Vacuum Age Hardening
Precipitation hardening, also referred to as age hardening, is a technique where heat is applied to a malleable material, such as a metal alloy, in order to strengthen it. The technique hardens the alloy by creating solid impurities, called precipitates, which stop the movement of dislocations in the crystal lattice structure. Dislocations are the primary cause of plasticity in a material; thus, the absence of dislocations increases the material's yield strength. Alloys typically used include alloys of aluminum, magnesium, nickel, and titanium. NATIONAL HEAT TREAT has 2 furnaces capable of performing this process.