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    Wyświetlanie 1-13 z 13
    Tytuł:
    Analysis and Evaluation of Effect of Manganese Content on Properties of EN AC 46000 Aluminum Alloy
    Autorzy:
    Pasternak, Martyna
    Brzeziński, Marcin
    Piwowarczyk, Gabriela
    Powiązania:
    https://bibliotekanauki.pl/articles/107001.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    aluminum alloy
    pressure casting
    manganese
    strength of material
    Opis:
    This article is the effect of industrial work and many surveys in the one of the Polish foundries that specialize in aluminum alloys. The main goal of our explorations is to evaluate the influence of manganese on Al-Si alloy properties. In die-cast alloys, it is recommended to use larger amounts of iron to reduce the impact on the pressure chamber and mold. Manganese neutralizes the harmful effect of iron by changing the morphology of the separated brittle ferrous phases. The unfavorable form of the iron-containing phases in the form of long needles changes into the forms of fine compact crystals, which are less harmful to the mechanical properties. Nowadays, the main client requirement is to obtain the right parameters at the best price. Specifically, the customer is in the automotive industry, where new technologies provide a connection between the high quality and low weight of car parts [1–3].
    Źródło:
    Journal of Casting & Materials Engineering; 2019, 3, 1; 14-18
    2543-9901
    Pojawia się w:
    Journal of Casting & Materials Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza rozwoju systemów dozowania stopów aluminium w zimnokomorowych maszynach ciśnieniowych
    Analysis of the Development of Dosing Systems of Aluminium Alloys in the Cold Chamber Die Casting Machines
    Autorzy:
    Kowalczyk, W.
    Dańko, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/381900.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    odlewnictwo ciśnieniowe
    maszyna ciśnieniowa
    stop aluminium
    die casting
    die casting machine
    aluminum alloy
    Opis:
    W publikacji poddano analizie tradycyjne i automatyczne systemy dozowania stopów aluminium w zimnokomorowych maszynach ciśnieniowych dominujące w europejskim odlewnictwie. Omówiono ogólne cechy istniejących, automatycznych rozwiązań systemów dozowania oraz nowych rozwiązań, powiązanych z maszyną ciśnieniową. Przedstawiono także podejmowane przez producentów działania w zakresie dalszego rozwoju tych systemów.
    The analysis of traditional and automated dispensing systems of aluminium alloys in cold-chamber die casting machines, prevalent in European foundries is presented in paper. The general characteristics of existing automated dispensing systems solutions, characterizing the functionality of new solutions in cooperation with the die casting machine, as well as the actions taken to further their development is presented.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 4 spec.; 73-78
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations of stress and strain state of aluminum alloys during a hot extrusion and patterns of structure and feature formation
    Autorzy:
    Aghbalyan, Suren G.
    Bagdasaryan, Vazgen
    Vasilyan, Gayane A.
    Wyczółkowski, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/36074875.pdf
    Data publikacji:
    2024
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    casting
    aluminum alloy
    hot extrusion
    slip
    stress
    matrix
    pressure
    Opis:
    This paper investigates the stress and strain state as well as formation processes of structure and features of aluminum alloys during the hot extrusion. It has been shown that during the hot extrusion the ring layers of an extruded element experience not only longitudinal and transverse deformations, but also a slip. The slip increases from inner layers to the surface layer. The tensile principal stresses and the sum of slip deformations also increase. It has been also demonstrated that at the exit of the pressing part the tensile principal stresses have different directions, forming an angle with extruder axis, which also increases towards the surface. In conclusion, it has been stated that the main radial and circumferential deformations act as restraining deformations.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2024, 33, 1; 3-16
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Cooling Rate on the Precipitation Characteristics of Cast Al-Si-Cu Alloy
    Autorzy:
    Okayasu, M.
    Sahara, N.
    Touda, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079810.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    casting
    solid solution
    aging
    solidification rate
    precipitation
    stop aluminium
    odlew
    szybkość krzepnięcia
    Opis:
    The influence of the cooling rate on the extent of precipitation hardening of cast aluminum alloy (ADC12) was investigated experimentally. This study explored the cooling rate of the solidification of Cu in the α-Al phase to improve the mechanical properties of ADC12 after an aging process (Cu based precipitation hardening). The solid solution of Cu occurred in the α-Al phases during the casting process at cooling rates exceeding 0.03°C/s. This process was replaced with a solid solution process of T6 treatments. The extent of the solid solution varied depending on the cooling rate; with a higher cooling rate, a more extensive solid solution was formed. For the cast ADC12 alloy made at a high cooling rate, high precipitation hardening occurred after low-temperature heating (at 175°C for 20 h), which improved the mechanical properties of the cast Al alloys. However, the low-temperature heating at the higher temperature for a longer time decreased the hardness due to over aging.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 4; 55-60
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Usable Properties of Aluminum Continuous Ingots
    Autorzy:
    Wróbel, T.
