annealing heat treatment

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• Heat 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… …   Wikipedia

• Annealing (metallurgy) — Annealing, in metallurgy and materials science, is a heat treatment wherein a material is altered, causing changes in its properties such as strength and hardness. It is a process that produces conditions by heating to above the recrystallization …   Wikipedia

• annealing — Treatment of a metal, alloy, or other material by heating to a predetermined temperature, holding for a certain time, and then cooling to room temperature, done to improve ductility and reduce brittleness. Process annealing is carried out… …   Universalium

• Annealing — may refer to: *Annealing (metallurgy), a heat treatment that alters the microstructure of a material causing changes in properties such as strength and hardness *Annealing (glass), heating a piece of glass to remove stress *Annealing (biology),… …   Wikipedia

• annealing — noun hardening something by heat treatment • Syn: ↑tempering • Derivationally related forms: ↑temper (for: ↑tempering) • Hypernyms: ↑hardening …   Useful english dictionary

• subcritical annealing — heating to, and holding at, some point below the critical temperature. Subsequent cooling may be in air. This form of heat treatment has a variety of uses depending on the temperature and specification of the steel, its purpose is often to soften …   Mechanics glossary

• white annealing — a heat treatment process carried out on pickled steel with the objective of eliminating the hydrogen that has entered the steel during the pickling operation and thus removing any tendency to hydrogen embrittlement …   Mechanics glossary

• Cryogenic treatment — A cryogenic treatment is the process of treating workpieces to cryogenic temperatures (i.e. below −190 °C (−310 °F)) to remove residual stresses and improve wear resistance on steels. The process has a wide range of applications from… …   Wikipedia

• Malleable iron — is cast as White iron, the structure being a metastable carbide in a pearlitic matrix. Through an annealing heat treatment the brittle as cast structure is transformed. Carbon agglomerates into small roughly speherical aggregates of graphite… …   Wikipedia

• Metalworking terminology — This article is a list of terms commonly used in the practice of metalworking. Contents 1 Processes 1.1 Casting 1.2 Forge work 1.3 Heat treating …   Wikipedia

• steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …   Universalium