Effects of Si solution in ?-Al13Fe4 on phase transformation between Fe-containing intermetallic compounds in Al alloys

?-Al13Fe4 is one of the common Fe-containing intermetallic compounds (FIMCs) that forms during solidification in Al alloys. Silicon (Si) as impurity or solute alloys easily doped into ?-Al13Fe4, which not only causes compositional variation but also modifies lattice parameters, and some circumstances, changes crystal structure ?-Al13Fe4. In this study, multiple Al-Fe Al-Fe-Si solidified equilibrium non-equilibrium phase primary eutectic structures were designed investigated. Different types transformation among other FIMCs such ?’-Al8Fe2Si, ?-Al15(Fe,Mn)3Si2 ?-Al5FeSi investigated with scanning electron microscopy (SEM), transmission (TEM) single X-ray analysis. The composition parameters observed study measured by TEM orientation relationships between (?’-Al8Fe2Si, ?-Al5FeSi) determined selection sequence comparing diagram calculation casting experiments. configuration entropy was calculated to build up structural models. Finally, influence incorporation Si on discussed from crystallographic thermal stability perspectives.