Interfacial Interactions Between Inclusions Comprising TiO2 or TiN and the Mold Flux During the Casting of Titanium-Stabilized Stainless Steel

Zhou, Lejun; Pan, Zihang; Wang, Wanlin; Chen, Junyu; Xue, Liwen; Zhang, Tongsheng; Zhang, Lei

doi:10.1007/s11663-019-01746-2

Cited by 12 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The details of the SHTT apparatus and the melting test procedure have been described in previous articles. [26][27][28][29][30]…”

Section: Sessile Drop Testmentioning

confidence: 99%

“…The continuous attenuation of contact angle at the high temperatures is mainly caused by the interfacial reaction occurs at the flux droplet/substrate interface, besides the influence of temperature. The thermodynamic calculations of the possible interfacial reactions have been conducted in previous paper, 30) in which TiN can react with SiO 2 and oxygen inside the mold flux through Reactions ( 1) and (2). The migrations of elements and charges during the chemical reactions may lower the interfacial tension and enhance the wettability of molten flux versus TiN substrate.…”

Section: Effect Of B 2 O 3 On the Interfacial Wettabilitymentioning

confidence: 99%

See 1 more Smart Citation

Optimization of the Interfacial Properties between Mold Flux and TiN Substrate Through the Regulation of B2O3

et al. 2020

Self Cite

View full text Add to dashboard Cite

Titanium nitride (TiN) inclusions are easy to precipitate in the high temperature processing of titanium alloying steels, which tends to introduce numerous surface defects on the final continuous casting slabs. This study utilizes B 2 O 3 to regulate the interfacial properties between the designed mold fluxes and TiN, with the aim to resolve above problems. The results show that the spreading behavior of the mold flux on the TiN substrate is enhanced, and the interfacial contact angle starts to drop at a lower temperature (from 1 473 K for Sample 1 to 1 343 K for Sample 4) with the addition of 0-9 wt.% B 2 O 3 , as the melting behavior of the designed mold fluxes has been improved. The interfacial reactions between the TiN substrate and molten fluxes are also promoted with the addition of B 2 O 3 , where more bubbles are observed in the tested mold fluxes samples. For Sample 1 without B 2 O 3 , quite a few TiN particles couldn't be dissolved and remains in the matrix phase, where the major formed phase is perovskite (CaTiO 3 ) that would deteriorate the high temperature properties of mold flux severely. However, most TiN particles have been dissolved in the optimized mold fluxes, as major of them have reacted with mold fluxes, resulted in the more generation of titanium oxides phase in the samples. In addition, the calculated phase diagram of CaO-SiO 2 -TiO 2 slag system under different B 2 O 3 contents indicates that the formation and precipitation of CaTiO 3 can be effectively inhibited by the addition of B 2 O 3 .

show abstract

“…The details of the SHTT apparatus and the melting test procedure have been described in previous articles. [26][27][28][29][30]…”

Section: Sessile Drop Testmentioning

confidence: 99%

Section: Effect Of B 2 O 3 On the Interfacial Wettabilitymentioning

confidence: 99%

Optimization of the Interfacial Properties between Mold Flux and TiN Substrate Through the Regulation of B2O3

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, TiN has good thermodynamic precipitation conditions for high Ti-bearing steel, and minute-sized TiN formed during solidification of stainless steel effectively enlarge equiaxed grain zone and fine grain size of delta ferrite during solidification caused by their small lattice misfit [6][7][8]. However, Large-sized TiN precipitated before continuous casting can float up to the steel-slag interface and then work with Ti, Al in the molten steel to generate competitive reactions with the mold flux, resulting in problems like 'mold lump' and deterioration of mold flux [9][10][11][12][13]. Additionally, an excessive amount of oxide inclusions is inevitable because of aluminum deoxidation and titanium alloying, whereafter causes more severe clogging of the submerged entry nozzle (SEN) than Ti-free steel, which is harmful both to process efficiency and to product quality [14].…”

Section: Introductionmentioning

confidence: 99%

Evolution mechanism of inclusions during refining and continuous casting process of 321H stainless steel

Chen

Chen³

et al. 2023

Ironmaking & Steelmaking

View full text Add to dashboard Cite

The evolution of inclusions during the refining and casting process was investigated on an industrial scale to clarify the quantity and distribution of non-metallic inclusions for 321H stainless steel. The analyses showed that Al 2 O 3 -SiO 2 -MnO-CaO and Al 2 O 3 as the main types of inclusions at the late of AOD and VOD, respectively. Pure titanium nitride and titanium nitride with oxide as the nuclei dominated the inclusions at the late of LF. The types of inclusions in mold and slab were similar to those obtained at the late of LF, while titanium nitride inclusions in slab were higher in numbers and larger in size. The titanium nitride inclusions precipitating with MgO-Al 2 O 3 -CaO-(TiO 2 ) nuclei showed a higher number density and area fraction than other oxide inclusions. The calcium treatment of molten steel was optimized by FactSage software and it was necessary to accurately control the calcium content in molten steel before titanium addition.

show abstract

In Situ Method to Study the Dissolution of Ti(C,N) Inclusion in Molten Mold Flux

Zhang,

Wang,

Zhang

et al. 2024

The Minerals, Metals &Amp; Materials Series

View full text Add to dashboard Cite

Interfacial Interactions Between Inclusions Comprising TiO2 or TiN and the Mold Flux During the Casting of Titanium-Stabilized Stainless Steel

Cited by 12 publications

References 23 publications

Optimization of the Interfacial Properties between Mold Flux and TiN Substrate Through the Regulation of B<sub>2</sub>O<sub>3</sub>

Optimization of the Interfacial Properties between Mold Flux and TiN Substrate Through the Regulation of B<sub>2</sub>O<sub>3</sub>

Evolution mechanism of inclusions during refining and continuous casting process of 321H stainless steel

In Situ Method to Study the Dissolution of Ti(C,N) Inclusion in Molten Mold Flux

Contact Info

Product

Resources

About