A CALPHAD-Based Investigation of the Sludge Factor

• DOI: 10.1007/s40962-023-01018-5
• Publication Date: 2023-04-12T17:02:54Z
• Authors: Erik Granhed; Alessandro De Mori; Eleonora Battaglia; Lars Arnberg; Greta Lindwall
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract The formation of $$\alpha \text {-AlFeSi}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>α</mml:mi> <mml:mtext>-AlFeSi</mml:mtext> </mml:mrow> </mml:math> sludge in AlSi10Mg has been studied by computational thermodynamics based on the CALPHAD method. Both amount and onset temperature $$T_{\text{Sludge}}$$ <mml:msub> <mml:mi>T</mml:mi> <mml:mtext>Sludge</mml:mtext> </mml:msub> have investigated. We find that increases linearly with empirical factor for composition interval, which agrees well published experimental data. also a notable difference between total phase pre-eutectic sludge. follows similar linear relationship but only when there is no Cr present material. However, we propose modified like expression significantly improved predictability compared to previous expressions. With present, {-AlMSi}$$ <mml:mtext>-AlMSi</mml:mtext> phase, rich poor Mn, forms at higher leads amounts suggesting be more detrimental than previously thought. Finally, suggest ranges validity linearized outside full thermodynamic calculations accounting all multicomponent effects must used.