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ZHANG P.,Northeastern University China | ZHANG P.,Benxi Iron and Steel Group Co Ltd | GUO Y.-h.,Northeastern University China | WANG Z.-d.,Northeastern University China | And 2 more authors.
Journal of Iron and Steel Research International | Year: 2010

The texture evolution of ferritic hot rolled Ti-IF steel during cold rolling was investigated in which the reduction was from 15% to 85%. It was found that α fibre texture was monotonously intensified with the increase in the cold rolling reduction, while γ fibre texture changed in a different way. When the cold rolling reduction was in the range of 15%-35% or 45%-75%, γ fibre texture was strengthened; however, when the cold rolling reduction was 35%-45% or 75%-85%, the intensity of γ fibre was reduced. The γ fibre displayed a maximum intensity for the reduction of 75%, and the highest average plastic strain ratio was simultaneously obtained owing to the favorable recrystallization texture. © 2010 Central Iron and Steel Research Institute. Source


Tian H.,Beijing Union University | Chen D.,Benxi Iron and Steel Group Co Ltd
2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010 | Year: 2010

The modeling and kinetic simulation on a pendular telescopic coal flowing equipment are introduced in this paper based on the software Pro/E. There are five main components' modeling included the train and the railway are given through this software. Using the software, the simulated assembling is provided, and the moving relation is established about the practice working state. The reasonable drivers are presented in order to carry out the kinetic simulation about this machine. ©2010 IEEE. Source


Chen P.,Northeastern University China | Yan J.J.,Benxi Iron and Steel Group Co Ltd | Shen C.Y.,Northeastern University China | Xu Y.B.,Northeastern University China | Wang G.D.,Northeastern University China
Materials Science Forum | Year: 2014

The low silicon transformation-induced plasticity (TRIP) steel with phosphorus addition is consisted of the microstructure of retained austenite, ferrite and bainite which produced by intercritical annealing and isothermal bainite transformation followed by rapid cooling. In this study, isothermal bainite transformation of different experimental parameters in low silicon TRIP steel with phosphorus addition was investigated in laboratory. The addition of cheap element phosphorus, which has the same effect of silicon in retard the kinetics of carbide formation during isothermal bainite transformation, can reduce the silicon content, improve surface quality, solve galvanizing problem and reduce costs. The effect of bainite isothermal temperature, intercritical annealing temperature and heating rates were investigated by dilatometric experiment on a push-rod Formastor-FII high-speed dilatometer with radio frequency induction heating. The high resolution observations, composition analysis and elements distribution of microstructure were carried out using the electron scanning microscopy of a field emission electron probe microanalyzer (JEOL JXA-8530F) operating at 20KV accelerating voltage. © (2014) Trans Tech Publications, Switzerland. Source


Yang X.-F.,Northeastern University China | Yang X.-F.,Benxi Iron and Steel Group Co Ltd | Yang W.,Northeastern University China | Yang W.,Benxi Iron and Steel Group Co Ltd | Liu J.-C.,Northeastern University China
Kongzhi yu Juece/Control and Decision | Year: 2011

For a class of discrete-time systems with simultaneous sector-bounded nonlinearities and varying time delay, the design problem of non-fragile nonlinear memory state feedback H∞ controller is investigated. A more general controller gain variations is proposed. A sufficient delay dependent condition for the existence of non-fragile controller is obtained by using appropriate Lyapunov-Krasovskii functional approach and linear matrix inequality(LMI) technique. Finally, a numerical example demonstrates the effectiveness of the proposed design method. Source


Yang X.-F.,Northeastern University China | Yang X.-F.,Benxi Iron and Steel Group Co Ltd | Yang W.,Northeastern University China | Yang W.,Benxi Iron and Steel Group Co Ltd | Liu J.-C.,Northeastern University China
Kongzhi yu Juece/Control and Decision | Year: 2011

This paper considers the problem of non-fragile H ∞ filtering for fuzzy discrete-time systems with the consideration of the additive gain variations, which reflects the FWL effects in filter implementation. The introduction of the fuzzy property results in a more complex numerical computation problem. A notion of structured vertex separator is employed to approach the problem, and exploited to develop sufficient conditions for the non-fragile H ∞ filter design in terms of solutions to a set of linear matrix inequalities(LMIs). The design renders the augmented system asymptotically stable and guarantees the H ∞ attenuation level less than a prescribed level. A numerical example shows the effectivness of the proposed method. Source

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