Non-metallic inclusion and intragranular nucleation of ferrite in Ti-killed C–Mn steel

Byun, Jung-Soo; Shim, Jae Hyeok; Cho, Y.W.; Lee, D.N.

doi:10.1016/s1359-6454(02)00560-8

Cited by 330 publications

(218 citation statements)

References 36 publications

Supporting

Mentioning

204

Contrasting

Unclassified

Order By: Relevance

“…The latter can lead to anisotropy of the steel matrix and act as a possible starting point for crack formation or corrosion [2,3]. Apart from these negative effects, in the field of 'Oxide Metallurgy' [4,5], MnS, whether as single-phase inclusion or together with titanium oxides, is known to act as a potential nucleation agent for the formation of acicular ferrite [6][7][8]. In addition, the formation of MnS prevents internal cracks resulting from the appearance of FeS and reduces hot tearing segregation [9].…”

Section: Introductionmentioning

confidence: 99%

Modeling of manganese sulfide formation during the solidification of steel

et al. 2016

View full text Add to dashboard Cite

A comprehensive model was developed to simulate manganese sulfide formation during the solidification of steel. This model coupled the formation kinetics of manganese sulfide with a microsegregation model linked to thermodynamic databases. Classical nucleation theory and a diffusion-controlled growth model were applied to describe the formation process. Particle size distribution (PSD) and particle-size-grouping (PSG) methods were used to model the size evolution. An adjustable parameter was introduced to consider collisions and was calibrated using the experimental results. With the determined parameters, the influences of the sulfur content and cooling rate on manganese sulfide formation were well predicted and in line with the experimental results. Combining the calculated and experimental results, it was found that with a decreasing cooling rate, the size distribution shifted entirely to larger values and the total inclusion number clearly decreased; however, with increasing sulfur content, the inclusion size increased, while the total inclusion number remained relatively constant.

show abstract

Section: Introductionmentioning

confidence: 99%

Modeling of manganese sulfide formation during the solidification of steel

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Estes resultados indicam que a complexidade da natureza química das inclusões verificadas está em conformidade com os relatos da literatura ( [16,17]. Os elementos encontrados na composição da inclusão do passe de raiz e do passe de acabamento não são relacionados com a constituição do tecido de fibra de vidro.…”

Section: -Pf(g) 2-fs(a) E 3-afunclassified

Caracterização de uma junta soldada com suporte de solda a base de fibra de vidro

Tatagiba

Silva²,

Paranhos³

2012

Soldag. insp.

View full text Add to dashboard Cite

Resumo Palavras-chave: Soldagem unilateral; Suporte de solda; Fibra de vidro. Abstract: The objective of this work was to evaluate a weld support based on fiber glass tissue, having been used a joint welded by the MIG/MAG process of an C-Mn steel with 16 mm thick and a V groove, characteristic of the one-side welding. After the depostition of the root pass over the weld support, the joint was completed by conventional MIG/MAG welding, being evaluated by means of nondestructive and destructive tests (transversal tension, lateral bending and hardness). In addition, optical microscopy and spectroscopy of dispersed energy (SDE) in inclusions of

show abstract

“…However, it appears that the formation of MDZ around the Ti2O3-containing particles due to the Mn absorption into the particles is the likely mechanism of IGF formation 25,26) together with the precipitation of TiN on Ti2O3-containing particles, which act as effective nucleation sites due to their high coherency with ferrite. One of the probable explanations for this is that the oxygen potential determined by the Ti/Ti2O3 equilibrium increases locally due to the decrease in the soluble Ti content as a result of TiN precipitation.…”

Section: Oxide Compositionmentioning

confidence: 99%

Influence of Oxide Particles and Residual Elements on Microstructure and Toughness in the Heat-Affected Zone of Low-Carbon Steel Deoxidized with Ti and Zr

Suito

Karasev

Hamada³

et al. 2011

ISIJ Int.

View full text Add to dashboard Cite

The microstructure and toughness in Fe-0.04%C-1.85%Mn-0.03%Si-0.018%Nb steel deoxidized with Ti and Zr have been studied as functions of particle characteristics, austenite grain size and soluble Ti and Zr contents using a simulated HAZ (heat affected zone) thermal cycle (peak temperature, 1 400°C; peak holding time, 60 s; time of cooling from 800 to 500°C, 70 s) and submerged arc welding (heat input of 15 kJ/mm), respectively. Microstructures were studied in samples containing 1.0 to 1.5 μm-diameter oxide particles numbering 500 to 2 000 mm -2 and with a soluble oxygen content of 10 to 30 ppm (measured before casting) and soluble Ti and Zr contents of 50-150 ppm. The γ grain size after HAZ thermal cycle in the range between 200 and 600 μm is controlled by pinning and solute drag. Small γ grain size below 300 μm was obtained with high soluble Ti and Zr contents of 110-160 ppm, whereas large γ grain size above 300 μm was obtained with low soluble Ti and Zr contents of 60-110 ppm. Two types of microstructures that showed high Charpy absorbed energy (VE(-10°C)= 150-250 J and VE(-50°C)= 50-150 J) were observed independent of γ grain size: One is acicular ferrite and a small amount of grain boundary ferrite (GBF) and ferrite side plate (FSP) and the other is GBF, FSP and granular bainitic ferrite. It was observed that low VE(T) values are attributed to the formation of porosity, large-size particles, carbides (+nitrides) and lathe bainitic ferrite.

show abstract

Non-metallic inclusion and intragranular nucleation of ferrite in Ti-killed C–Mn steel

Cited by 330 publications

References 36 publications

Modeling of manganese sulfide formation during the solidification of steel

Modeling of manganese sulfide formation during the solidification of steel

Caracterização de uma junta soldada com suporte de solda a base de fibra de vidro

Influence of Oxide Particles and Residual Elements on Microstructure and Toughness in the Heat-Affected Zone of Low-Carbon Steel Deoxidized with Ti and Zr

Contact Info

Product

Resources

About