VACUUM FURNACE. A furnace using low atmospheric pressures instead of a protective gas atmosphere like most heat-treating furnaces. Vacuum furnaces are categorized at hot wall or cold wall, depending on the location of the heating and insulating components.
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SELECTIVE QUENCHING. Quenching only certain portions of an object.
SUPERHEATING. Heating above the temperature at which an equilibrium phase transformation should occur without actually obtaining the transformation.
THERMAL FATIGUE. Fracture resulting from the presence of temperature gradients that vary with time in such a manner as to produce cyclic stresses […]
WORK HARDNESS. Hardness developed in metal resulting from cold working.