PRECIPITATION TYPE HIGH-NI ALLOY MEMBER FOR FAST BREEDER AND ITS PRODUCTION

PURPOSE:To produce a titled alloy member having excellent resistance to void swelling and embrittlement by irradiation and excellent strength by subjecting an alloy consisting of specifically composed Cr, Fe, Al, Ti, Nb and Ni to an adequate soln. heat treatment and aging treatment. CONSTITUTION:An...

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Hauptverfasser:	MASAOKA ISAO, KATOU TAKAHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To produce a titled alloy member having excellent resistance to void swelling and embrittlement by irradiation and excellent strength by subjecting an alloy consisting of specifically composed Cr, Fe, Al, Ti, Nb and Ni to an adequate soln. heat treatment and aging treatment. CONSTITUTION:An alloy consisting of 14-25wt.% Cr, =950 deg.C and thereafter the alloy is subjected to an aging treatmet in the temp.-time range shown by the region M of the figure. The precipitation type high-Ni alloy member which has the metallic structure dispersed and precipitated with the matched gamma' precipitation phase Ni3 (Al, Ti) having the positive misfit between the precipitation phase and the base phase in the crystal grains to the state of 80-320Angstrom diameter and 10 -10 m density and is usable in the environment to be exposed to neutron irradiation at >=10 nvt (neutron energy >=0.1MeV) dose in a fast breeder is obtd. by such treatment.