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Investigation of Selective Oxidation and Reaction Wetting of Q&P Steel Under Different Dew Point During Continuous Galvanizing
The effect of different dew points (−30 °C/− 10 °C) on the reactive wetting and selective oxidation of alloying elements of quenching and partitioning steel during continuous galvanizing was investigated. Morphology of the inhibition layer, the type of surface oxides and the variation of surface all...
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Published in: | Transactions of the Indian Institute of Metals 2021-02, Vol.74 (2), p.235-242 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The effect of different dew points (−30 °C/− 10 °C) on the reactive wetting and selective oxidation of alloying elements of quenching and partitioning steel during continuous galvanizing was investigated. Morphology of the inhibition layer, the type of surface oxides and the variation of surface alloying elements concentration after galvanizing were all characterized. The results indicated that the enrichment of Si and Mn on the surface is lower after annealing at higher dew point, forming a more compact inhibition layer with a higher aluminum interior. Finally, better wettability of the steel during galvanizing and less leakage plating has been obtained. With the increase in dew point from −30 to −10 °C, the transformation of Si and Mn from outer oxidation to inner oxidation has occurred at 32 nm and 29 nm below the surface, respectively. Meanwhile, the oxidation depth becomes deeper. |
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ISSN: | 0972-2815 0975-1645 |
DOI: | 10.1007/s12666-020-02141-1 |