The transition that determines the micro-structure of the alloy is a solid-state process: Austenite <-> Ferrite + Cementite Austenite is stable above 727 C and is an interstitial solid solution of ...

If this alloy is cooled from the liquid state to about 550 C, it has formed a polycrystalline solid that is a substitutional solid solution of copper in the aluminum face centered cubic matrix. The ...