steel research international

Cover image for Vol. 84 Issue 1

January 2013

Volume 84, Issue 1

Pages 3–100

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Editorial
    5. Full Papers
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      steel research int. 1/2013

      Article first published online: 3 JAN 2013 | DOI: 10.1002/srin.201390000

      Cover Photo: Both the analytical calculation and the numerical simulation methods were researched to predict the total solidification time of large steel ingots. More details can be found in the manuscript Ji et.al.

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Editorial
    5. Full Papers
    1. steel research int. 1/2013 (pages 3–6)

      Article first published online: 3 JAN 2013 | DOI: 10.1002/srin.201390001

  3. Editorial

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Editorial
    5. Full Papers
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      Editorial (page 7)

      Tim Adams

      Article first published online: 3 JAN 2013 | DOI: 10.1002/srin.201200329

  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Editorial
    5. Full Papers
    1. Effect of Magnetic Field Intensity on Abnormal Microstructure in Fe–1.1%C Alloy (pages 8–12)

      Gong MingLong, Chen HaiDong, Liu FengFang, Zhao Xiang and Zuo Liang

      Article first published online: 22 AUG 2012 | DOI: 10.1002/srin.201200067

      Thumbnail image of graphical abstract

      The effects of magnetic field intensity (0, 1, 2, 4, 8, and 12 T) on abnormal microstructure in Fe–1.1%C alloy were investigated during the austenitic decomposition. The magnetic field increases the area fraction and width of the abnormal microstructure. The area fraction of the abnormal microstructure first increases, and then decreases. It reaches the maximum value when the magnetic field intensity increases to 4 T.

    2. A New Method of Rail Head Hardening of Standard-Gauge Rails for Improved Wear and Damage Resistance (pages 13–19)

      Roman Kuziak and Tomasz Zygmunt

      Article first published online: 22 AUG 2012 | DOI: 10.1002/srin.201200140

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      This paper describes a new method of in line rail head hardening process consisting in cyclic immersion of rail's head in the aqueous polymer solution. The method enables very uniform hardening of rail's head without sadden drop in hardness. The head hardened rails were produced with the application of the new method and tested in the severe exploitation conditions giving positive results.

    3. Computational and Experimental Analysis of Carbo-Nitride Precipitation in Tempered Martensite (pages 20–30)

      Sabine Zamberger, Tomasz Wojcik, Jürgen Klarner, Gerald Klösch, Herbert Schifferl and Ernst Kozeschnik

      Article first published online: 8 AUG 2012 | DOI: 10.1002/srin.201200047

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      The analysis of carbo-nitride precipitation kinetics in tempered martensite of Nb-Ti-micro alloyed steel with a carbon content of 0.3 wt% is described. Based on the information obtained from transmission electron microscopy and scanning electron microscopy, a computational simulation procedure is developed within the software package MatCalc. No explicit fitting parameters are used in the computer simulation. The input data is entirely based on independent physical or microstructural parameters.

    4. Investigation on Water Model for Fluid Flow in Slab Continuous Casting Mold With Consideration of Solidified Process (pages 31–39)

      Xing Jin, DengFu Chen, Xin Xie, Jialong Shen and Mujun Long

      Article first published online: 8 AUG 2012 | DOI: 10.1002/srin.201200076

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      This study aims to propose suitable simulation methods, which enable to reduce the major differences between water model and real caster. With consideration of solidified process, the method is concerned with the change of flow space and flow mass at the casting direction in water model. The results indicate that it is necessary for water model to take the solidified process into account to acquire more accurate and reliable experiment results.

    5. Simultaneous Decarburization and Oxidation Reactions Occurring in Silicon and Ferrosilicon Alloys at 1823 K (pages 40–47)

      Pedro J. Yunes Rubio, Rita Khanna, Narendra Saha Chaudhury and Veena Sahajwalla

      Article first published online: 9 AUG 2012 | DOI: 10.1002/srin.201200088

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      Decarburization and silicon oxidation reactions occur extensively in the cupola process. This paper presents high temperature investigations on ferrosilicon alloys ranging from 24.7 to 98.5% Si when interacting with oxidizing gases. The present work evaluates the effect of the alloy composition, oxygen partial pressure and flow rate on interactions at 1823 K. Both reactions were found to occur simultaneously.

