Temat: strefa półciekła - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Formation of porosity in Al-Si alloys
Autorzy:: Brůna, M.
Sládek, A.
Kucharčík, L.
Powiązania:: https://bibliotekanauki.pl/articles/382386.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: porowatość
stop aluminium
symulacja
strefa półciekła
porosity
aluminum alloy
simulation
mushy zone
tatur test
Opis:: Porosity is one of the major defects in aluminum castings, which results in a decrease of the mechanical properties. It is induced by several mechanisms (solidification shrinkage and gas segregation). One of the method for complex evaluation of macro and micro porosity in Al-Si alloys is Tatur test technique. This article deals with evaluation of porosity with help of Tatur tests for selected Al-Si alloys. These results will be compared with results obtained from simulation software ProCAST.
Źródło:: Archives of Foundry Engineering; 2012, 12, 1; 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:: Thermodynamic Assessment of Mushy Zone in Directional Solidification
Autorzy:: Mikołajczak, P.
Ratke, L.
Powiązania:: https://bibliotekanauki.pl/articles/380005.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: aluminum alloy
directional solidification
mushy zone
CALPHAD technique
Fe intermetallics
β-Al5FeSi
stop aluminium
krzepnięcie kierunkowe
strefa półciekła
technika CALPHAD
Opis:: Solidification of AlSiFe alloys was studied using a directional solidification facility and the CALPHAD technique was applied to calculate phase diagrams and to predict occurring phases. The specimens solidified by electromagnetic stirring showed segregation across, and the measured chemical compositions were transferred into phase diagrams. The ternary phase diagrams presented different solidification paths caused by segregation in each selected specimen. The property diagrams showed modification in the sequence and precipitation temperature of the phases. It is proposed in the study to use thermodynamic calculations with Thermo-Calc which enables us to visualize the mushy zone in directional solidification. 2D maps based on property diagrams show a mushy zone with a liquid channel in the AlSi7Fe1.0 specimen center, where significant mass fraction (33%) of β-Al₅FeSi phases may precipitate before α-Al dendrites form. Otherwise liquid channel occurred almost empty of β in AlSi7Fe0.5 specimen and completely without β in AlSi9Fe0.2. The property diagrams revealed also possible formation of α–Al₈Fe₂Si phases.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4; 101-109
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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