Park, Dae-Bum Huh, Moo-Young Jung, Woo-Sang Suh, Jin-Yoo Shim, Jae-Hyeok Lee, Seung-Cheol 2024-01-20T11:30:17Z 2024-01-20T11:30:17Z 2021-09-05 2013-10-15 0925-8388 https://pubs.kist.re.kr/handle/201004/127544 The effect of vanadium addition on the creep property of niobium-containing 18Cr-9Ni austenitic heat-resistant steel was studied. After solution treatment, the MX precipitates of vanadium-free steel contained Nb only. On the contrary, high Nb and low V contents were detected from the MX precipitates in the steel with 0.3 wt% of vanadium. Vanadium-rich MX carbo-nitride was not observed in the matrix and at the grain boundaries after solution treatment. The vanadium precipitated as a form of Z-phase during early-stage creep deformation was attributed to the improvement in creep strength at 700 degrees C with applied stress higher than 150 MPa. And metallic Cu precipitates were confirmed in the nanometer scale using TEM and EDS technique. The Cu precipitates are believed to contribute to the strengthening of austenitic heat resistant steel independently. The precipitation behavior is discussed using transmission electron microscopy and thermo-kinetics simulation technique. (C) 2013 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA Z-PHASE-FORMATION LONG-TERM CREEP HIGH-TEMPERATURES POWER-PLANTS CARBONITRIDE EVOLUTION STRENGTH KINETICS SYSTEMS Effect of vanadium addition on the creep resistance of 18Cr9Ni3CuNbN austenitic stainless heat resistant steel Article 10.1016/j.jallcom.2013.05.106 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.574, pp.532 - 538 JOURNAL OF ALLOYS AND COMPOUNDS 574 532 538 scie scopus 000321749600086 2-s2.0-84879235922 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article Z-PHASE-FORMATION LONG-TERM CREEP HIGH-TEMPERATURES POWER-PLANTS CARBONITRIDE EVOLUTION STRENGTH KINETICS SYSTEMS Austenitic stainless steel Z-phase Creep strength