Lee, Kyu-Ho Hong, Sung-Min Shim, Jae-Hyeok Suh, Jin-Yoo Huh, Joo-Youl Jung, Woo-Sang 2024-01-20T07:30:50Z 2024-01-20T07:30:50Z 2021-09-05 2015-04 1044-5803 https://pubs.kist.re.kr/handle/201004/125587 The effect of Nb addition on the creep strength of high-Cr martensitic heat-resistant steel was investigated at temperatures ranging from 839 to 894K. The short-term creep properties were improved by Nb addition due to the enhanced MX precipitation. However, Nb addition deteriorated the steel's long-term stability resulting in an even shorter creep-rupture life than the original alloy. Onset of the accelerated degradation in Nb-containing steel was attributed to the gradual formation of Z-phase at the expense of M2N precipitates during creep exposure. (C) 2015 Elsevier Inc. All rights reserved. English ELSEVIER SCIENCE INC MICROSTRUCTURAL EVOLUTION DEFORMATION TEMPERATURE Effect of Nb addition on Z-phase formation and creep strength in high-Cr martensitic heat-resistant steels Article 10.1016/j.matchar.2014.12.028 1 MATERIALS CHARACTERIZATION, v.102, pp.79 - 84 MATERIALS CHARACTERIZATION 102 79 84 scie scopus 000355335200010 2-s2.0-84930003451 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science, Characterization & Testing Materials Science Metallurgy & Metallurgical Engineering Article MICROSTRUCTURAL EVOLUTION DEFORMATION TEMPERATURE Heat-resistant steels Creep strength Precipitation Z-phase XRD