steel research international
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Online ISSN: 1869-344X
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Recently Published Articles
- Behaviors of Normal Grain Growth in Polycrystalline Fe–3%Si Alloys
Weimin Mao, Maohua Zhang and Ping Yang
Article first published online: 7 MAR 2014 | DOI: 10.1002/srin.201300350
Very low activation enthalpy and pre-exponential factor for normal boundary migration are obtained in Fe–3%Si–MnS alloy. The atoms should be pre-activated before they jump over moving boundaries. The predominant migrations of strongly curved boundaries and triple junctions in polycrystals increase the pre-activation energy and reduce the activation enthalpy and pre-exponential factor, which differs from those in bicrystals.
- Impact of the Microstructure on the U–O Forming Simulations of a Ferrite–Pearlite Pipeline Tube
Gottfried Laschet, Mohit Shukla, Thomas Henke, Patrick Fayek, Markus Bambach and Ulrich Prahl
Article first published online: 7 MAR 2014 | DOI: 10.1002/srin.201300247
A multi-scale approach, involving a two-level homogenization and a localization analysis after macro-simulation, is used to predict the impact of different ferrite-pearlite microstructures on the U-O forming process of a pipeline steel. Effective plastic flow curves of the X65 steel are derived for a central and surficial microstructure (see figure). Their anisotropy is noticeable and the effect of reduced lamella spacing of pearlite at the skin is quantified.
- Behavior of Transformation-Induced Plasticity during Adiabatic Shear Bands Formation in High Manganese Steels
Xiurong Sun, Huizhen Wang, Ping Yang and Weimin Mao
Article first published online: 7 MAR 2014 | DOI: 10.1002/srin.201300381
This work demonstrates that at high strain rate of over 104 s−1 high manganese TRIP steel possesses higher work hardening rate than pure copper and an armor steel containing martensite. TRIP effect occurs smoothly outside shear bands and is suppressed inside them, and it can postpone shear band formation. Dynamic recrystallization proceeds in α′-martensite involved in shear bands.
- Experimental Investigation of Hot Stamping of Ultra High Strength Steel
Li-Qiang Zhang, Wen-Fang Tan and Luo-Xing Li
Article first published online: 7 MAR 2014 | DOI: 10.1002/srin.201300246
The paper shows that the spring-back angles are greatly reduced after hot stamping. The part strength is obviously improved. The mechanical properties and microstructures in the part show an inhomogeneous phenomenon due to the different cooling condition. The sidewall of the part has a higher tensile strength and a lower elongation compared with the other locations.