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Wyświetlanie 1-2 z 2
Tytuł:
Analysis of Thermal Stability of Intermetallic Phases Precipitates in Continuous Ingots of AlCu4MgSi Alloy
Autorzy:
Nuckowski, P. M.
Kondracki, M.
Wróbel, T.
Powiązania:
https://bibliotekanauki.pl/articles/382300.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium alloys
phase analysis
high temperature X-ray diffraction
thermal-derivative analysis
stopy aluminium
analiza fazowa
wysokotemperaturowa dyfrakcja rentgenowska
analiza termopochodna
Opis:
The article presents the results of research concerning to AlCu4MgSi alloy ingots produced using horizontal continuous casting process. The presented research was focused on the precise determination of phase composition of the precipitates formed during the solidification of ingots and the analysis of their thermal stability. In order to assess the morphology of precipitates in the AlCu4MgSi alloy, data obtained by using a computer simulation of thermodynamic phenomena were compiled with results obtained using advanced research techniques, i.e. High-temperature X-ray diffraction (HT-XRD), SEM-EDS, Thermal and derivative analysis (TDA) and Glow discharge optical emission spectroscopy (GD OES). SEM observations and analysis of chemical composition in micro-areas showed that the precipitates are mainly intermetallic θ-Al2Cu and β-Mg2Si phases, and also presence of Al19Fe4MnSi2 intermetallic phase was confirmed by X-ray diffraction studies. Based on the prepared Thermo-Calc simulation data, high-temperature X-ray diffraction measurements were conducted.
Źródło:
Archives of Foundry Engineering; 2019, 4; 99-104
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Variable Parameters of Horizontal Continuous Casting on the Structure of AlCu4MgSi Alloy Ingots
Autorzy:
Nuckowski, P. M.
Wróbel, T.
Powiązania:
https://bibliotekanauki.pl/articles/380484.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metallography
aluminum alloys
continuous casting
structure analysis
X-ray diffraction
phase analysis
metalografia
stopy aluminium
odlewanie ciągłe
analiza struktury
dyfrakcja rentgenowska
analiza fazy
Opis:
The article presents results of research on the influence of variable parameters of horizontal continuous casting on the structure of AlCu4MgSi (EN AW-2017A) alloy ingots. The special character of the process allows for a continuous change of some of its parameters, namely, of the casting speed and of the rate of the cooling fluid flow thorough the crystallizer. These parameters have a significant impact on the crystallization process of the liquid metal. Depending on the cooling rate, intensity of the convection inside the solidifying alloy, and its chemical composition, there may arise some differences in the structure of the cast. In this study, ingots obtained at different casting speeds have been analyzed. The research methodology, based on light microscopy and electron microscopy (SEM), as well as energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), allowed for a thorough examination of the structure of the studied materials. The results were shown that an increase in the ingot casting speed leads to an increase in the average grain surface area.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 196-202
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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