Fig. 1. The as-cast microstructure of the Al–Si–Cu alloy containing 0.1 wt.% Fe

Fig. 1. The as-cast microstructure of the Al–Si–Cu alloy containing 0.1 wt.% Fe. (a) Optical micrograph showing the overall microstructure; (b) SEM image showing the morphology of eutectic Si phase in the deeply etched sample; (c) backscattered SEM micrograph showing the distribution of Fe-and Cu-rich intermetallic phases (inset: the fine compact α-AlFeMnSi intermetallics); and (d) SEM image showing the morphology of Al2Cu phase (inset: the irregular AlCuMgSi intermetallics).

Fig. 1. The as-cast microstructure of the Al–Si–Cu alloy containing 0.1 wt.% Fe. (a) Optical micrograph showing the overall microstructure; (b) SEM image showing the morphology of eutectic Si phase in the deeply etched sample; (c) backscattered SEM micrograph showing the distribution of Fe-and Cu-rich intermetallic phases (inset: the fine compact α-AlFeMnSi intermetallics); and (d) SEM image showing the morphology of Al2Cu phase (inset: the irregular AlCuMgSi intermetallics).

Fig. 1. The as-cast microstructure of the Al–Si–Cu alloy containing 0.1 wt.% Fe. (a) Optical micrograph showing the overall microstructure; (b) SEM image showing the morphology of eutectic Si phase in the deeply etched sample; (c) backscattered SEM micrograph showing the distribution of Fe-and Cu-rich intermetallic phases (inset: the fine compact α-AlFeMnSi intermetallics); and (d) SEM image showing the morphology of Al2Cu phase (inset: the irregular AlCuMgSi intermetallics).

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