Hardening
Increasing the hardness by suitable treatment, usually involving heating and cooling. When applicable, the following more specific terms should be used: age hardening, case hardening, flame hardening, induction hardening, precipitation hardening,, quench hardening and through hardening.
See also: Age Hardening, Hardenability, Jominy Test, Oil Hardening, Precipitation Hardening, Vicker′s Hardness.
Subjects: Mechanical Engineering