Microstructure Control of Steels through Dispersoid Metallurgy Using Novel Grain Refining Alloys

Grong, Ø.; Kolbeinsen, Leiv; Eijk, Casper van der; Tranell, Gabriella

doi:10.2355/isijinternational.46.824

Cited by 97 publications

(64 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to him, this was necessary to better optimize material properties which are highly influenced by the presence of inclusions. Almost a decade later in 2006 Grong et al 71) combined these two ideas. He suggested that one has to practice Inclusion Engineering to get the optimum microstructure for optimum mechanical properties.…”

Section: Inclusion Metallurgymentioning

confidence: 99%

“…However, the patches of MnS, which formed around Ce-O-S complex inclusion, promoted AF nucleation. 71,88) In addition, according to Grong et al,71) the range of composition in Ce-alloyed steels is very narrow in obtaining active inclusions.…”

Section: Complex Oxy-sulfides and Multi-phase Inclusionsmentioning

confidence: 99%

“…Recently Grong and co-workers (Eijk et al) 50,62,71,88) showed experimentally that the inclusions had not only a complex distribution of phases, but also a non-uniform distribution of elements within the inclusion. It was found that inclusions in hot-rolled steels deoxidized with Ti were complex Ti-and Al-oxides with MnS and TiN which had been precipitated on the surface.…”

Section: Complex Oxy-sulfides and Multi-phase Inclusionsmentioning

confidence: 99%

“…8. Grong et al 71) refers to the inclusions (such as oxides, sulphides, carbides or nitrides) of ϳ1mm size, which are capable of promoting the nucleation of AF, as "dispersoids". This is especially because they are not harmful to mechanical properties because of their small size.…”

Section: Size Of Inclusionsmentioning

confidence: 99%

See 3 more Smart Citations

On the Role of Non-metallic Inclusions in the Nucleation of Acicular Ferrite in Steels

2009

View full text Add to dashboard Cite

The effects of non-metallic inclusions in nucleating acicular ferrite in steels during cooling from a weld or cooling from an austenitic temperature are reviewed. The influence of the acicular ferrite (AF) structure on mechanical properties of steels such as strength and toughness is briefly mentioned. The different factors affecting the formation of acicular ferrite, such as the soluble content of alloying elements in steel, cooling rate from austenitizing temperature, austenite grain size and inclusion characteristics in steel, are discussed. The mechanisms of acicular ferrite formation on non-metallic inclusions, such as reduction of interfacial energy, mismatch strain between the inclusion and ferrite/austenite, thermal strains at the inclusions and changes in matrix composition near the inclusions are also discussed. Finally, the effects of inclusion characteristics, such as size, number and composition are described and their effectiveness in nucleating acicular ferrite is discussed.KEY WORDS: non-metallic inclusions, intragranular acicular ferrite formation, strength and toughness, steel. 1063

show abstract

Section: Inclusion Metallurgymentioning

confidence: 99%

Section: Complex Oxy-sulfides and Multi-phase Inclusionsmentioning

confidence: 99%

Section: Complex Oxy-sulfides and Multi-phase Inclusionsmentioning

confidence: 99%

Section: Size Of Inclusionsmentioning

confidence: 99%

See 2 more Smart Citations

On the Role of Non-metallic Inclusions in the Nucleation of Acicular Ferrite in Steels

2009

View full text Add to dashboard Cite

show abstract

“…Considering the aspects of steel cleanness and the utilization of nonmetallic inclusions, the concept of inclusion engineering was further proposed, which is explained in Figure 1. Key objectives, on the one hand, include modifying harmful inclusions into harmless particles and, on the other hand, to produce inclusions with an adjusted composition, structure, size, and number density to optimize the microstructure [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Modeling Inclusion Formation during Solidification of Steel: A Review

You

Michelic

Presoly

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The formation of nonmetallic inclusions in the solidification process can essentially influence the properties of steels. Computational simulation provides an effective and valuable method to study the process due to the difficulty of online investigation. This paper reviews the modeling work of inclusion formation during the solidification of steel. Microsegregation and inclusion formation thermodynamics and kinetics are first introduced, which are the fundamentals to simulate the phenomenon in the solidification process. Next, the thermodynamic and kinetic models coupled with microsegregation dedicated to inclusion formation are briefly described and summarized before the development and future expectations are discussed.

show abstract

In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Ce‐Containing Inclusions in 16Mn Steel

Wen

Song

2012

steel research int.

View full text Add to dashboard Cite

The effects of chemical compositions and austenitizing temperature on the formation of intragranular acicular ferrite (IAF) of 16Mn steel were systematically investigated, and the in situ observation of the evolution of IAF at Ce-containing inclusions was carried out using a high-temperature laser scanning confocal microscopy. The results show that trace amount of Ce can induce the IAF nucleation, while the optimum content of Ce is around 0.02 wt%. The appropriate austenitizing temperature is around 12008C and the optimal prior austenite grain size is about 120 mm. The temperature range for IAF transformation is around between 557 and 6238C, and the time for which is about 13 s. The disregistries between Ce-containing inclusions and a-Fe are so small that may act as highly effective nuclei of IAF.

show abstract

Microstructure Control of Steels through Dispersoid Metallurgy Using Novel Grain Refining Alloys

Cited by 97 publications

References 34 publications

On the Role of Non-metallic Inclusions in the Nucleation of Acicular Ferrite in Steels

On the Role of Non-metallic Inclusions in the Nucleation of Acicular Ferrite in Steels

Modeling Inclusion Formation during Solidification of Steel: A Review

In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Ce‐Containing Inclusions in 16Mn Steel

Contact Info

Product

Resources

About