Kim, Myung-Yeon Kwak, Suk-Chul Choi, In-Suk Lee, Young-Kook Suh, Jin-Yoo Fleury, Eric Jung, Woo-Sang Son, Tae-Ha 2024-01-20T08:33:24Z 2024-01-20T08:33:24Z 2021-09-02 2014-11 1044-5803 https://pubs.kist.re.kr/handle/201004/126215 The high-temperature mechanical behavior of cross-weld specimens prepared from a dissimilar weld joint between T92 martensitic and Super304H austenitic heat-resistant steels incorporating Ni-based weld metal was evaluated at temperatures up to 650 degrees C. For both high temperature tensile and creep tests, failure took place in T92 due to its faster degradation with temperature increase. The heat-affected zone of T92 played a critical role during creep deformation, resulting in type IV failure under the long-term creep condition. For the creep specimens, the location of failure shifted from the base metal region to the fine-grained heat-affected zone as the creep duration time increased from the short-term to the long-term condition. The massive precipitation of Laves phase on the grain boundaries of the fine-grained heat-affected zone during creep deformation was observed and found to be responsible for the accelerated void formation in the area leading to the premature failure. (C) 2014 Elsevier Inc. All rights reserved. English ELSEVIER SCIENCE INC HEAT-RESISTANT STEEL DAMAGE MICROSTRUCTURE BEHAVIOR CRACKING PHASE High-temperature tensile and creep deformation of cross-weld specimens of weld joint between T92 martensitic and Super304H austenitic steels Article 10.1016/j.matchar.2014.09.011 1 MATERIALS CHARACTERIZATION, v.97, pp.161 - 168 MATERIALS CHARACTERIZATION 97 161 168 scie scopus 000345108600018 2-s2.0-84908384383 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science, Characterization & Testing Materials Science Metallurgy & Metallurgical Engineering Article HEAT-RESISTANT STEEL DAMAGE MICROSTRUCTURE BEHAVIOR CRACKING PHASE Heat-resistant steel Welding Heat-affected zone Hardness measurement Laves phase Electron microscopy