Transactions of Materials and Heat Treatment

Title：Simulation of lightweight Bpillar during hot stamping process with thermo-mechanicalmetallurgical model

Authors： GUI Zhong-xiang ZHANG Yi-sheng WANG Zi-jian

Unit： State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China

KeyWords： lightweight ultra high strength steel hot stamping thermomechanicalmetallurgical couple

ClassificationCode：TH16

year,vol(issue):pagenumber：2012,37(6):193-197

Abstract：

In order to deeply investigate the hot stamping process, FE model of a Bpillar was established based on thermomechanicalmetallurgical coupled analysis method. Simulation of the whole process was conducted, thermodynamic behavior and phase transformations of the blank during different steps, such as heating, feeding,forming,quenching were observed. Distribution of the temperature, thickness, microstructures, ect. of the sheet metal were obtained for the purpose of providing some theoretical proofs for hot stamping tools designing and optimization of processing parameters. Controlling the cooling rate reasonably was proposed for getting a mixture of multiphase microstructures to meet the needs of a combination of strength and ductility, finally to improve the mechanical properties of part. Simulation results agreed with the experimental data which shows that the thermomechanicalmetallurgical coupled model is reliable.

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Reference：

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