Precipitation hardening and martensitic transformation are distinct hardening mechanisms in metallurgy. Martensitic transformation specifically refers to the restructuring of the crystal lattice in iron-carbon (Fe-C) alloys, primarily in steel and certain titanium alloys, achieved through quenching. In contrast, precipitation hardening is a broader process applicable to various alloys, including aluminum, copper, titanium, magnesium, nickel, and cobalt, where hardening occurs through the formation of intermetallic phases during tempering. Both mechanisms can coexist in certain steel compositions, but their applications and processes differ significantly.
PREREQUISITESMetallurgists, materials scientists, and engineers involved in alloy development and heat treatment processes will benefit from this discussion.