Quench Hardening
Hardening a ferrous alloy by austenitizing and then cooling rapidly enough so that some or all of the austenite transforms to martensite. The austenitizing temperature for hypoeutectoid steels is usually above the temperature at which transformation of ferrite to austenite is completed during heating and for hypereutectoid steels usually between Acl and Acz n,.
See also: Austempering, Martensite.
Subjects: Mechanical Engineering