Abstract
A 9% Cr ferritic steel weld metal containing 1% Co, partially substituted for nickel, was prepared by submerged arc welding (SAW) processing. The microstructure and creep properties of the weld metal were investigated. The microstructure exhibited a fully tempered martensitic structure free of δ-ferrite. The creep properties of the obtained weld metal were inferior to those of the P92 base metal at 600 and 650 °C. The values of A and n for weld metal in the Norton power law constitution at 650 °C are 1.1×10−21 and 8.1, respectively.
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Project (No. 51074113) supported by the National Natural Science Foundation of China
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Wang, X., Zhan, Lf., Pan, Qg. et al. Microstructure and creep properties of high Cr resisting weld metal alloyed with Co. J. Zhejiang Univ. Sci. A 11, 756–760 (2010). https://doi.org/10.1631/jzus.A1000215
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DOI: https://doi.org/10.1631/jzus.A1000215