to determine the sequence of subsequent stages in which microstructure of cast iron in superficial regions is subject to degradation. The first features to be damaged are graphite precipitates. The ferritic matrix of the alloy turned out to be definitely less resistant to cavitation erosion compared to the pearlitic matrix component.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 119-122
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Structure of MMCs with SiC Particles after Gas-tungsten Arc Welding
Autorzy:: Przełożyńska, E.
Braszczyńska-Malik, K. N.
Mróz, M.
Powiązania:: https://bibliotekanauki.pl/articles/379546.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: magnesium matrix composite
gas tungsten arc welding
Mg-Al-Mn alloy
SiC particle
microstructure
kompozyt magnezowy
spawanie łukowe
stop Mg-Al-Mn
cząstka SiC
mikrostruktura
Opis:: The gas-tungsten arc (GTA) welding behaviors of a magnesium matrix composite reinforced with SiC particles were examined in terms of microstructure characteristics and process efficiencies. This study focused on the effects of the GTAW process parameters (like welding current in the range of 100/200 A) on the size of the fusion zone (FZ). The analyses revealed the strong influence of the GTA welding process on the width and depth of the fusion zone and also on the refinement of the microstructure in the fusion zone. Additionally, the results of dendrite arm size (DAS) measurements were presented.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4; 65-68
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Geometry of remeltings and efficiency of the surface remelting process applied to cobalt alloy castings
Autorzy:: Mróz, M.
Orłowicz, W.
Tupaj, M.
Powiązania:: https://bibliotekanauki.pl/articles/381741.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MAR-M509 alloy
surface remelting
remelting geometry
thermal efficiency
melting efficiency
stop MAR M509
przetapianie powierzchniowe
geometria przetopienia
sprawność cieplna
efektywność topienia
Opis:: The paper summarises results of measurements of remelting area geometry, thermal efficiency and melting efficiency characterising the surface remelting process applied to castings of MAR-M-509 cobalt alloy. The remelting process was carried out with the use of GTAW (Gas Tungsten Arc Welding) method in protective atmosphere of helium, at the electric current intensity in the range from 100 A to 300 A, and the electric arc scanning velocity v_s in the range from 200 mm/min to 800 mm/min. The effect of current intensity and electric arc scanning velocity on geometrical parameters of remeltings, thermal efficiency, and melting efficiency characterising the remelting process has been determined.
Źródło:: Archives of Foundry Engineering; 2013, 13, 2; 95-98
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Usable Properties of AlSi7Mg Alloy after Sodium or Strontium Modification
Autorzy:: Tupaj, M.
Orłowicz, A. W.
Mróz, M.
Trytek, M.
Markowska, O.
Powiązania:: https://bibliotekanauki.pl/articles/381773.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: alloy AlSi7Mg
refining
modification
cooling rate
microstructural parameters
usable properties
stop AlSi7Mg
rafinacja
modyfikacja
szybkość chłodzenia
parametry mikrostruktury
właściwości użytkowe
Opis:: The paper deals with the effect of microstructure diversified by means of variable cooling rate on service properties of AlSi7Mg cast alloy refined traditionally with Dursalit EG 281, grain refining with titanium-boron and modified with sodium and a variant of the same alloy barbotage-refined with argon and simultaneously grain refining with titanium-boron and modified with strontium. For both alloy variants, the castings were subject to T6 thermal treatment (solution heat treatment and artificial aging). It turned out that AlSi7Mg alloy after simultaneous barbotage refining with argon and grain refining with titanium-boron and modified with strontium was characterised with lower values of representative microstructure parameters (SDAS – secondary dendrite arm spacing, λE, lmax) and lower value of the porosity ratio compared to the alloy refined traditionally with Dursalit EG 281 and grain refining with titanium-boron and modified with sodium. The higher values of mechanical properties and fatigue strength parameters were obtained for the alloy simultaneously barbotage-refined with argon and grain refining with titanium-boron and modified with strontium.
Źródło:: Archives of Foundry Engineering; 2016, 16, 3; 129-132
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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