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Tytuł:
Mechanical properties and microstructure of AlSi10Mg alloy obtained by casting and SLM technique
Autorzy:
Zyguła, Krystian
Nosek, Bartłomiej
Pasiowiec, Hubert
Szysiak, Norbert
Powiązania:
https://bibliotekanauki.pl/articles/1177412.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
AlSi10Mg
SLM - selective laser melting
aluminium alloy
heat treatment
mechanical properties
microstructure
Opis:
Selective laser melting (SLM) techniques are gaining popularity recently. Due to increasing requirements of the manufacturing industry regarding cost production reduction, methods based on additive manufacturing (AM) are more and more attractive. SLM method allows fabricating parts with minimum post-processing machining requirements. Considering the above, this technique is applied mainly in aviation, automotive industry and medicine. Manufacturing parts by SLM method demands strictly defined parameters in particular when using aluminium alloys, due to high risk of porosity. The aim of research was to evaluate the possibility of replacing traditional casting of small-lot details by novel SLM method in specified manufacturing conditions. This study contains comparison of chosen physical and mechanical properties of AlSi10Mg alloy obtained by SLM method and by casting. As-received as well as heat treated (T6 heat treatment) materials were examined. Both types of the billets were subjected to hardness, tensile and Charpy impact tests, before and after T6 heat treatment. For SLM material relative density was also specified. Microstructure of cast and SLM samples was analyzed using light microscopy. The results of the research lead to conclusion, that the key aspect is the appropriate selection of parameters of manufacturing of the parts by SLM method.
Źródło:
World Scientific News; 2018, 104; 456-466
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Iron in AlSi10MgMn Alloy
Autorzy:
Žihalová, M.
Bolibruchová, D.
Powiązania:
https://bibliotekanauki.pl/articles/382235.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alloy AlSi10MgMn
intermetallic phase
bronze
stop AlSi10MgMn
faza międzymetaliczna
brąz
Opis:
Presence of iron in Al-Si cast alloys is common problem mainly in secondary (recycled) aluminium alloys. Better understanding of iron influence in this kind of alloys can lead to reduction of final castings cost. Presented article deals with examination of detrimental iron effect in AlSi10MgMn cast alloy. Microstructural analysis and ultimate tensile strength testing were used to consider influence of iron to microstructure and mechanical properties of selected alloy.
Źródło:
Archives of Foundry Engineering; 2014, 14, 4; 109-112
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-Hardening AlZn10Si8Mg Aluminium Alloy as an Alternative Replacement for AlSi7Mg0.3 Aluminium Alloy
Autorzy:
Vicent, M.
Fabian, P.
Tillova, E.
Powiązania:
https://bibliotekanauki.pl/articles/381802.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
secondary AlSi7Mg0.3 alloy
alloy AlZn10Si8Mg
heat treatment
self-hardening
stop wtórny
stop AlZnSiMg
obróbka cieplna
samoutwardzanie
Opis:
This article deals with the fatigue properties of newly used AlZn10Si8Mg aluminium alloy where the main aim was to determine the fatigue strength and compare it with the fatigue strength of AlSi7Mg0.3 secondary aluminium alloys which is used in the automotive industry for cyclically loaded components. AlZn10Si8Mg aluminium alloy, also called UNIFONT 90, is self-hardening (without heat treatments), which contributes to economic efficiency. This is one of the main reasons why is compared, and may be an alternative replacement for AlSi7Mg0.3 alloy which is heat treated to achieve required mechanical properties. The experiment results show that the fatigue properties of AlZn10Si8Mg alloy are comparable, if not better, than AlSi7Mg0.3 alloy. Fatigue properties of AlZn10Si8Mg alloy are achieved after seven days of natural ageing, immediately after casting and achieving value of fatigue strength is caused by structural components formed during solidification of the melt.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 139-142
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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 λE, and a decrease of the maximum size of silicone precipitates lmaxSi. 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
Artykuł
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 vcool. 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 λ2D, λE, lmaxSi, and mechanical properties Rm, R0,2, 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: λ2D by 54.4 μm; λE by 4,6 μm; and lmaxSi by 50 μm. As a result of these changes, the value of Rm increased by about 40 MPa and R0.2 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
Artykuł
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
Artykuł
Tytuł:
Study on Chip Breakability Index During Longitudinal Turning of Cast and DMLS Additively Manufactured AlSi10Mg Aluminum Alloy
Autorzy:
Struzikiewicz, Grzegorz
Słodki, Bogdan
Zębala, Wojciech
Franczyk, Emilia
Powiązania:
https://bibliotekanauki.pl/articles/2022248.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
machining
turning
AlSi10Mg aluminum alloy
additive manufacturing
DMLS
chip breakability
Opis:
