The effect of yttrium addition on the chemical composition of the non-metallic phase in liquid steel

Gerasin, S.; Kalisz, D.; Żak, P. L.; Kuglin, K.; Iwanciw, J.

doi:10.1088/1757-899x/461/1/012093

Cited by 2 publications

(3 citation statements)

References 5 publications

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“…The option to choose a calculation model has also been introduced. Preliminary results of calculations have been published in the conference paper [18]. At the first stage calculations were made for the non-metallic phase formation for basic systems Fe-O-S-Al-Y and Fe-O-S-Al-Y-Ca.…”

Section: Results Of Calculationsmentioning

confidence: 99%

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Thermodynamic and kinetic simulation of Y2O3 and Y2S3 nonmetallic phase formation in liquid steel

Gerasin

Kalisz

Iwanciw³

2020

J min metall B Metall

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The current work deals with the phenomenon of non-metallic inclusions as a result of the addition of yttrium to the liquid steel as an alloying component. The order of introducing individual components determines their final content in steel, and this problem was analyzed using the WYK_Stal program developed at AGH. The study of Y 2 O 3 and Y 2 S 3 phase precipitation and the relationship between the addition of Y, Al, Ca, O, and S in molten steel was studied using the thermodynamic models based on Wagner's formalism. The introductions of yttrium prior to aluminum brought about huge losses, and it mainly occurred due to the formation of oxides. The low oxygen content in the metal bath promotes the formation of yttrium sulphide. When yttrium is introduced after aluminum and calcium, yttrium is used for the precipitation of its sulfide, and in this way the manganese sulfide formation is reduced.

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Section: Results Of Calculationsmentioning

confidence: 99%

“…The last option was used for checking out the behavior of the system in given conditions and for given reagents (21 components). The thermodynamic equilibrium was calculated with modules TLEN_PRO.EXE and TN_S_PRO.EXE [13][14][15][17][18].…”

Section: Computer Program To Simulation the Refining Process And Intrmentioning

confidence: 99%

Thermodynamic and kinetic simulation of Y2O3 and Y2S3 nonmetallic phase formation in liquid steel

Gerasin

Kalisz

Iwanciw³

2020

J min metall B Metall

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“…The addition of rare earth elements in steel will form rare earth compounds containing sulfur and oxygen. Four inclusions of Y 2 O 3 , Y 2 O 2 S, Y 2 S 3 , and YS may be formed after the addition of rare earth in grain-oriented silicon steel [31][32][33]. To analyze the formation and change of rare earth inclusions in the test steel, the thermodynamic calculation is used to analyze and discuss them.…”

Section: Thermodynamic Analysis Of Rare Earth Inclusionsmentioning

confidence: 99%

Effect of Rare Earth Yttrium on Inclusion Characteristics of Grain-Oriented Silicon Steel

Guo,

Li,

Liu

et al. 2023

Crystals

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To investigate the influence of heavy rare earth element yttrium on the type, morphology, and quantity distribution of inclusions in grain-oriented silicon steel, thermodynamic calculation was carried out on the typical rare earth inclusions in grain-oriented silicon steel containing yttrium. The main inclusions in the experimental steels with and without yttrium were observed and analyzed using field emission scanning electron microscope (FESEM, Zeiss Gemini SEM 300) and energy dispersive spectrometer (EDS, OXFORD Ultim Extreme). The electron backscatter diffraction (EBSD, OXFORD Symmetry) was used to analyze the local average misorientation of the hot-rolled plate. The results show that the inclusions in the Y-free steel are mainly long MnS, irregular Al2O3 and MnS-Al2O3. The inclusions in the Y-bearing steel are spherical rare earth compounds. The number of inclusions in Y-bearing steel decreases and the size increases compared with Y-free steel. The mean value of local average misorientation and the dislocation density of Y-bearing steel are smaller compared with Y-free steel, which could avoid the cracking problem caused by dislocation accumulation during hot rolling. After heating the rough-rolling sample to 1350 °C, there is no obvious difference in the inclusions type between the Y-free steel and Y-bearing steel. However, the area fraction of inclusions in Y bearing steel increases slightly. According to the thermodynamic calculation results, there are mainly three kinds of rare earth inclusions, YS, Y2S3 and Y2O2S, in Y-bearing steel, among which YS has the strongest stability and the stability of Y2O2S is the weakest. The rare earth element yttrium can effectively modify the inclusions, transforming the irregular Al2O3 inclusions, formed during the deoxidation of silicon steel into spherical rare earth inclusions, which suppress the precipitation of long MnS inclusions. Thus, the formability of the steel could be improved.

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The effect of yttrium addition on the chemical composition of the non-metallic phase in liquid steel

Cited by 2 publications

References 5 publications

Thermodynamic and kinetic simulation of Y2O3 and Y2S3 nonmetallic phase formation in liquid steel

Thermodynamic and kinetic simulation of Y2O3 and Y2S3 nonmetallic phase formation in liquid steel

Effect of Rare Earth Yttrium on Inclusion Characteristics of Grain-Oriented Silicon Steel

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