DISPERSION STRENGTHENED AUSTENITIC STAINLESS STEEL, METHOD FOR MANUFACTURING STAINLESS STEEL AND PRODUCT MADE FROM STAINLESS STEEL

An objective of the invention is to provide an austenitic stainless steel article having superior irradiation resistance and stress corrosion cracking resistance than before while maintaining mechanical properties equivalent to those of conventional ones. There is provided a dispersion strengthened...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIZAKI Takahiro, MARUNO Yusaku
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CASTING 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 MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR POWER PLANT NUCLEAR REACTORS PERFORMING OPERATIONS PHYSICS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	An objective of the invention is to provide an austenitic stainless steel article having superior irradiation resistance and stress corrosion cracking resistance than before while maintaining mechanical properties equivalent to those of conventional ones. There is provided a dispersion strengthened austenitic stainless steel article, including: 16-26 mass% of Cr; 8-22 mass% of Ni; 0.005-0.08 mass% of C; 0.002-0.1 mass% of N; 0.02-0.4 mass% of 0; at least one of 0.2-2.8 mass% of Zr, 0.4-5 mass% of Ta, and 0.2-2.6 mass% of Ti; and a balance consisting of Fe and inevitable impurities. The Zr, Ta and Ti components form inclusion particles in the stainless steel article by combining with the C, N and 0 components. The stainless steel article has an average grain size of 1 µm or less and a maximum grain size of 5 µm or less.