材料期刊网

Artificial Neural Network Modeling of Microstructure During CMn and HSLA Plate Rolling

TAN Wen , LIU Zhenyu , WU Di , WANG Guodong

钢铁研究学报(英文版)

An artificial neural network (ANN) model for predicting transformed microstructure in conventional rolling process and thermomechanical controlled process (TMCP) is proposed. The model uses austenite grain size and retained strain, which can be calculated by using microstructure evolution models, to...

关键词: artificial neural network;TMCP;microstructure;ferrite grain size

Effect of Niobium and Titanium on Dynamic Recrystallization Behavior of Low Carbon Steels

MA Liqiang , LIU Zhenyu , JIAO Sihai , YUAN Xiangqian , WU Di

钢铁研究学报(英文版)

Using a Gleeble 3800 thermomechanical simulator, the effect of niobium and titanium on the dynamic recrystallization (DRX) behavior of low carbon steels was investigated. Isothermal single compression tests were performed in the temperature range of 850 to 1 150 ℃ at constant strain rates of 01 to...

关键词: peak strain;activation energy;dynamic recrystallization It is known that the experimental

Effect of Holding Time on the Microstructure and Mechanical Properties of Dual-Phase Steel during Intercritical Annealing

LI Zhuang , WU Di , Lü Wei , YU Huanhuan , SHAO Zhenyao , LUO Lei

武汉理工大学学报-材料科学版(英文版) doi:10.1007/s11595-015-1118-5

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Fatigue Property of Low Cost and High Strength Wheel Steel for Commercial Vehicle

WANG Ning , LI Yi , DU Linxiu , WU Di , LIU Xianghua

钢铁研究学报(英文版)

The fatigue properties of the newly developed wheel steel used for commercial vehicles were studied using pushpull axial loading fatigue tests with stress ratio R=-1. Q235B steel, which is conventionally applied to commercial vehicle wheels, was also analyzed for comparison. Although the chemical c...

关键词: high strength wheel steel;fatigue strength;grain refinement;dynamic cornering

Modeling of StrainInduced Precipitation Kinetics and Evolution of Austenite Grains in Nb Microalloyed Steels

ZHOU Xiaoguang , LIU Zhenyu , YUAN Xiangqian , WU Di , WANG Guodong , LIU Xianghua

钢铁研究学报(英文版)

Considering the effect of strain and chemical composition on precipitation behavior, new models for the start and end time of Nb(C,N) precipitation in austenite under the conditions of different temperatures and strains have been investigated for Nb microalloyed steel. The value of n in the precipit...

关键词: straininduced precipitation;start time;precipitation;static recrystallization;grain size

Microstructure and Mechanical Properties of Hot Rolled Low Silicon TRIP Steel Containing Phosphorus and Vanadium

HOU Xiao-ying , XU Yun-bo , ZHAO Yan-feng , WU Di

钢铁研究学报(英文版)

The microstructure characteristics and mechanical properties of a low-silicon TRIP steel containing phosphorus and vanadium at different finish rolling temperatures were studied by laboratory hot rolling experiments. Different ratios of multiphase microstructure (ferrite, granular bainite and retain...

关键词: hot rolling , low silicon , TRIP steel , phosphorus , vanadium , EBSD , precipitation

Modeling of Austenite Decomposition in Low SiMn TRIP Steel During Cooling

ZHU Lijuan , WU Di , ZHAO Xianming

钢铁研究学报(英文版)

Transformation behavior in low carbon SiMn TRIP steel was investigated by means of microstructural observation and computer modelling. A transformation model in which transformation is controlled by carbon diffusion was suggested, which well described the volume fractional change of ferrite, pearli...

关键词: TRIP steel;transformation;incubation time;ferrite;bainite;pearlite

Surface Temperature Change of U75V 60 kg/m Heavy Rail During Heat Treatment

KANG Hao , WU Di , ZHAO Xian-ming

钢铁研究学报(英文版)

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Effect of Thermomechanical Processing on Mechanical Properties of Hot Rolled Multiphase Steel

LI Zhuang , WU Di , L Huisheng

钢铁研究学报(英文版)

The effect of thermomechanical processing (TMP) on the mechanical properties of hot rolled multiphase steel was investigated. TMP was conducted using a laboratory hot rolling mill, in which three different kinds of finish rolling deformation degrees and temperatures were applied. The results indicat...

关键词: hot rolled multiphase steel;finish rolling deformation degree;finish rolling temperature;retained austenite;mechanical property

Recrystallization Modelling of Hot Deformed SiMn TRIP Steel

ZHU Lijuan , WU Di , ZHAO Xianming

钢铁研究学报(英文版)

By means of hot compression single and double hit experiments, the kinetics of dynamic and static recrystallization in hotrolled SiMn TRIP steel was studied, and the emphasis was put on the influence of high silicon content. The results show that the calculated parameters are consistent with the e...

关键词: dynamic recrystallization;static recrystallization;mathematical model;TRIP steel;silicon