Sergiu Ilie
YOU?
Author Swipe
View article: Interface tracking in modeling of nozzle clogging in steel continuous casting
Interface tracking in modeling of nozzle clogging in steel continuous casting Open
A common problem in continuous casting of steel is clogging of the submerged entry nozzle (SEN), which occurs due to the continuous build-up of solid material. Clogging reduces productivity of the process and the quality of the final produ…
View article: Application of Statistical Learning Methods to a Data Set of Measured Heat Transfer Coefficients for Continuous Casting
Application of Statistical Learning Methods to a Data Set of Measured Heat Transfer Coefficients for Continuous Casting Open
The heat transfer coefficient (HTC) between water and air/water sprays and the strand surface is a major parameter to simulate solidification in continuous casting processes. The HTC can be calculated via various equations from literature.…
View article: Experimental Analysis of the Nb(C,N) Pinning Effects on Austenite Grain Growth Coupled with Mean‐Field Simulations
Experimental Analysis of the Nb(C,N) Pinning Effects on Austenite Grain Growth Coupled with Mean‐Field Simulations Open
The pinning forces of niobium carbonitrides (Nb(C,N)) on grain boundary (GB) migration in austenite (γ‐Fe) are studied under isothermal annealing conditions at temperatures of 950, 1050, 1150, and 1250 °C. High‐temperature laser scanning c…
View article: Investigation of hot ductility behavior of micro‐alloyed steel and the effect of strain rate and dynamic phase transformation on the 2<sup>nd</sup> ductility minimum
Investigation of hot ductility behavior of micro‐alloyed steel and the effect of strain rate and dynamic phase transformation on the 2<sup>nd</sup> ductility minimum Open
Continuous casting of steel is widely used to manufacture semi‐finished long or flat products. Various stresses are present during slab casting: stresses arise from friction between the mold wall and the solidified shell, thermal stresses …
View article: A Hybrid Update of the Fe-Si System by DSC, Thermodynamic Modeling and Statistical Learning from Ladle Refining Data of Electrical Steels
A Hybrid Update of the Fe-Si System by DSC, Thermodynamic Modeling and Statistical Learning from Ladle Refining Data of Electrical Steels Open
Electrical steels, also known as silicon steels, are essential materials in electrical applications due to their unique magnetic properties, which are enhanced by adding up to 3.5 wt pct Si. However, alloying with ferrosilicon FeSi75, a mi…
View article: Scaling Behavior and Surface Quality of High-Strength Low-Alloy Steels with Higher Levels on Cu, Sn, and Ni Under Slab Reheating Conditions
Scaling Behavior and Surface Quality of High-Strength Low-Alloy Steels with Higher Levels on Cu, Sn, and Ni Under Slab Reheating Conditions Open
Nowadays the production of steel from scrap in electric arc furnaces is the most common bridging technology to reduce CO 2 emissions. Depending on scrap quality, a non-negligible content of tramp elements such as Cu, Sn, or Ni is introduce…
View article: Investigating the Origin of Non-Metallic Inclusions in Ti-Stabilized ULC Steels Using Different Tracing Techniques
Investigating the Origin of Non-Metallic Inclusions in Ti-Stabilized ULC Steels Using Different Tracing Techniques Open
Since steel cleanness comes to the fore of steel producers worldwide, it is necessary to understand the formation mechanism and modification of non-metallic inclusions (NMIs) in more detail. One central point is the identification of the s…
View article: Tracing of Deoxidation Products in Ti‐Stabilized Interstitial Free Steels by La and Ce on an Industrial and Laboratory Scale
Tracing of Deoxidation Products in Ti‐Stabilized Interstitial Free Steels by La and Ce on an Industrial and Laboratory Scale Open
The continuous casting of Al‐killed Ti‐stabilized interstitial free steels is often affected by clogging. By today, the mechanism behind this phenomenon is not entirely clarified. The active tracing method, which involves the direct additi…
View article: Effect of Nozzle Parameters on the Cooling Conditions in the Secondary Cooling Zone of a Slab Caster
Effect of Nozzle Parameters on the Cooling Conditions in the Secondary Cooling Zone of a Slab Caster Open
The following contribution focuses on the secondary cooling zone of a slab caster, analyzing the effects of nozzle parameters on cooling conditions. The research group employs experimental measurements, including the Nozzle Measuring Stand…