The article presents selected issues related to the process of turning samples made of the AlSi10Mg alloy with the use of various manufacturing technologies, i.e. casting and DMLS (Direct Metal Laser Sintering). Machining processes of cylindrical surfaces of samples made with these two methods were subjected to a comparative analysis. The main idea behind the research was to develop guidelines for turning parts obtained using laser powder sintering. Study on the influence of cutting parameters on the value of breakability index Cin. as well as the type, shape and form of chips produced during longitudinal turning is presented. The chips were also measured and the results of the microscopic analysis of the chips form are described. Results showed that the values of Cin index for turning of the cast AlSi10MG alloy depend mainly on the value of feed f. According to adopted chip classification for the feed value of f > 0.1 mm/rev the chips had a favorable, short form. In the case of turning the sample obtained by the DMLS method, the values of the chip breakability index Cin are not significantly dependent on the adopted ranges of cutting parameters. The Taguchi method was used to develop the conclusions obtained on the basis of the research results.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 1; 28-35
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of strain rate and temperature on the mechanical behaviour of additively manufactured AlSi10Mg alloy – experiment and the phenomenological constitutive modelling
Autorzy:
Stanczak, Magda
Rusinek, Alexis
Broniszewska, Paula
Fras, Teresa
Pawłowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2173665.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AlSi10Mg aluminum alloy
additive manufacturing
DMLS method
direct metal laser sintering
compression
SHPB experiment
constitutive model
stop aluminium AlSi10Mg
produkcja dodatkowa
metoda DMLS
bezpośrednie spiekanie laserowe metali
kompresja
eksperyment SHPB
model konstytutywny
Opis:
The paper is related to the material behaviour of additively manufactured samples obtained by the direct metal laser sintering (DMLS) method from the AlSi10Mg powder. The specimens are subjected to a quasi-static and dynamic compressive loading in a wide range of strain rates and temperatures to investigate the influence of the manufacturing process conditions on the material mechanical properties. For completeness, an analysis of their deformed microstructure is also performed. The obtained results prove the complexity of the material behaviour; therefore, a phenomenological model based on the modified Johnson–Cook approach is proposed. The developed model describes the material behaviour with much better accuracy than the classical constitutive function. The resulted experimental testing and its modelling present the potential of the discussed material and the manufacturing technology.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 4; art. no. e141983
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of porosity in Al alloy die castings
Autorzy:
Říhová, M.
Cech, J.
Havlíčková, J.
Powiązania:
https://bibliotekanauki.pl/articles/382450.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stop AlSi9Cu3
odlewnictwo
kadłub silnika
porowatość
wielkość mechaniczna
symulacja
AlSi9Cu3 alloy
casting
engine block
porosity
mechanical values
simulation
Opis:
Mechanical properties of an Al-alloy die casting depend significantly on its structural properties. Porosity in Al-alloy castings is one of the most frequent causes of waste castings. Gas pores are responsible for impaired mechanical-technological properties of cast materials. On the basis of a complex evaluation of experiments conducted on AlSi9Cu3 alloy samples taken from the upper engine block which was die-cast with and without local squeeze casting it can be said that castings manufactured without squeeze casting exhibit maximum porosity in the longitudinal section. The area without local squeeze casting exhibits a certain reduction in mechanical properties and porosity increased to as much as 5%. However, this still meets the norms set by SKODA AUTO a.s.
Źródło:
Archives of Foundry Engineering; 2012, 12, 1; 93-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Nickel Addition on Properties of Secondary AlSi7Mg0.3 Alloy
Autorzy:
Richtárech, L.
Bolibruchová, D.
Brůna, M.
Caiss, J.
Powiązania:
https://bibliotekanauki.pl/articles/379900.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
secondary AlSi7Mg0.3 alloy
iron phases
thermal analysis
iron correctors
stop AlSi7Mg0,3
faza żelazowa
analiza termiczna
usuwanie żelaza
Opis:
This paper deals with influence on segregation of iron based phases on the secondary alloy AlSi7Mg0.3 microstructure by nickel. Iron is the most common and harmful impurity in aluminum casting alloys and has long been associated with an increase of casting defects. In generally, iron is associated with the formation of Fe-rich intermetallic phases. It is impossible to remove iron from melt by standard operations. Some elements eliminates iron by changing iron intermetallic phase morphology, decreasing its extent and by improving alloy properties. Realization of experiments and results of analysis show new view on solubility of iron based phases during melt preparation with higher iron content and influence of nickel as iron corrector of iron based phases.
Źródło:
Archives of Foundry Engineering; 2015, 15, 2; 95-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Age Hardening Parameters on the Microstructure and Properties of the AlSi7Mg Sand Cast Alloy
Wpływ parametrów utwardzania wydzieleniowego na strukturę i właściwości stopu AlSi7Mg
Autorzy:
Poloczek, Ł.
