Method for making a strip or a workpiece cut out from a cold rolled maraging steel strip

A maraging steel strip or part and process for manufacture of a strip or of a part cut out of a strip of cold-rolled maraging steel and hardened by a hardening heat treatment. In the process, before the hardening heat treatment is performed, the strip or the part is subjected to cold plastic deforma...

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Bibliographische Detailangaben
1. Verfasser:	LUCIEN COUTU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A maraging steel strip or part and process for manufacture of a strip or of a part cut out of a strip of cold-rolled maraging steel and hardened by a hardening heat treatment. In the process, before the hardening heat treatment is performed, the strip or the part is subjected to cold plastic deformation with a degree of working greater than 30% and the strip or the part is subjected to recrystallization annealing in order to obtain a fine-grained structure with ASTM index higher than 8. The composition by weight of the maraging steel is: 12%