Download - Copper Zinc Phase Diagram
Chapter 9-15
The copper-zinc phase diagram:Terminal and Intermediate Solid Solutions
Terminal solid solutions
intermediate solid solutions
Commercial brasses are copper-rich copper-zinc alloys. For example, cartridge brass is 70 wt% copper-30 wt% zinc
Chapter 9-16
The magnesium-lead phase diagram:
like two simple eutectic diagrams joined back to back
Intermetallic compound (with distinct chemical formula), NOT a solid solution.It is 19 wt% Mg-81 wt% Pb
Melting temperature of Mg2Pb 550 oC)
Extensive solubility of Pb in Mg
Limited Mg solubility
can be considered as a component of the phase diagrams
Chapter 9-15
EUTECTIC and PERITECTIC REACTIONS
• Eutectic transformation also called eutectic reaction• A eutectic reaction is an invariant reaction, and a eutectic point is also called an invariant point• the horizontal tie line at the eutectoid temperature is termed a eutectoid isotherm• Point P represents a peritectic reaction