Dybowski, B.
Rodak, K.
Jarosz, R.
Kiełbus, A.
Powiązania:
https://bibliotekanauki.pl/articles/352479.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AlSi7Mg alloy
sand casting
microstructure
electrical conductivity
hardness
heat treatment
AlSi7Mg
mikrostruktura
przewodność elektryczna
twardość
obróbka cieplna
Opis:
Aluminium alloys are characterized by a low density, acceptable mechanical properties and good technological properties. This unique connection of features made aluminium alloys perfect structural material for the transportation industry. Also, due to their good electrical conductivity they also found application in energy production industry. High mechanical properties and electrical conductivity of the Al-Si alloys with Mg addition may be achieved by heat treatment. However, the highest mechanical properties are achieved in the early stages of age hardening - due to precipitation of coherent phases, while high electrical conductivity may be achieved only by prolonged aging, during precipitation of semi-coherent or fully noncoherent, coarse phases. Carefully heat treated AlSi7Mg alloy may exhibit both fairly high electrical conductivity and slightly increased mechanical properties. The following article present results of the research of influence of heat treatment on the properties and microstructure of sand cast AlSi7Mg alloy. Microstructure observations were performed using light microscopy, scanning electron and scanning-transmission electron microscopy. Hardness and electrical conductivity of the AlSi7Mg alloy were investigated both in as-cast condition and after heat treatment. Maximum hardness of the alloy is achieved after solutioning at 540°C for 8h, followed by 72h of aging at 150°C, while maximal electrical conductivity after solutioning at 540°C for 48h, followed by 96h of aging at 180°C. Increase of the electrical conductivity is attributed to increasing distance between Si crystals and precipitation of semi coherent phases.
Stopy aluminium charakteryzują się małą gęstością, dobrymi właściwościami mechanicznymi, a przy tym bardzo dobrymi właściwościami odlewniczymi. Połączenie tych cech powoduje że stopy te znajdują szerokie zastosowanie w przemyśle motoryzacyjnym. Ich dużą zaletą jest również wysoka przewodność elektryczna oraz cieplna, dzięki której znajdują również zastosowanie w przemyśle energetycznym. Uzyskanie tak wysokich właściwości mechanicznych i przewodności elektrycznej w przypadku stopów Al-Si z dodatkiem Mg może być osiągnięte tylko poprzez przeprowadzenie obróbki cieplenj. Najwyższe właściwości mechaniczne są osiągane w początkowej fazie utwardzania wydzieleniowego (wydzielanie się koherentnych faz), podczas gdy uzyskanie wysokich wartości przewodności może być osiągnięte tylko przez długotrwałe starzenie, podczas wydzielania się pół koherentnych lub niekoherentnych, dużych faz. W przypadku stopu AlSi7Mg, starannie dobrana obróbka cieplna może powodować znaczne podwyższenie przewodności oraz polepszenie właściwości mechanicznych. Ninjiejszy artykuł przedstawia wyniki badań wpływu parametrów obróbki cieplnej na strukturę i właściwości stopu AlSi7Mg, odlanego grawitacyjnie do form piaskowych. Obserwacje mikrostruktury prowadzone były prz użyciu metod mikroskopii świetlnej, elektronowej mikroskopii skaningowej oraz elektronowej mikroskopii transmisyjnej. Twardość i przewodności stopu AlSi7Mg badano zarówno w stanie lanym, jak i po obróbce cieplnej. Maksymalną twardość stopu uzyskano po przesycaniu w 540°C przez 8h oraz starzeniu w temperaturze 150°C przez 72h. Maksymalną przewodność elektryczną uzyskano po przesycaniu w 540° C przez 48h, oraz starzeniem w temperaturze 180°C przez 96h. Wzrost przewodności elektrycznej spowodowany jest zwiększeniem się odległości pomiędzy kryształami Si oraz wydzielaniem się półkoherentnych faz.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 4; 3035-3042
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Manganese and Iron Content on Morphology of Iron Intermetallic Phases in AlSi7Mg0.3 Alloy
Autorzy:
Podprocká, R.
Bolibruchová, D.
Powiązania:
https://bibliotekanauki.pl/articles/382655.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AlSi7Mg0,3 alloy
needle Al5FeSi phase
manganese
phase morphology
stop AlSi7Mg0,3
mangan
morfologia fazy
Opis:
Iron is presented as an impurity in Al-Si alloys and occurs in the form of the β-Al5FeSi phase formations. The presence of iron and other elements in the alloy causes the formation of large intermetallic phases. Due to the high brittleness of this phase, it reduces the mechanical properties and increases the porosity. Manganese is used to inhibit the formation of this detrimental phase. It changes the morphology of the phase to polyhedral crystals, skeletal formations, or Chinese script. The present article deals with the influence of various amounts of manganese (0.1; 0.2; 0.4; 0.6 wt. %) on the formation of iron-based intermetallic phases in the AlSi7Mg0.3 alloy with different levels of iron content (0.4; 0.8, 1.2 wt. %). The increase of iron content in each alloy caused the creation of more intermetallic compounds and this effect has been more significant with higher concentrations of manganese. In alloys where the amount of 1.2 wt. % iron is present, the shape of eutectic silicon grain changes from angular to short needle type.
