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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 8/2011

01.11.2011

Analysis of the Creep Behavior of P92 Steel Welded Joint

verfasst von: Junchao An, Hongyang Jing, Guangchun Xiao, Lei Zhao, Lianyong Xu

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 8/2011

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Abstract

Different regions of heat-affected zone (HAZ) were simulated by heat treatment to investigate the mechanisms of the Type IV fracture of P92 (9Cr-2W) steel weldments. Creep deformation of simulated HAZ specimens with uniform microstructures was investigated and compared with those of the base metal (BM) and the weld metal (WM) specimens. The results show that the creep strain rate of the fine-grained HAZ (FGHAZ) is much higher than that of the BM, WM, the coarse-grained HAZ (CGHAZ), and the inter-critical HAZ (ICHAZ). According to the metallurgical investigation of stress-rupture, the FGHAZ and the ICHAZ have the most severely cavitated zones. During creep process, carbides become coarser, and form on grain boundaries again, leading to the deterioration of creep property and the decline of creep strength. In addition, the crack grows along the FGHAZ adjacent to the BM in the creep crack growth test (CCG) of HAZ.
Vorheriger Artikel The Optimization of Interlamellar Spacing in a Nanopearlitic Lead-Patented Hypoeutectoid Steel Wire
Nächster Artikel Influence of Cooling Rate on Transformation Behavior of 0.15% V Microalloyed Steel

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Metadaten
Titel
Analysis of the Creep Behavior of P92 Steel Welded Joint
verfasst von
Junchao An
Hongyang Jing
Guangchun Xiao
Lei Zhao
Lianyong Xu
Publikationsdatum
01.11.2011
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 8/2011
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-010-9779-x

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