Deoxidation Equilibria of Manganese, Silicon, and Aluminum in Iron-Nickel-Chromium Melts

Dashevskii, V. Ya.; Александров, А. А.; Kanevskii, A. G.; Леонтьев, Л. И.

doi:10.1007/s11663-016-0609-x

Cited by 4 publications

(2 citation statements)

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“…) .............. (5) This reaction indicates that the MgO crucible is reduced by Al in molten steel to form Mg. As shown in Fig. 8(A11), in addition to the dissolution of Mg, a MgO•Al 2 O 3 spinel reaction interface transition layer with a high melting point is observed at the interface between molten steel and MgO crucible.…”

Section: Reaction Of Mgo Crucible With Al-deoxidizedmentioning

confidence: 96%

“…1,2) The deoxidation process is crucial for controlling the O content and inclusion type in high-quality steel. [3][4][5][6][7][8][9] Owing to its strong affinity for O and its availability, Al is commonly used as a deoxidizing agent during the steelmaking process. Therefore, several studies have been conducted on the Al deoxidation equilibrium in molten Fe-Cr and Fe-Cr-Ni alloys.…”

Section: Introductionmentioning

confidence: 99%

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Inclusion Control of 15-5 PH High-strength Stainless Steel through Aluminum Deoxidation

et al. 2023

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15-5PH high-strength stainless steel is an important alloy used for numerous critical components. Ultralow oxygen content and inclusion control have become urgent problems that need to be addressed for the broad application of this steel. In this study, we investigate the thermodynamic equilibrium of Al-O and inclusion morphology of 15-5PH stainless steel to understand the basic mechanism behind the results obtained after commercial production of the alloy. The deoxidation behavior of 15-5PH stainless steel depends on the dissolved Al content ([Al%]). When [Al%] < 0.001%, mixed Al-Si deoxidation occurs and the deoxidation product is Al 2 O 3 -SiO 2 -MnO-CrO x . When [Al%] ≥ 0.001%, simple Al deoxidation equilibrium is dominant and the deoxidation product is MgO•Al 2 O 3 . The formation of Al 2 O 3 -SiO 2 -MnO-CrO x , low melting point inclusions, and a MgO•Al 2 O 3 interface layer reduces the activity of Al 2 O 3 , which is why the calculated results of Al-O thermodynamic equilibrium are higher than the experimental results. The measured results for the Al-O equilibrium demonstrate a relatively good agreement with the calculated values. This proved that the phases formed on the crucible surfaces were in equilibrium with the Al and O contents in the molten steels after holding for 120 min.

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Section: Reaction Of Mgo Crucible With Al-deoxidizedmentioning

confidence: 96%