|
|
Thermal, Microstructural and Mechanical Coupling Analysis Model for Flatness Change Prediction During Run-Out Table Cooling in Hot Strip Rolling |
WANG Xiao-dong1,2,LI Fei1,JIANG Zheng-yi2 |
1. Shougang Research Institute of Technology, Shougang Group, Beijing 100043, China 2. Faculty of Engineering, University of Wollongong, Wollongong NSW 2522, Australia |
|
|
Abstract Non-uniformity of temperature distribution across strip width direction is the ultimate reason why the flatness defect occurs on the strip after cooling process although the strip is flat at the exit of finishing mill. One thermal, microstructural and mechanical coupling analysis model for predicting flatness change of steel strip during the run-out table cooling process was established using ABAQUS finite element software. K Esaka phase transformation kinetics model was employed to calculate the phase transformation, and coupled with temperature calculation using the user subroutine program HETVAL. Elasto-plasticity constitutive equations of steel material, in which conventional elastic and plastic strains, thermal strain, phase transformation strain and transformation induced plastic strain were considered, were derived and programmed in the user subroutine program UMAT. The conclusion that flatness of steel strip will develop to edge wave defect under the functions of the differential thermal and microstructural behaviors across strip width during the run-out table cooling procedure was acquired through the analysis results of this model. Calculation results of this analysis model agree well with the actual measurements and observation.
|
Received: 25 May 2011
Published: 26 September 2012
|
Corresponding Authors:
Wang Xiao-Dong
E-mail: x_d_wcumt@163.com
|
|
|
|
[1] |
Lei Wang,Di Tang*,Yong Song. Prediction of mechanical behavior of ferrite-pearlite steel[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 321-327. |
[2] |
Hua Zhang,Yan-xin Wu,Jian-xun Fu*,Jie Xu,Qi-jie Zhai. Influence of on-line tempering parameters on microstructure of medium-carbon steel[J]. Chinese Journal of Iron and Steel, 2017, 24(1): 59-66. |
[3] |
Hui GAO,Bang-shao DONG,Shao-xiong ZHOU. Advances in Investigation of Fe-based Glass-forming Alloy Melts[J]. Chinese Journal of Iron and Steel, 2016, 23(6): 509-515. |
[4] |
Shuang-yin CHEN,Xiao-jiao FU,Man-sheng CHU,Xi-zhe LI,Zheng-gen LIU,Jue TANG. Carbothermic Reduction Mechanism of Vanadium-titanium Magnetite[J]. Chinese Journal of Iron and Steel, 2016, 23(5): 409-414. |
[5] |
Nancy M. LOPEZ GRANADOS,Armando SALINAS RODRIGUEZ. EBSD Investigation on Effect of Cooling Rate on Microstructure and Transformation Textures of High Strength Hot-rolled Steel Plates[J]. Chinese Journal of Iron and Steel, 2016, 23(3): 261-269. |
[6] |
Gang NIU,Yin-li CHEN,,,Hui-bin WU,,,Xuan WANG,Mao-fang ZUO,,Zhi-jun XU,,. Effects of Chromium, Vanadium and Austenite Deformation on Transformation Behaviors of High-strength Spring Steels[J]. Chinese Journal of Iron and Steel, 2016, 23(12): 1323-1332. |
|
|
|
|