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Online ISSN: 1869-344X

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    Volume 85, Issue 10

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    Special Issue: Multiscale Modeling

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Recently Published Articles

  1. Numerical Simulation of Flow-Induced Wall Shear Stresses in Three Different Shapes of Multi-Strand Steelmaking Tundishes

    Md Irfanul Haque Siddiqui and Pradeep Kumar Jha

    Article first published online: 15 OCT 2014 | DOI: 10.1002/srin.201400217

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    Numerical investigation of the effect of three different tundish shapes, i.e., boat, T-shape, and V-shape on generation of wall shear stress are carried out. Average wall shear stress value is maximum for V-shape tundish as compared to other two configuration tundishes. Similarity in variation of wall shear stress and turbulent kinetic energy is observed at different walls.

  2. Mathematical Modeling of Nitrogen Removal from the Vacuum Tank Degasser

    Shan Yu, Jyrki Miettinen, Lei Shao and Seppo Louhenkilpi

    Article first published online: 14 OCT 2014 | DOI: 10.1002/srin.201400093

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    This paper is focused on predicting nitrogen removal from the vacuum degasser specially taking into account the multi-component effect of steel composition. An integrated computational fluid dynamics (CFD) model is developed. Two operating diagrams are obtained to give the correlations between chemical reaction rate constant, initial nitrogen content, and final nitrogen content in liquid steel.

  3. Microstructural Refinement and Mechanical Properties of High-Speed Niobium-Microalloyed Railway Wheel Steel

    Si Wu, Xiu-Cheng Li, Juan Zhang, Cheng-jia Shang and Raja Devesh Kumar Misra

    Article first published online: 14 OCT 2014 | DOI: 10.1002/srin.201400236

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    The microstructure of railway wheel steel is refined and the percentage of ferrite is increased from 4 to 24% with the addition of 0.06% Nb. The addition of Nb inhibits mixed microstructure and delays the coarsening temperature of austenite grains from 880 to 960 °C. The impact energy at −20 °C is increased from 7.0 to 19.0 J with no apparent reduction in tensile strength. The grain refining and precipitation strengthening are roles of niobium in promoting ferrite–pearlite transformation and improving toughness in medium carbon steels.

  4. Influence of Al2O3 Content on Liquid Phase Proportion and Fluidity of Primary Slag and Final Slag in Blast Furnace

    Shengli Wu, Wei Huang, Mingyin Kou, Xinliang Liu, Kaiping Du and Kaifa Zhang

    Article first published online: 7 OCT 2014 | DOI: 10.1002/srin.201400158

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    The objective of this study is to understand the effect of Al2O3 on blast furnace operation by studying the properties of liquidus temperature, liquid phase proportion and fluidity of the primary slag in the cohesive zone and the final slag in the hearth of the blast furnace. The optimization measures by adding MgO content and increasing CaO/SiO2 are discussed.

  5. Effect of Water Vapor on Sulfur Distribution Between Liquid Fe and MgO-Saturated Slag Relevant to a Flash Ironmaking Technology

    Yousef Mohassab and Hong Yong Sohn

    Article first published online: 3 OCT 2014 | DOI: 10.1002/srin.201400197

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    For the first time, the effect of water vapor on the distribution of sulfur between slag and molten iron is studied for MgO-saturated CaO[BOND]FeO[BOND]Al2O3[BOND]SiO2[BOND]MnO (0.2–0.8 wt%)[BOND]P2O5 (0.1–0.9 wt%) slags in the temperature range 1550–1600 °C under CO/CO2/H2/H2O, H2/H2O, and CO/CO2 with pO2 = 10−10–10−9 atm. Water in the gas atmosphere is found to increase LS.

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