Microstructural Stability of Dissimilar Weld Joint of Creep-Resistant Steels with Increased Nitrogen Content at 500 – 900 °C |
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| Journal | Defect and Diffusion Forum (Volume 263) |
|---|---|
| Volume | Diffusion and Thermodynamics of Materials |
| Edited by | J. Čermák and I. Stloukal |
| Pages | 195-200 |
| DOI | 10.4028/www.scientific.net/DDF.263.195 |
| Citation | Bronislav Zlámal et al., 2007, Defect and Diffusion Forum, 263, 195 |
| Online since | March, 2007 |
| Authors | Bronislav Zlámal, Rudolf Foret, Jiří Buršík, Milan Svoboda |
| Keywords | Carbon/Nitrogen Depleted Zone, Carbon/Nitrogen Enriched Zone, Creep Resistant Steel, Modeling, Redistribution, Structural Analysis, Weld Joint |
| Abstract | The structural changes taking place in the dissimilar laboratory welds of 6CrMoV 8-3-2 (T25), being under development, and modified X12CrMoVNb 10-1 (P91) nitrided steels annealed at temperatures of 500 – 900 °C have been subject of study. Carbon and nitrogen redistribution measurement by the EPMA method was complemented with detailed structural analysis aimed at the phase profiles and chemical composition of coexisting carbides and carbonitrides in particular regions of the weld joint. Results of experimental work were compared with thermodynamic and kinetic modeling using the DICTRA software. A very good agreement between the modeling and the experiments was observed. |
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