Lee, Kyu-Ho Suh, Jin-Yoo Hong, Sung-Min Huh, Joo-Youl Jung, Woo-Sang 2024-01-20T06:32:11Z 2024-01-20T06:32:11Z 2021-09-05 2015-08 1044-5803 https://pubs.kist.re.kr/handle/201004/125169 The creep behavior of high-Cr martensitic heat-resistant steels was investigated to discuss the dominant factors determining the creep-rupture life in the temperature range from 839 to 894 K. Variation in the content of Nb, a carbide former, induced a difference in creep-degradation at the long-term creep condition, which was attributed to the formation of a Z-phase at the expense of M2N precipitates. Due to the continuous evolution of the microstructure during creep service, a simple form of the Monkman-Grant equation could not properly describe the creep-rupture life of the alloys; however, the modified Monkman-Grant equation, which incorporates the creep rate at the tertiary creep region, resulted in a reasonable estimation of creep-rupture life. (C) 2015 Elsevier Inc. All rights reserved. English ELSEVIER SCIENCE INC ADVANCED FERRITIC STEELS Z-PHASE FORMATION DEFORMATION STRENGTH P92 Microstructural evolution and creep-rupture life estimation of high-Cr martensitic heat-resistant steels Article 10.1016/j.matchar.2015.06.005 1 MATERIALS CHARACTERIZATION, v.106, pp.266 - 272 MATERIALS CHARACTERIZATION 106 266 272 scie scopus 000360417200031 2-s2.0-84935016342 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science, Characterization & Testing Materials Science Metallurgy & Metallurgical Engineering Article ADVANCED FERRITIC STEELS Z-PHASE FORMATION DEFORMATION STRENGTH P92 Heat-resistant steels Precipitation Z-phase Creep-rupture life Monkman-Grant equation