Abstract
To improve the oxidation resistance of a remelted zone in Al2O3-forming austenitic stainless steels, effects of annealing temperature on microstructural evolution and Al2O3 formation in remelted zone of Fe–25Ni–10Cr–5Al–1Nb–Y steel (wt%) were investigated. The results showed that a continuous Al2O3 film could not form in the remelted zone before annealing. After annealing at 1,100, 1,150 and 1,180 °C, a continuous Al2O3 film formed. The existence of a second phase containing Al is the key for the formation of a continuous Al2O3 film. The thickness of Al2O3 film increased with the rise in Al content in the second phase.
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The authors would like to thank financial support from the National Natural Science Foundation of China (Nos. 51271128 and 51171123) and the Natural Science Foundation for Young Scientists of Sichuan Province in China (No. 2010A01-436).
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Zhao, K., Peng, H., Yang, X. et al. Improvement of Oxidation Resistance of Remelted Zone in an Al2O3-Forming Austenitic Stainless Steel by Annealing. Oxid Met 83, 273–290 (2015). https://doi.org/10.1007/s11085-014-9520-5
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DOI: https://doi.org/10.1007/s11085-014-9520-5