Phase Diagrams

Binary Phase Diagrams

· Binary phase diagrams may be obtained from cooling curves for alloys.

· Pure materials have unique melting points, but alloys melt over a range of temperatures.
· To make an alloy of a specific composition, the correct weight percents of the components are co-melted and solidified.
· The diagram illustrates the equilibrium cooling behavior for the Cu - 50 weight % Ni alloy.

From: Guy & Hren, "Elements of Physical Metallurgy," Addison Wesley (1974)