Autor: Mikolajczak, P.L. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Directional Solidification of AlSi Alloys with Fe Intermetallic Phases
Autorzy:: Mikołajczak, P.
Ratke, L.
Powiązania:: https://bibliotekanauki.pl/articles/379990.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: directional solidification
aluminum alloys
calibration
intermetallic phases
krzepnięcie kierunkowe
stopy aluminium
kalibracja
fazy międzymetaliczne
Opis:: Directional solidification technique is an important research instrument to study solidification of metals and alloys. In the paper the model [6,7,8] of directional solidification in special Artemis-3 facility was presented. The current work aimed to propose the ease and efficient way in calibrating the facility. The introduced M coefficient allowed effective calibration and implementation of defined thermal conditions. The specimens of AlSi alloys with Fe-rich intermetallics and especially deleterious β-Al5FeSi were processed by controlled solidification velocity, temperature gradient and cooling rate.
Źródło:: Archives of Foundry Engineering; 2014, 14, 1; 75-78
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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Skocz do pozycji: 3.

Tytuł:: Effect of Contact Gap in Directional Solidification of AlSiFe Alloys
Autorzy:: Mikołajczak, P.
Ratke, L.
Powiązania:: https://bibliotekanauki.pl/articles/381310.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: directional solidification
aluminium alloys
calibration
intermetallic phases
krzepnięcie kierunkowe
stop aluminium
kalibracja
faza międzymetaliczna
Opis:: One of the methods to study solidification of alloys and metals is directional solidification. In the paper the effect of the contact gap between the analyzed specimen and the bottom heater was analysed. The occurring contact gap caused the increase in planned solidification velocity. For the facility calibration the methodology with M coefficient was applied. The experiments revealed efficient values of M and allowed to conduct efficiently the directional solidification of AlSiFe alloys in wide range of growth rates. The effect of the contact gap seems to be random phenomena and most difficult factor influencing precisely planned directional solidification.
Źródło:: Archives of Foundry Engineering; 2014, 14, 3 spec.; 41-44
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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