PRODUCTION OF NONMAGNETIC STEEL SHEET FOR CONSTRUCTING SUPERCONDUCTIVE MAGNET FOR NUCLEAR FISSION REACTOR

PURPOSE:To obtain a steel plate having >=1,200MPa yield strength, >=100J Charpy absorption energy and >=150MPasq. rt. m breaking toughness value (K1C) at the temp. of liquid He and having small variance in the mechanical properties in the thickness direction by specifying the content compon...

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Hauptverfasser:	TONE SHIYOUJI, NAKAJIMA HIDEO, SHIMAMOTO SUSUMU, OGAWA RIKUROU, HIROMATSU MUTSUO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS FUSION REACTORS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INDUCTANCES MAGNETS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NUCLEAR ENGINEERING NUCLEAR PHYSICS PHYSICS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a steel plate having >=1,200MPa yield strength, >=100J Charpy absorption energy and >=150MPasq. rt. m breaking toughness value (K1C) at the temp. of liquid He and having small variance in the mechanical properties in the thickness direction by specifying the content components and component ratios of a steel and specifying the sheet thickness rolling and finishing temp. as well as cooling conditions after rolling to prescribed conditions. CONSTITUTION:A steel ingot is composed, by wt%, of 0.01-0.1 C, 0.01-1 Si, 16-30 Mn, =800 deg.C or air cooling, the billet is water-cooled down to