View article: Thermomechanical and Microstructural Analysis of the Influence of B- and Ti-Content on the Hot Ductility Behavior of Microalloyed Steels
Thermomechanical and Microstructural Analysis of the Influence of B- and Ti-Content on the Hot Ductility Behavior of Microalloyed Steels Open
The effects of the combined addition of B and Ti, as well as the influence of different strain rates on the hot ductility behavior of low carbon, continuously cast, microalloyed steels were investigated in this work. Tensile tests, microst…
View article: A Near‐Process 2D Heat‐Transfer Model for Continuous Slab Casting of Steel
A Near‐Process 2D Heat‐Transfer Model for Continuous Slab Casting of Steel Open
Market requirements on steel products with the highest surface and internal quality demand stimulate a systematic control of the steel solidification behavior during continuous casting (CC). Computational process modeling is increasingly a…
View article: Analysis of transverse corner cracks from continuous casting process and comparison to laboratory experiments
Analysis of transverse corner cracks from continuous casting process and comparison to laboratory experiments Open
Low alloyed steel slabs produced by continuous casting can present transverse corner cracks, which are critical due to the oxide layer formed within the crack. Understanding this type of failure and reproducibility of the phenomenon throug…
View article: Mathematical Modeling of the Early Stage of Clogging of the SEN During Continuous Casting of Ti-ULC Steel
Mathematical Modeling of the Early Stage of Clogging of the SEN During Continuous Casting of Ti-ULC Steel Open
The clogging of the submerged entry nozzle (SEN) during the continuous casting of steel can be divided into two stages: the “early stage,” when the initial layer of the clog covers the SEN refractory surface owing to chemical reactions, an…
View article: An Assessment of Analytical Liquidus Equations for Fe-C-Si-Mn-Al-P-Alloyed Steels Using DSC/DTA Techniques
An Assessment of Analytical Liquidus Equations for Fe-C-Si-Mn-Al-P-Alloyed Steels Using DSC/DTA Techniques Open
Analytical liquidus equations were evaluated using differential scanning calorimetry (DSC) and differential thermal analysis (DTA). Results of 180 measurements in the Fe-C-Si-Mn-Al-P subsystems were considered, where the experimental metho…
View article: Comparison of Hot Ductility Behavior of microAlloyed Steels with Different B-, Cr-, Ni- and Ti-content
Comparison of Hot Ductility Behavior of microAlloyed Steels with Different B-, Cr-, Ni- and Ti-content Open
The continuous casting process requires permanent investigation and innovative improvements due to its large application in steel production.A good hot ductility behavior is essential to avoid the formation of defects during slab casting.T…
View article: Holding Time Influence on the Hot Ductility Behavior of a Continuously Cast Low Alloy Steel
Holding Time Influence on the Hot Ductility Behavior of a Continuously Cast Low Alloy Steel Open
Cracking during the continuous casting process is undesirable and continuous work is being carried out to find further improvements and understand the mechanisms that lead to failure. Investigations on the hot ductility behavior of a conti…
View article: Effect of Strain Rate on the Hot Ductility Behavior of a Continuously Cast Ti–Nb Microalloyed Steel
Effect of Strain Rate on the Hot Ductility Behavior of a Continuously Cast Ti–Nb Microalloyed Steel Open
During the continuous casting process, alloys may be more susceptible to crack initiation under some conditions due to lower ductility. A Ti–Nb microalloyed steel is subjected to in situ melted hot tensile tests to evaluate its hot ductili…
View article: The Role of Grain Boundary Oxidation on Surface Crack Formation under Continuous Casting Conditions
The Role of Grain Boundary Oxidation on Surface Crack Formation under Continuous Casting Conditions Open
This paper represents an extended abstract of a study presented at the ESTAD 2019 conference. In this contribution, the influence of different cooling strategies on the formation of intergranular surface cracks is observed with in-situ ben…
View article: Influence of Thermal History on the Hot Ductility of a Continuously Cast Low Alloyed Cr-Mo Steel
Influence of Thermal History on the Hot Ductility of a Continuously Cast Low Alloyed Cr-Mo Steel Open
The hot ductility of a low alloyed Cr-Mo steel has been investigated to evaluate the surface cracking sensitivity within the straightening or unbending regime during the continuous casting process. Tensile samples were subjected to various…