    Szajnar, J.
    Bartocha, D.
    Stawarz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/381301.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    continuous casting
    aluminum alloy
    structure
    inoculation
    electromagnetic stirring
    odlewanie ciągłe
    stop aluminium
    modyfikacja
    mieszanie elektromagnetyczne
    Opis:
    In paper is presented results of studies concerning ingot of Al with a purity of 99.5% cast with use of stand of horizontal continuous casting. Mainly together with casting velocity was considered influence of electromagnetic stirrer, which was placed in continuous casting mould on refinement of ingots structure and theirs usability to plastic deformation. Effect of structure refinement and usability to plastic deformation obtained by influence of electromagnetic stirring was compared with refinement obtained by use of traditional inoculation, which consists in introducing of additives i.e. Ti and B to metal bath. On the basis of obtained results was affirmed that inoculation realized by electromagnetic stirring in range of continuous casting mould guarantees improvement in structure refinement and usability to rolling of pure Al continuous ingots.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 3; 85-90
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Precipitation Hardening of Continuous Ingots of AlSi2Mn and AlCu4MgSi Alloys
    Autorzy:
    Wróbel, T.
    Nuckowski, P. M.
    Jurczyk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/382653.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    precipitation hardening
    continuous casting
    silicon
    cooper
    stop aluminium
    utwardzanie wydzieleniowe
    odlewanie ciągłe
    silikon
    miedź
    Opis:
    The paper presents the research results of the influence of the precipitation hardening on hardness and microstructure of selected Al-Si and Al-Cu alloys obtained as ϕ30 mm ingots in a horizontal continuous casting process. The ingots were heat treated in process of precipitation hardening i.e. supersaturation with subsequent accelerated or natural ageing. Moreover in the range of the study it has been carried out investigations of chemical constitution, microscopic metallographic with use of scanning electron microscope with EDS analysis system, and hardness measurements using the Brinell method. On basis of obtained results it has been concluded that the chemical constitution of the investigated alloys enables to classify them into Al alloys for the plastic deformation as EN AW-AlSi2Mn (alternatively cast alloy EN AC-AlSi2MgTi) and as EN AW-AlCu4MgSi (alternatively cast alloy EN AC-AlCu4MgTi) grades. Moreover in result of applied precipitation hardening has resulted in the precipitation from a supersaturated solid solution of dispersive particles of secondary phases rich in alloying element i.e. Si and Cu respectively. In consequence it has been obtained increase in hardness in case of AlSi2Mn alloy by approximately 30% and in case of AlCu4MgSi alloy by approximately 20% in comparison to the as-cast state of continuous ingots.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 2; 181-186
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Friction and Wear Behavior of 201HT Cast Aluminum Alloy with Various Competitive Material
    Autorzy:
    Li, R.
    Chen, L. J.
    Su, M.
    Zeng, Q.
    Li, H.
    Liu, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/382627.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    casting
    aluminum alloy
    friction and wear
    competitive material
    odlewanie
    stop aluminium
    tarcie i zużycie
    materiał konkurencyjny
    Opis:
    The friction and wear properties of 201HT aluminum alloys and the corresponding competitive coupons were tested on an electro-hydraulic servo face friction and wear testing machine (MM-U10G). The microstructures of the competitive coupons were investigated by scanning electron microscopy (SEM) and consequently the corresponding friction and wear mechanisms were studied. The results demonstrated that: (1) the best competitive material of friction and wear performance of the 201HT was the 201HTC. (2) the 201HTC modified by carbon following the initial mill for oil storage of the micro-groove to be produced, increased the corresponding lubrication performance reduced the friction coefficient and wear rate effectively. (3) the 201HT-201HTC could obtain both better friction and wear mainly due to the initial process of grinding following the 201HT plastic deformation occurred in the surface and the formation of a series of re-melting welding points, whereas the 201HT material hardness would be similar to the 201HTC material hardness, which led into the competitive material friction and wear performance improvement.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 55-62
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical Properties and Melt Quality Relationship of Sr-modified Al-12Si Alloy
    Autorzy:
    Uludağ, M.
    Uyaner, M.
    Yilmaz, F.
