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- Influence of Bainite Morphology on Ductile Fracture Behavior in a 0.4C-CrMoNi Steel
Navid Saeidi, Fakhreddin Ashrafizadeh, Behzad Niroumand, Mohammad Reza Forouzan and Frederic Barlat
Article first published online: 11 SEP 2014 | DOI: 10.1002/srin.201400155
SEM analysis is involved in studying ductile fracture mechanism in upper and lower bainitic steels. Detailed microstructural analysis reveales that cracking and interface decohesion of Al2O3 inclusions at lower strains and decohesion of cementite/ferrite matrix interfaces at higher strains are the main void nucleation mechanisms. Void growth behavior is also modeled. Moreover, final fracture mechanisms are examined and cleared in both steels studied.
- ASR Bending Force Mathematical Model for the Same Width Strip Rolling Campaigns in Hot Rolling
Yan-Lin Li, Jian-Guo Cao, Guang-Hui Yang, Dun Wen, Yi-Zhong Zhou and Heng-Hao Ma
Article first published online: 11 SEP 2014 | DOI: 10.1002/srin.201400133
ASR bending force mathematical model for different rolling schedules is established. The model is related with the strip width, the rolling force, the diameters of rolls and the roll shifting stroke. The developed model lead a better crown of non-oriented electrical steel and an increase in coil numbers within a large number of the same width strip rolling campaign in production mills.
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- Experimental Study on the Refining Desulfurization Slag Made from the Reduced Red Mud
Dong Kai, Wu Long, Liu Wenjuan and Zhu Rong
Article first published online: 2 SEP 2014 | DOI: 10.1002/srin.201400181
Refining desulfurization slags made from the reduced red mud are studied by thermodynamic simulation, orthogonal experiments, and verification experiment. The results of the optimal combination slag with the best desulfurization and the metal Fe separation from the reduced red mud prove that, manufacture refining desulfurization slag is a feasible method on the disposal and recycling of the red mud.
- Optimization of Midrex Direct Reduced Iron Use in Ore-Based Steelmaking
Kaisa Huitu, Mikko Helle, Hannu Helle, Marko Kekkonen and Henrik Saxén
Article first published online: 2 SEP 2014 | DOI: 10.1002/srin.201400091
The potential of using direct reduced iron as a partial substitute of pellets in a blast furnace is studied. The main objective is to analyze the prerequisites for an economically feasible operation of a steel plant integrated with a direct reduction plant. The results illustrate the conditions under which it will be economical to use DRI in the blast furnace.