Investigation on mechanical properties distribution on hot stamped part

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A M-shaped part is a typical section in advanced high strength steel components such as side impacts, bumper beams and bpillar. In this paper, an M-shaped part has been hot stamped. To research the microstructure and mechanical properties distribution of the M-shaped part, tensile tests of hot stamped samples were performed. The mechanical properties vary in different regions of the M-shaped part. To explain this difference and to predict the properties distribution, a 2D thermomechanical finite element (FE) model based on the Johnson Cook constitutive equation, was developed to simulate the hot stamping process for the M-shaped part. Based on the FE results, the cooling rates in die-quenching stage changes along the Mshaped section because of different tools' gap and holding pressure, which causes the fluctuation of microstructure and mechanical properties.




Huang, M. D., Wang, B. Y., Zhoua, J., & Li, X. T. (2014). Investigation on mechanical properties distribution on hot stamped part. In Procedia Engineering (Vol. 81, pp. 1774–1779). Elsevier Ltd.

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