    Dişpinar, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/380647.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    silicon alloy
    modification
    quality of casting
    bifilm index
    porosity
    stop aluminium
    stop krzemowy
    jakość odlewu
    porowatość
    Opis:
    The formation of oxide film on the surface of aluminium melts, i.e. bifilms, are known to be detrimental when they are incorporated into the cast part. These defects causes premature fractures under stress, or aid porosity formation. In this work, Al-12 Si alloy was used to cast a step mould under two conditions: as-received and degassed. In addition, 10 ppi filters were used in the mould in order to prevent bifilm intrusion into the cast part. Reduced pressure test samples were collected for bifilm index measurements. Samples were machined into standard bars for tensile testing. It was found that there was a good agreement with the bifilm index and mechanical properties.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 4; 134-140
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development and optimization of casting technology on part of the suspension of a heavy vehicle used in difficult environmental wetland conditions
    Opracowanie oraz optymalizacja konstrukcji odlewu wahacza maszyny ciężkiej pracującej w trudnych warunkach środowiska wodno-błotnego
    Autorzy:
    Małysza, M.
    Żuczek, R.
    Pysz, S.
    Gil, A.
    Wieliczko, P.
    Kowalski, P.
    Wańczyk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/391765.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
    Tematy:
    ICME
    simulation
    aluminum alloy
    rapid prototyping
    casting optimization
    zintegrowane projektowanie (ICME)
    symulacja komputerowa
    stopy aluminium
    szybkie prototypowanie
    optymalizacja odlewu
    Opis:
    The development of a new element is a very complex procedure requiring a combination of many factors related to the design and manufacture phases. The most efficient way is to use computer simulation which allows for verification of the whole design and production process. Over the years, the development of computer technologies has allowed for the development of an Integrated Computational Material Engineering (ICME). This method in logical sequence makes it possible to integrate the project activities, to develop new manufacturing methods, to select suitable materials and to verify the final process. Such multi-threaded operations significantly shorten the time required for the production of the prototype which speeds up the implementation of the planned production of the designed casting. The additional advantage of such work is the possibility of ongoing monitoring of the changes and their impact on the final product.
    Opracowanie nowej konstrukcji jest bardzo skomplikowaną procedurą wymagającą połączenia wielu zazębiających się kroków projektowych połączonych z przesłankami technologicznymi wybranej metody wytwarzania. Obowiązujące trendy projektowania uwzględniają wykorzystanie symulacji komputerowej, która znajduje zastosowanie w ocenie założeń konstrukcyjnych oraz analizę numeryczną zjawisk występujących w trakcie wytwarzania. Wieloletni rozwój takiego podejścia pozwolił na stworzenie zintegrowanego systemu projektowania z ang. Integrated Computational Material Engineering (ICME). Ogólna charakterystyka metody polega na utworzeniu logicznego ciągu przyczynowo-skutkowego projektowania, doboru materiału i weryfikacji procesu wykonywania oraz eksploatacji. Takie wielowątkowe podejście pozwala na znaczące skrócenie czasu wymaganego do przygotowania produkcji funkcjonalnego prototypu, a następnie wprowadzenie go do testów przemysłowych. Niewątpliwą zaletą jest możliwość ciągłego monitorowania zmian konstrukcyjnych i technologicznych oraz ich wpływ na efekt końcowy produktu.
    Źródło:
    Prace Instytutu Odlewnictwa; 2016, 56, 4; 363-368
    1899-2439
    Pojawia się w:
    Prace Instytutu Odlewnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Sand Fluidization on Structure and Properties of Aluminum Lost Foam Casting
    Autorzy:
    Kaliuzhnyi, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/380477.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technologies
    lost foam casting
    aluminum alloy
    sand fluidization
    innowacyjne technologie odlewnicze
    metoda traconej piany
    stop aluminium
    fluidyzacja
    Opis:
    The article presents investigation results of the effect of sand fluidization on the structure and mechanical properties of AlSi9 aluminum alloy. Castings were made by lost foam casting process with sand fluidization in mold at the stages of their solidification and cooling. Sand fluidization was achieved by blowing sand bed with compressed air in a foundry container. The metallographic study was carrying out on samples cut from different sections of the castings. Mechanical properties were determined on specimens made from cast samples. Microstructural analysis showed that sand fluidization increases the cooling rate, as a result, the main microstructural components of the alloy – SDAS, eutectic silicon and needles of the rich-iron phase – decrease. Moreover, in different sections of the casting structure is more uniform. With an increasing the air flow rate, a greater refinement of the structure is observed. Through the use of sand fluidization, the mechanical properties of LFC aluminum alloys increase to the level of gravity die castings.
    Źródło:
    Archives of Foundry Engineering; 2020, 20, 1; 122-126
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation and Casting Process of Aluminum Alloy Multi-Way Valve Body with Various Gating Systems
    Autorzy:
    Rong, L.
    Lunjun, C.
    Ming, S.
    Qi, Z.
    Yong, L.
