Three-dimensional characterization of typical inclusions in steel by X-ray Micro-CT

Shang, Zhiqiang; Li, Tao; Yang, Shufeng; Yan, Jie; Guo, Han

doi:10.1016/j.jmrt.2020.01.106

Cited by 34 publications

(18 citation statements)

References 24 publications

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“…Yulin ZHU, 1,3) Tao LI, 2) * Guozhang TANG, 2) Yingjian GU 1,4) and Henan CUI 1,3) 1) College of Materials Science and Engineering, Chongqing University, Chongqing, 400044 PR China.…”

Section: Water Model Study On the Flotation Behaviors Of Inclusion Cl...mentioning

confidence: 99%

“…The non-metallic inclusions would destroy the continuity of the metal matrix and reduce the mechanical properties of the products, such as reducing the plasticity, toughness, or fatigue properties of materials. [1][2][3][4] It is a significant task for the metallurgist to remove inclusions as much as possible from the molten metal. Many numerical modeling and experimental works [5][6][7][8][9][10][11] have been performed to investigate the inclusion behaviors by using spherical particles, such as inclusion coagulation, flotation, and bubble adhesion.…”

Section: Introductionmentioning

confidence: 99%

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Water Model Study on the Flotation Behaviors of Inclusion Clusters in Molten Steel

Zhu

Tang

et al. 2022

ISIJ Int.

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“…Yulin ZHU, 1,3) Tao LI, 2) * Guozhang TANG, 2) Yingjian GU 1,4) and Henan CUI 1,3) 1) College of Materials Science and Engineering, Chongqing University, Chongqing, 400044 PR China.…”

Section: Water Model Study On the Flotation Behaviors Of Inclusion Cl...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Model Study on the Flotation Behaviors of Inclusion Clusters in Molten Steel

Zhu

Tang

et al. 2022

ISIJ Int.

Self Cite

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“…The previous research reports have investigated internal defects formation during rolling process to enhance the efficiency of cast products. [11][12][13] The accurate quantitative detection of internal defects including shrinkage porosity, cracks, and inclusion is of great importance to improve the internal quality of cast products by controlling their morphology and size. The traditional 2D characterization using optical microscope (OM) and scanning electron microscope (SEM) cannot reveal the actual 3D morphologies of internal defects.…”

Section: Introductionmentioning

confidence: 99%

“…The previous research reports have investigated internal defects formation during rolling process to enhance the efficiency of cast products. [ 11–13 ]…”

Section: Introductionmentioning

confidence: 99%

Spatial Characterization of Internal Defects in Medium Carbon Steel via X‐Ray Computed Tomography

Ali

Zhang

Sui

et al. 2022

steel research int.

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Herein, the 3D characterization of internal defects in medium carbon steel with different soft reduction (SR) parameters is investigated, as regards its spatial morphology and size distribution using X‐ray computed tomography. The size of defects and their shape complexity increase from the equiaxed toward the center of the ingot, and the total number of defects is larger at the equiaxed region, which exhibits the aggregation and growth of small spherical pores into the large defects from equiaxed toward the center region. The two types of shrinkage defects, including island and net shrinkage, are identified. With the minimum reduction amount of 2 and 4 mm, the number and size of defects along with the carbon macrosegregation in the equiaxed region and center of the ingot are less as compared to the high reduction amount of 6 mm and without SR technology. The size of gas pores with sphericity >0.6 is <70 um with different reduction amounts and exceeds up to 150 um without SR. Therefore, minimum reduction amounts can easily regulate the internal defects in medium carbon steel.

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“…The refractory REM oxides and sulfides of type REM 2 O 3 , REM 2 S 3 are non-metallic inclusions having a spherical shape similar to titanium oxides TiO, TiO 2 , Ti 2 O 3 [ 13 , 14 ]. The oxides and sulfides of REMs have high melting temperatures, °C: La 2 O 3 (2304); Y 2 O 3 (2439); Ce 2 O 3 (2250); ThO 2 (3350); La 2 S 3 (2110); Y 2 S 3 (1925); Ce 2 S 3 (2450); Th 2 S 3 (2300) [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Electrochemical Composite Coatings with LaF3-LaB6 Particles in Nickel–Copper Matrix on the Metallurgical Processes in Arc Welding of Low Alloy Ferrite-Pearlite Steels

et al. 2021

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Development of welding consumables with fluorides and borides of rare earth metals is a promising area for improving the weldability of low alloy steels. As lanthanum fluoride and boride dissociate, lanthanum and boron dissolve in the weld pool and the welding arc plasma is saturated with fluorine. As a result of FeO, MnO, SiO2 deoxidation and FeS, MnS desulfurization, refractory lanthanum sulfides and oxides La2O3, La2S3 are formed in the weld pool, which can be the crystallization nuclei in the weld pool and the origin of acicular ferrite nucleation. The paper proposes a model of metallurgical processes in the arc and weld pool, as well as a model of electrochemical adsorption of Ni2+ cations in colloidal electrolytes during electrostatic deposition of nano-dispersed insoluble particles of LaF3 or LaB6 on the surface of wire. The paper discusses the constructional design of the welding wire and the technology for forming electrochemical composite coatings with copper and nickel matrix. The composite wires applied in the welding of low alloy steels make it possible to refine the microstructure, increase the tensile strength by 4% and the impact toughness of welds by 20%.

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Three-dimensional characterization of typical inclusions in steel by X-ray Micro-CT

Cited by 34 publications

References 24 publications

Water Model Study on the Flotation Behaviors of Inclusion Clusters in Molten Steel

Water Model Study on the Flotation Behaviors of Inclusion Clusters in Molten Steel

Spatial Characterization of Internal Defects in Medium Carbon Steel via X‐Ray Computed Tomography

The Effect of Electrochemical Composite Coatings with LaF3-LaB6 Particles in Nickel–Copper Matrix on the Metallurgical Processes in Arc Welding of Low Alloy Ferrite-Pearlite Steels

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