Park, Dae-Bum Hong, Sung-Min Lee, Kyu-Ho Huh, Moo-Young Suh, Jin-Yoo Lee, Seung-Cheol Jung, Woo-Sang 2024-01-20T09:31:38Z 2024-01-20T09:31:38Z 2021-09-05 2014-07 1044-5803 https://pubs.kist.re.kr/handle/201004/126620 The creep properties of an 18Cr9Ni3CuNbVN austenitic stainless steel have been investigated at temperatures ranging from 923 to 1073 K and stresses from 120 to 250 MPa. The rupture lives ranged from 10 to 20,105 h. The stress dependence of the minimum creep rate obeyed a power law, with stress exponents ranging from 6 to 8.6. The activation energy was determined to be 460 to 485 kJ/mol/K. The microstructural evolution during the creep test was investigated. The V-rich Z-phase and metallic Cu precipitates began to precipitate in the middle of the creep deformation, resulting in an increase of the creep strength, while only Nb-based MX precipitates were present from the beginning of the high-temperature creep test. (C) 2014 Elsevier Inc. All rights reserved. English ELSEVIER SCIENCE INC Z-PHASE-FORMATION LONG-TERM CREEP ADVANCED FERRITIC STEELS 9-12-PERCENT CR-STEELS HEAT-RESISTANT STEELS USC POWER-PLANTS DEFORMATION NITROGEN STRESS NUCLEATION High-temperature creep behavior and microstructural evolution of an 18Cr9Ni3CuNbVN austenitic stainless steel Article 10.1016/j.matchar.2014.03.012 1 MATERIALS CHARACTERIZATION, v.93, pp.52 - 61 MATERIALS CHARACTERIZATION 93 52 61 scie scopus 000337863600006 2-s2.0-84898983480 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science, Characterization & Testing Materials Science Metallurgy & Metallurgical Engineering Article Z-PHASE-FORMATION LONG-TERM CREEP ADVANCED FERRITIC STEELS 9-12-PERCENT CR-STEELS HEAT-RESISTANT STEELS USC POWER-PLANTS DEFORMATION NITROGEN STRESS NUCLEATION Austenitic stainless steel Creep strength Z-phase Cu precipitates