Finite element simulation of influence of hot stamping process parameters on properties of 22MnB5 martensitic steel for automobile B-pillar

doi:10.13251/j.issn.0254-6051.2020.05.043

Abstract

Abstract: Influence of parameters on wrinkle, rebound, thinning, martensitic volume fraction and strength of 22MnB5 martensitic steel B-pillar during hot stamping process were studied by means of finite element analysis software Autoform. The results show that the optimum process parameters of hot stamping for 22MnB5 martensitic steel B-pillar are heating temperature of 930 ℃ and cooling rate of 80 ℃/s, with which, the martensite transformation of B-pillar is completed, its hardness distribution is uniform, the material thinning rate is low, the hot stamping forming effect is good, the size accuracy is high, and the strength of stamping workpieces is higher than 1400 MPa.

Key words: 22MnB5 martensitic steel, hot stamping, Autoform software, finite element simulation

CLC Number:

TG156

Wang Zhangzhong, Ba Zhixin, Li Qi, Liu Yonggang, Cui Lei, Liu Langfeng, Dong Jiwu. Finite element simulation of influence of hot stamping process parameters on properties of 22MnB5 martensitic steel for automobile B-pillar[J]. Heat Treatment of Metals, 2020, 45(5): 221-228.

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