METHOD FOR FABRICATING VEHICLE COMPONENTS AND NEW USE OF A PRECIPITATION HARDENABLE MARTENSITIC STAINLESS STEEL

A composition and method for the manufacture of products of a precipitation hardenable martensitic stainless steel, the composition of which comprises at least 0.5 % by weight of Cr and at lea st 0.5 % by weight of Mo wherein the sum of Cr, Ni and Fe exceeds 50 %. The method steps include smelting t...

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Bibliographische Detailangaben
Hauptverfasser:	HULTIN STIGENBERG, ANNA, NYSTROM, ANNA-LENA
Format:	Patent
Sprache:	eng ; fre
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 METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A composition and method for the manufacture of products of a precipitation hardenable martensitic stainless steel, the composition of which comprises at least 0.5 % by weight of Cr and at lea st 0.5 % by weight of Mo wherein the sum of Cr, Ni and Fe exceeds 50 %. The method steps include smelting the material into a casting, hot extrusion followed by a number of cold deforming steps so as to obtain at least 50 % martensite and finally an agei ng treatment at 425-525 .degree.C to obtain precipitation of quasicrystalline particles. Such materiel can be used in vehicle components where demands for corrosion resistance, high strength and good toughness are to be satisfied.