    6. Study on the Possibility of Using ZnO to Increase the Desulfurization Potential of Blast Furnace Slag and Sulfide Capacities (pages 48–55)

      David Lindström and Du Sichen

      Article first published online: 14 AUG 2012 | DOI: 10.1002/srin.201200122

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      The present work was carried out to examine whether ZnO could help the remaining blast furnace (BF) slag to capture sulfur. For this purpose, slags prepared with relatively high ZnO content was equilibrated with either liquid silver or liquid copper under controlled oxygen potential. It was found that most of the ZnO escaped during the experiment, indicating thereby that ZnO could not increase the desulfurization potential of the BF slag. The experimental data were used to evaluate the sulfide capacities of the studied slags. In some of the slags equilibrated with silver, the MgO activities were evaluated.

    7. Selection of Desulfurizing Agents and Optimization of Operational Variables in Hot Metal Desulfurization (pages 56–64)

      Sidiney Nascimento Silva, Fernando Vernilli, Sergio Murilo Justus, Cláudio Márcio dos Santos Araújo, Elson Longo, José Arana Varela, José Milton Gabriel Lopes and Bruno Vidal de Almeida

      Article first published online: 9 AUG 2012 | DOI: 10.1002/srin.201200085

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      The operational variables of desulfurization process in torpedo car, as well as its causes and solutions were analyzed. Then laboratorial and industrial tests were done to select the proper desulfurizing agents. Were tested agents based of CaC2, CaO, CaCO3, and Mg to assess the cost per quantity of product desulfurized. The best result was not with the greater CaC2 content.

    8. A Method for Evaluating Coke Hot Strength (pages 65–71)

      Juho Haapakangas, Juha Uusitalo, Olli Mattila, Tommi Kokkonen, David Porter and Timo Fabritius

      Article first published online: 8 AUG 2012 | DOI: 10.1002/srin.201200078

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      The use of a Gleeble device for measuring the hot strength of coke was evaluated. The hot strength of coke was decreased from 15.1 to 12.1 MPa when heated from 1000 to 1600°C. The strength of coke was homogenized at high temperatures. The deformation behavior of coke was brittle at 1000°C, but partially plastic at 1600°C. The decreased strength at high temperature could explain the decrease of coke size observed in quenched blast furnaces.

    9. Strain Rate Sensitivity of Pre-Strained AISI 301LN2B Metastable Austenitic Stainless Steel (pages 72–88)

      Patrick Larour, Patricia Verleysen, Kirsten Dahmen and Wolfgang Bleck

      Article first published online: 14 AUG 2012 | DOI: 10.1002/srin.201200120

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      The dynamic behavior of AISI 301LN2B metastable austenitic steel is investigated at 296 K, in the strain rate range 0.005–1000 s−1, in the as delivered, as well as 10% uniaxial, biaxial, and plane strain pre-strained conditions. The martensitic γ [RIGHTWARDS ARROW] α′ transformation is highly strain rate and pre-straining sensitive. Pre-straining reduces the adiabatic tensile strength softening in the low strain rate range 10−4–10 s−1.

    10. A Novel Heat Treatment for Excavator Dipper Teeth Manufactured from Low-Carbon Low-Alloy Steel (pages 89–93)

      Ming-Chun Zhao, Jing-Li Li, Ying-Chao Zhao, Xiao-Fang Huang, Jin-Zhu Li and Andrej Atrens

      Article first published online: 10 SEP 2012 | DOI: 10.1002/srin.201200103

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      A novel partial forging-remnant-heat hardening technology is proposed for forged excavator teeth from low-carbon low alloy steel. The key metallurgical aspect is the intermediate transformation to pearlite, and the production of a fine tempered martensite microstructure. Dipper teeth produced using this novel technology had good mechanical properties, and a lower cost, congruent with the low carbon economy.

    11. Calculation of the Total Solidification Time for the 230t Large Steel Ingot (pages 94–100)

      Zhijun Ji, Shiqi Li, Yanlin Zhang and Guangwu Tang

      Article first published online: 5 OCT 2012 | DOI: 10.1002/srin.201200171

      Thumbnail image of graphical abstract

      This study provides a reference for the prediction on the total solidification time of large steel ingots. Both the analytical calculation and the numerical simulation methods were researched to predict the total solidification time. The results showed that both methods can predict the time effectively, however, for the analytical method, the ingot mold should be or like a cylinder.

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