Vu The Ha Jung, Woo Sang 2024-01-20T16:04:40Z 2024-01-20T16:04:40Z 2021-09-05 2011-10 1598-9623 https://pubs.kist.re.kr/handle/201004/129943 A high nitrogen 15Cr-15Ni niobium-stabilized austenitic alloy has been produced and subjected to a special heat treatment consisting of 5 hours of solution treatment at 1270 degrees C followed by hot rolling, quenching and subsequent aging at temperatures of 700 degrees C to 800 degrees C. It was found that fine dispersion of nano-sized thermally stable primary Nb(C,N) precipitates had already formed in the as-cast condition. The particles were presented at all examined stages of the TMT process (as-homogenized, as-solution treated and as-aged conditions). Secondary precipitates Nb(C,N) were densely formed during subsequent aging; these precipitates had sizes of 4 nm to 5 nm. Both the primary and secondary Nb(C,N) particles showed excellent thermal stability within the temperature range of 700 degrees C to 800 degrees C. The creep properties of the studied alloy at 750 degrees C were superior when compared to those of commercial type 347 stainless steel. English KOREAN INST METALS MATERIALS CREEP CAVITATION Niobium Carbo-Nitride Precipitation Behavior in a High Nitrogen 15Cr-15Ni Heat Resistant Austenitic Stainless Steel Article 10.1007/s12540-011-1003-5 1 METALS AND MATERIALS INTERNATIONAL, v.17, no.5, pp.713 - 720 METALS AND MATERIALS INTERNATIONAL 17 5 713 720 scie scopus kci ART001609224 000300571900003 2-s2.0-84856256245 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article CREEP CAVITATION niobium carbo-nitride precipitation 15Cr-15Ni creep aging