Metallurgical Terms

Q

A B C D E F G H I J K L M
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Quantimet
(See Image Analyzing Computer)

Quenching
Rapid cooling from high temperature generally by immersion in a liquid bath of oil or water, but molten salt or metal may be used. The object is to reduce the temperature of a metal rapidly and thus suppress a phase transformation. It is commonly used to harden steel, but austenitic steel may be quenched to prevent carbide precipitation and quenching after tempering is used to prevent temper brittleness.

Q.T.M.
(See image Analyzing Computer).

Quenching Crack
(Hardening Crack) A fracture resulting from thermal and/or transformation stresses, induced during rapid cooling.