On the formation of intermetallics in rapidly solidifying Al–Fe–Si alloys

The Sequence of Intermetallics Formation during the Solidification of an Al-Mg-Si Alloy Containing La

“…Once a nucleus formed, it would be surrounded by the primary phase whose growth rate is much faster than that of the ordered intermetallic compound. [23] Consequently, one should see small individual intragranular Al 13 Fe 4 particles, which are not observed in the alloys investigated. Second, Al 13 Fe 4 can nucleate in the melt and then grow being surrounded by the liquid phase.…”

AFM study of the effects of laser surface remelting on the morphology of Al–Fe aerospace alloys

“…Besides, an assessment of the entire Al-Fe system that described the stable and metastable equilibria in the Al-Fe system was performed by Sundman et al [17]. Furthermore, the authors Malakhov et al [18] did a deep thermodynamic study on the formation of intermetallics in rapidly solidifying Al-Fe-Si alloys.…”

The formation mechanism of Al6(Fe, Mn) in die-cast Al–Mg alloys

“…Phase competition is a common phenomenon in Al-Fe and Al-Mn systems under high cooling rate, and has been intensively studied [17][18][19][20]. However, the competitive precipitation of stable and metastable (Fe,Mn)-rich phases in Al-Mg-Mn-Fe alloys has never been studied.…”

“…Therefore, diffusion has a great influence on nucleation. According to Malakhov's study [20], if the composition of a phases is close to the melt composition, then the precipitation of this particular phases is facilitated, because corresponding nucleation event does not require a long-range diffusion, which might be slow in supercooled melt. [25].…”