Quenching
131TWA Flight 800 — For the 1964 crash of a TWA Boeing 707 in Rome, Italy, see TWA Flight 800 (1964). TWA Flight 800 Recovered TWA 800 wreckage Accident summary Date …
132Heat treatment — is a method used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are also used in the manufacture of many other materials, such as glass. Heat treatment… …
