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ZHAO Hongzhuang , Seokjae LEE , Youngkook LEE , LIU Xianghua , WANG Guodong
钢铁研究学报(英文版)
This study aims at the experimental analysis of the transformation induced plasticity (TRIP) phenomenon. Experiments are conducted in which martensite is allowed to grow under the influence of a series of externally applied stresses. The magnitude of the applied stresses is less than 67% of the yiel...
关键词: applied stress;TRIP;martensite transformation;lowalloy steel
XU Yunbo , YU Yongmei , LIU Xianghua , WANG Guodong
Based on thermodynamics and kinetics, a new mathematical model was developed to calculate the CCT diagrams and the transformation kinetics in low carbon niobium steels, in which the effect of deformation on the degree of supercooling was taken into account. The undercooling caused by deformation is ...
关键词: low carbon niobium steel;thermodynamics;supercooling degree;continuous cooling transformation;computer model
ZHU Fuwen , ZENG Qingliang , HU Xianlei , LI Xian , LIU Xianghua
Owing to a lack of gaugemeter and the variety of steel grades and standards in some plate mills, the long and shortterm selflearning models of rolling force based on gauge softmeasuring with high precision were brought up. The softmeasuring method and target value locked method were used in the...
关键词: plate;selflearning;soft measuring;rolling force
WANG Bingxin , JIANG Yingtian , XU Xudong , LIU Xianghua , WANG Guodong
The effect of compressive deformation of austenite on continuous cooling transformation microstructures for 22CrSH gear steel has been investigated using a Gleeble 1500 thermal simulator. The experimental results show that the deformation of austenite promotes the formation of proeutectoid ferrite a...
关键词: gear steel;prior compressive deformation;austenite;transformation;microstructure
DU Linxiu , ZHANG Zhongping , TIAN Yuwei , LIU Xianghua , WANG Guodong
gy Center, Benxi Steel Group, Benxi 117000, Liaoning, China) Abstract： The fatigue properties of 400 MPa grade supersteel, plain low carbon steel SS400 and microalloyed steel Q340TM were investigated through tensilecompression fatigue experiment with R=-1. The results indicate that the fatigue ...
关键词: supersteel;grain refinement;fatigue property
YU Hailiang , LIU Xianghua , WANG Chao , Park Haedoo
The acting force on the roll system of Sendzimir mill was analyzed using 3D FEM. The roll gap pressure distribution and the acting force between rolls S and O, rolls O and I, rolls O and J, rolls I and A, rolls I and B, as well as rolls J and B were analyzed. The results showed that the roll gap pre...
关键词: roll gap pressure;Sendzimir mill;FEM
YU Hailiang , LIU Xianghua , LI Changsheng , WANG Guodong
The deformation of slab with dogbone shape during the horizontal rolling process was simulated using FEM, and the influences of apical dislocation of dogbone on the slab spread as well as the minimum crop end loss and the lost width at slab head and tail were analyzed. The results show that with t...
关键词: dogbone;apical dislocation;horizontal rolling;FEM
DING Jingguo , HU Xianlei , JIAO Jingmin , SHE Guangfu , LIU Xianghua
Thickness deviation of hot strip rolling needs to be strictly controlled in the computer system. An adaptive threading technique was researched, in which the measured data from threaded stands were used to predict thickness and material hardness errors, to modify the setup for the remaining unthread...
关键词: hot strip mill;adaptive threading;thickness deviation;stretch equation
LIU Xianghua
Rolling of gauge changeable (RGC) is a new technology to produce flat with different thickness (FDT), which could be used to replace conventional flat products in order to save metals and reduce structure weight. This paper introduced the method of RGC, investigated new problems in rolling theory of...
关键词: variable gauge rolling;longitudinal profile plate;tailor rolled blank
GUO Yanhui , WANG Zhaodong , ZOU Wenwen , LIU Xianghua , WANG Guodong
The texture evolution in a high strength TiIF steel during the processing of hot rolling, cold rolling, and annealing is studied. For comparison, both ferrite rolling and austenite rolling are employed. It is found that the texture type is the same after ferrite rolling and austenite rolling, but t...
关键词: high strength TiIF steel;ferrite rolling;austenite rolling;texture