Źródło:
Archives of Foundry Engineering; 2018, 18, 2; 95-99
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Iron Intermetallic Phases in the Alloy Based on Al-Si-Mg by Applying Manganese
Autorzy:
Podprocka, R.
Bolibruchova, D.
Powiązania:
https://bibliotekanauki.pl/articles/380327.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
intermetallic phases
alloy AlSi7Mg
needle Al5FeSi phase
applying manganese
manganese
fazy międzymetaliczne
stop AlSi7Mg
zastosowanie manganu
mangan
Opis:
Manganese is an effective element used for the modification of needle intermetallic phases in Al-Si alloy. These particles seriously degrade mechanical characteristics of the alloy and promote the formation of porosity. By adding manganese the particles are being excluded in more compact shape of “Chinese script” or skeletal form, which are less initiative to cracks as Al5FeSi phase. In the present article, AlSi7Mg0.3 aluminium foundry alloy with several manganese content were studied. The alloy was controlled pollution for achieve higher iron content (about 0.7 wt. % Fe). The manganese were added in amount of 0.2 wt. %, 0.6 wt. %, 1.0 wt. % and 1.4 wt. %. The influence of the alloying element on the process of crystallization of intermetallic phases were compared to microstructural observations. The results indicate that increasing manganese content (> 0.2 wt. % Mn) lead to increase the temperature of solidification iron rich phase (TAl5FeSi) and reduction this particles. The temperature of nucleation Al-Si eutectic increase with higher manganese content also. At adding 1.4 wt. % Mn grain refinement and skeleton particles were observed.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 217-221
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of the Influence of the Zone of Chills on the Casting Made of AlSi7Mg Alloy with Various Wall Thicknesses
Autorzy:
Piękoś, M.
Zych, J.
Powiązania:
https://bibliotekanauki.pl/articles/379681.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mechanical properties
thermal characteristics
cooling rate
AlSi7Mg alloy
chill
właściwości mechaniczne
charakterystyka termiczna
tempo schładzania
stop AlSi7Mg
Opis:
The influence of the chill on the AlSi7Mg alloy properties after the heat treatment T6, was realised in the system of the horizontally cast plate of dimensions 160x240 mm and thickness of 10 and 15 m. The cooling course in individual casting zones was recorded, which allowed to determine the solidification rate. Castings were subjected to the heat treatment T6 process. Several properties of the alloy such as: hardness BHN, density, tensile strength UTS, elongation %E were determined. The microstructure images were presented and the structural SDAS parameter determined. The performed investigations as well as the analysis of the results allowed to determine the influence zone of the chill. The research shows that there is a certain dependence between the thickness of the casting wall and the influence zone of the chill, being not less than 2g, where g is the casting wall thickness. The next aim of successive investigations will be finding the confirmation that there is the dependence between the casting wall thickness and the influence zone of the chill for other thicknesses of walls. We would like to prove that this principle is of a universal character.
Źródło:
Archives of Foundry Engineering; 2019, 1; 127-132
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Casting Wall Thickness on Crystallisation Under Pressure
Autorzy:
Pastirčák, R.
Ščury, J.
Brůna, M.
Bolibruchová, D.
Jakubski, J.
Powiązania:
https://bibliotekanauki.pl/articles/353947.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
squeeze casting
AlSi7Mg0.3 alloy
AlSi12 alloy
pressure
wall thickness
Opis:
The paper deals with squeeze casting technology. For this research a direct squeeze casting method has been chosen. The influence of process parameters variation (casting temperature, mold temperature, pressure) on mechanical properties and structure will be observed. The thicknesses of the individual walls were selected based on the use of preferred numbers and series of preferred numbers (STN ISO 17) with the sequence of 3.15, 4.00, 5.00, 6.00 and 8.00 mm. The width of each wall was 22 mm with a length of 100 mm. As an experimental material was chosen the AlSi12 and AlSi7Mg0.3 alloys. The mechanical properties (UTS, E) for individual casting parameters and their individual areas of different thicknesses were evaluated. In the structure the influence of pressure on the change of the eutectic morphology, the change of the volume of eutectic and the primary alpha phase, the effect of the pressure on the more fine-grain and the regularization of the structure were evaluated.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 4; 1889-1893
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 31

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