Traitement thermique
FRUn traitement thermique consiste à appliquer à un matériau un cycle contrôlé de chauffage, de maintien et de refroidissement afin de modifier ses propriétés ou sa structure. Pour les métaux, les procédés peuvent notamment viser la dureté, la ductilité ou la réduction de contraintes internes. Le choix dépend de la nuance, de l’état initial et des exigences de la pièce. Températures, durées, atmosphère, refroidissement et contrôles doivent être définis pour le procédé retenu; tous les traitements ne conviennent pas à tous les alliages.
ENHeat treatment applies a controlled cycle of heating, holding and cooling to a material to modify its properties or structure. For metals, processes may target hardness, ductility or relief of internal stresses. Selection depends on grade, initial condition and part requirements. Temperature, duration, atmosphere, cooling and inspection must be defined for the selected process; not every treatment suits every alloy.
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