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AbstractAbstract
[en] Grain boundary precipitation treatment was studied for the purpose of improving high temperature low cycle fatigue strength of a Ni-23% Cr-18% W alloy. SSS113M which had been developed as an intermediate heat exchanger material of VHTR and recognized as the best alloy in the national research project concerning nuclear steelmaking in Japan. Conventional single solid solution treatment of 13000C x 1h W.Q. does not cause any massive grain boundary precipitation in SSS113M, but additional heat treatment of 12500C x 1h W.Q. causes discontinuous grain boundary precipitation of α.W phase. This grain boundary precipitation treatment results in two- to fivefold increase of low cycle fatigue strength at 8000C as well as slightly higher creep and stress rupture strength at 10000C
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Brookhaven National Lab., Upton, NY (USA); p. 469-478; 1982; p. 469-478; 3. Japan/US HTGR safety technology seminar; Upton, NY (USA); 2-3 Jun 1982; Available from NTIS, PC A18/MF A01; 1 - GPO as DE84000513
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Report
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Conference
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ALLOYS, CARBON ADDITIONS, CHROMIUM ALLOYS, CRYSTAL STRUCTURE, DISPERSIONS, ENRICHED URANIUM REACTORS, EXPERIMENTAL REACTORS, FAILURES, GAS COOLED REACTORS, GRAPHITE MODERATED REACTORS, HELIUM COOLED REACTORS, HIGH ALLOY STEELS, HOMOGENEOUS MIXTURES, HTGR TYPE REACTORS, IRON ALLOYS, IRON BASE ALLOYS, MATERIALS, MECHANICAL PROPERTIES, MECHANICS, MICROSTRUCTURE, MIXTURES, NICKEL ALLOYS, POWER REACTORS, REACTORS, RESEARCH AND TEST REACTORS, SEPARATION PROCESSES, SOLUTIONS, STAINLESS STEELS, STEELS, TESTING, THERMAL REACTORS
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