Study on the thermo-mechanical-metallurgical couple model of tailored hot stamping

被引：0
|
作者：
Zhang, Zhiqiang [1 ]
Cui, Yuejie [1 ]
Zheng, Qifeng [2 ]
机构：
[1] Jilin Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat, Changchun, Jilin, Peoples R China
[2] Jilin Univ, Roll Forging Res Inst, 5988 Renmin St, Changchun 130022, Jilin, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2019年 / 35卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Tailored hot stamping; boron steel; activation energies; microstructures; HIGH-STRENGTH STEEL; BORON STEEL; PREDICTION; COMPONENTS; SIMULATION;
D O I：
10.1080/02670836.2019.1615768
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to predict the microstructures and hardness evolution of tailored hot stamping (THS) component, a thermo-mechanical-metallurgical couple finite element model was established. In particular, the activation energies for ferrite and bainite in the model were optimised. THS experiment of U-shape component with segmented heating and cooling was also performed to compare the hardness distribution and phase change with numerical simulation. The results showed that the original model and the activation energy optimised model can both be used to predict the microstructures and hardness evolution for hot stamping components with full martensite. As for THS component, the effect of cooling path and deformation on the activation energies of phase transformation should be considered.
引用
收藏
页码：1185 / 1192
页数：8
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