Evolution of Inclusions after Cerium and Titanium Addition in Aluminum Deoxidized Fe-17Cr-9Ni Austenitic Stainless Steel

Pan, Chao; Hu, Xiaojun; Lin, Ping; Chou, Kuo‐Chih

doi:10.2355/isijinternational.isijint-2020-028

Cited by 21 publications

(18 citation statements)

References 28 publications

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“…This MATLAB tool fits, especially for samples with clearly separated areas of the traced multiphase NMIs, such as Sample 6 or industrial samples, since rare earth elements tend to segregate and modify existing deoxidation products after a sufficient reaction time. [20,36]…”

Section: Optimization Of Evaluation Regarding Re-traced Nmismentioning

confidence: 99%

Optimization of the Two‐ and Three‐Dimensional Characterization of Rare Earth‐Traced Deoxidation Products

et al. 2023

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Tracing by means of the light rare earths (REs), particularly La and Ce, is a state‐of‐the‐art method used to track deoxidation products during the steelmaking process. Traced heterogeneous multiphase inclusions are analyzed using scanning electron microscopy with energy‐dispersive spectroscopy (SEM/EDS) to perform a 2D characterization. The sequential chemical extraction technique is implemented for a 3D investigation to determine traced particles’ actual sizes and shapes. The automated SEM/EDS measurement must be optimized since RE oxides appear brighter in the backscattered electron images due to their high atomic numbers. Therefore, two grayscales are implemented for the detection of RE‐containing multiphase inclusions. Within this technique, individual RE‐traced heterogeneous nonmetallic inclusions (NMIs) are counted as separate particles. Thus, the measured NMIs must be recombined, which is achieved using a self‐developed MATLAB tool. The extracted particles are also analyzed by automated and manual SEM/EDS measurements to determine the 3D morphologies and sizes of traced NMIs.

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Section: Optimization Of Evaluation Regarding Re-traced Nmismentioning

confidence: 99%

Optimization of the Two‐ and Three‐Dimensional Characterization of Rare Earth‐Traced Deoxidation Products

et al. 2023

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“…A number of studies found that TiN can grow on the surface of the oxide and form oxide-core complex TiN inclusions. Some researchers [15][16][17] found that single MgO and Al 2 O 3 can be acted as nucleation core of TiN inclusions, and some researchers 18,19) found that MgAl 2 O 4 can be the nucleation core of TiN inclusions. Fujimura et al 20) clarified that Mg-Al-Ti-O oxide can be the nucleation core of TiN inclusions.…”

Section: Characteristics and Formation Mechanism Of Complex Tin Inclu...mentioning

confidence: 99%

Characteristics and Formation Mechanism of Complex TiN Inclusions in 20CrMnTi Gear Steel

Cheng

et al. 2022

ISIJ Int.

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“…A contradictory formation mechanism has been found for nitride inclusions than for Al 2 O 3 inclusion. Some researchers have reported the formation of TiN initiated in molten steel during smelting, [11,17,28] whereas others reported that TiN mainly precipitated in the mushy zone during the solidification process. [29,30] Li et al [31] reported that the Ti content had a larger effect than the N content on the size of TiN inclusion formed in bearing steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti Addition on Non‐Metallic Inclusion Characteristics in TRIP Steel

Zhu

Sun

et al. 2022

steel research int.

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Herein, the effect of Ti addition on the formation and evolution of inclusions in high‐Al transformation‐induced plasticity (TRIP) steel is investigated by performing a series of laboratory experiments and thermodynamic calculations for different quantities and sequences of Ti addition. Before the addition of Al and Ti, the main inclusions are spherical Mn–Si–Al–O oxide particles. The addition of Al transforms the Mn–Si–Al–O inclusions to Al2O3 inclusion. After the subsequent addition of 0.02 wt% Ti, the main inclusions are Al2O3, AlN, Al2O3–AlN, Al2O3–TiN, and Al2O3–AlN–TiN. However, after the subsequent addition of 0.05 or 0.12 wt% Ti to molten steel, the main inclusions are Al2O3, TiN, and Al2O3–TiN, and almost no AlN is observed. Using different addition sequences of Al and Ti to high‐Al TRIP steel does not result in significant differences in the types of inclusions. Adding Ti to molten steel does not transform Al2O3 to Ti‐oxides, whereas Al addition causes Ti‐oxides to be transformed to Al2O3. Importantly, adding over 0.05 wt% Ti to TRIP steel prevents the formation of AlN inclusion.

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Evolution of Inclusions after Cerium and Titanium Addition in Aluminum Deoxidized Fe-17Cr-9Ni Austenitic Stainless Steel

Cited by 21 publications

References 28 publications

Optimization of the Two‐ and Three‐Dimensional Characterization of Rare Earth‐Traced Deoxidation Products

Optimization of the Two‐ and Three‐Dimensional Characterization of Rare Earth‐Traced Deoxidation Products

Characteristics and Formation Mechanism of Complex TiN Inclusions in 20CrMnTi Gear Steel

Effect of Ti Addition on Non‐Metallic Inclusion Characteristics in TRIP Steel

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