4. Heat treatment
The reader is referred to the articles in the Heat treatment volume of this treatise.
The characteristics and properties of castings can be modified or improved by heat treatment. According to the Association Technique de Traitement Thermique (AT T T), this is "a succession of operations – heating, holding at temperature, cooling – applied to a metal alloy in the solid state to obtain a modification of its properties". Some treatments affect the mass of the metal, others only the surface. Examples include (but are not limited to) :
produce changes in micrographic structure;
increase or reduce the alloy's content of certain elements by physical-chemical action (surface decarburization in the manufacture of white-core malleable cast...
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Heat treatment
Surface treatments
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