1. 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

2. 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 Mg 2 Pb 550 o C) Extensive solubility of Pb in Mg Limited Mg solubility can be considered as a component of the phase diagrams

3. 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