    Heng, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/381887.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    casting process
    aluminum alloy
    valve body
    gating system
    simulation analysis
    proces odlewniczy
    stop aluminium
    korpus zaworu
    układ wlewowy
    analiza symulacji
    Opis:
    In order to study the effects of various gating systems on the casting of a complex aluminum alloyed multi-way valve body, both software simulation analysis and optimization were carried out. Following, the aluminum alloyed multi-way valve body was cast to check the pouring of the aluminum alloy valve body. The computer simulation results demonstrated that compared to the single side casting mode, the casting method of both sides of the gating system would reduce the filling of the external gas, while the air contact time would be lower. Adversely, due to the pouring on both sides, the melt cannot reach at the same time, leading to the liquid metal speed into the cavity to differ, which affected the liquid metal filling stability. The riser unreasonable setting led to the solidification time extension, resulting in a high amount of casting defects during solidification. Also, both gating systems led the entire casting inconsequential solidification. To overcome the latter problems, a straight gate was set at the middle pouring and the horizontal gate diversion occurred on both sides of pouring, which could provide better casting results for the aluminum alloyed multi-valve body.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 2; 84-94
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aluminum Alloy Development for Wheel Production by Low Pressure Die Casting with New Generation Computational Materials Engineering Approaches
    Autorzy:
    Yağcı, T.
    Cöcen, Ü.
    Çulha, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079795.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    foundry industry
    wheels
    low pressure casting
    materials engineering
    mechanical properties
    microstructural design
    stop aluminium
    przemysł odlewniczy
    koła
    odlewanie niskociśnieniowe
    inżynieria materiałowa
    właściwości mechaniczne
    projektowanie mikrostrukturalne
    Opis:
    Computational Materials Engineering (CME) is a high technological approach used to design and develop new materials including the physical, thermal and mechanical properties by combining materials models at multiple techniques. With the recent advances in technology, the importance of microstructural design in CME environments and the contribution that such an approach can make in the estimation of material properties in simulations are frequently discussed in scientific, academic, and industrial platforms. Determination of the raw material characteristics that can be modeled in a virtual environment at an atomic scale by means of simulation programs plays a big role in combining experimental and virtual worlds and creating digital twins of the production chain and the products. In this study, a new generation, alternative and effective approach that could be used to the development of Al-Si based wheel casting alloys is proposed. This approach is based on the procedure of optimizing the physical and thermodynamic alloy properties developed in a computer environment with the CME technique before the casting phase. This article demonstrates the applicability of this approach in alloy development studies to produce Al-Si alloy wheels using the low pressure die casting (LPDC) method. With this study, an alternative and economical way is presented to the alloy development studies by trial and error in the aluminum casting industry. In other respects, since the study is directly related to the automotive industry, the reduction in fuel consumption in vehicles is an expected effect, as the new alloy aims to reduce the weight of the wheels. In addition to conserving energy, reducing carbon emissions also highlights the environmental aspects of this study.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 4; 35-46
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of the Bonding Zone in a ZE41/AlSi12 Joint Fabricated by Liquid- Solid Compound Casting
    Autorzy:
    Mola, R.
    Bucki, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/381097.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    compound casting process
    magnesium alloy
    aluminum alloy
    bonding zone
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    proces odlewania
    stop magnezu
    stop aluminium
    strefa złącza
    Opis:
    The study involved using the liquid-solid compound casting process to fabricate a lightweight ZE41/AlSi12 bimetallic material. ZE41 melt heated to 660 °C was poured onto a solid AlSi12 insert placed in a steel mold. The mold with the insert inside was preheated to 300 °C. The microstructure of the bonding zone between the alloys was examined using optical microscopy and scanning electron microscopy. The chemical composition was determined through linear and point analyses with an energy-dispersive X-ray spectroscope (EDS). The bonding zone between the magnesium and aluminum alloys was about 250 μm thick. The results indicate that the microstructure of the bonding zone changes throughout its thickness. The structural constituents of the bonding zone are: a thin layer of a solid solution of Al and Zn in Mg and particles of Mg-Zn-RE intermetallic phases (adjacent to the ZE41 alloy), a eutectic region (Mg17(Al,Zn)12 intermetallic phase and a solid solution of Al and Zn in Mg), a thin region containing fine, white particles, probably Al-RE intermetallic phases, a region with Mg2Si particles distributed over the eutectic matrix, and a region with Mg2Si particles distributed over the Mg-Al intermetallic phases matrix (adjacent to the AlSi12 alloy). The microstructural analysis performed in the length direction reveals that, for the process parameters tested, the bonding zone forming between the alloys was continuous. Low porosity was observed locally near the ZE41 alloy. The shear strength of the AZ91/AlSi17 joint varied from 51.3 to 56.1 MPa.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 2; 203-208
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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