Hot stamping forming and finite element simulation of USIBOR1500 high-strength steel

Zhang, Pengyun; Zhu, Linbo; Luo, Shuyi; Luo, Junting

doi:10.1007/s00170-019-03727-w

Cited by 15 publications

(9 citation statements)

References 18 publications

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“…[133] Zhang et al compared the two-stage and onestage hot stamping processes of USIBOR1500 steel based on the temperature field, stress field, thickness distribution, and the forming limit curve. [134] They used a commercial FE package, Dynaform, and predicted the thinning rate of each formed part during the two hot-stamping processes. Lee et al presented a tool design for an indirect hot-press forming process to manufacture an automotive flex plate that delivered torque to a transmission (Figure 7e).…”

Section: Press Hardening Technologymentioning

confidence: 99%

Integrated Computational Materials Engineering for Advanced Automotive Technology: With Focus on Life Cycle of Automotive Body Structure

Park

Min

Kim

et al. 2022

Adv Materials Technologies

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Integrated computational materials engineering (ICME) is a simulation‐driven design approach that employs multiscale‐multiphysics modeling and is based on the understanding of process–structure–property–performance relationships. The ICME approach has attracted considerable attention in the automotive industry, considering that it significantly reduces development cost and time in optimization of materials and processes through computational advancement. This study presents a comprehensive review of ICME activities in advanced automotive manufacturing technology, which focuses on the life cycle of the automotive body structure such as structural material design, manufacturing process optimization, and reliability improvement in service quality. Results show that the ICME approach has been widely implemented in automotive manufacturing processes, from development of lightweight materials to performance management. However, further advances and technological strategies should be sought to develop more robust methodologies that can replace conventional experiment‐based design approaches.

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Section: Press Hardening Technologymentioning

confidence: 99%

Integrated Computational Materials Engineering for Advanced Automotive Technology: With Focus on Life Cycle of Automotive Body Structure

Park

Min

Kim

et al. 2022

Adv Materials Technologies

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“…At the same time, the shape accuracy of the part made by hot stamping process is very high owing to the high formation temperatures and several‐second holding in the dies. [ 6,7 ]…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the shape accuracy of the part made by hot stamping process is very high owing to the high formation temperatures and several-second holding in the dies. [6,7] Originally, the hot stamping steel was bare blank without coating. Thus, the oxidation of the steel is severe after the hot stamping process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Formability of Zn‐Coated Hot Stamping Steel

Zheng

et al. 2022

steel research int.

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Herein, the effect of heat treatment with die quenching on Zn‐coated hot stamping steel is analyzed. Heating temperatures are 850, 880, 900, and 930 °C, and soaking times are 4 and 8 min. Then, microstructure, hardness, coating layer morphology, element diffusion and distribution, formation of microcrack and microvoid, and oxidation are analyzed. Results reveal that as heating temperature increases, the Vickers hardness of Zn‐coated hot stamping steel increases when soaking time is 4 min, while it decreases when soaking time is 8 min. The least average hardness value is still larger than 460, resulting from the formation of the martensitic phase. The diffusion tends to be significant as heating temperature and soaking time increase. Both the diffusion and the evaporation affect the thickness of the coating layer remarkably. The average layer thickness is at least 18.2 μm. Microcrack generates in the coating layer due to different thermal expansions between substrate and coating layer and the melting of Zn or Zn–Fe binary phase with high content of Zn. Microvoid forms in the coating layer, resulting from the Kirkendall effect and oxidation of the Zn element. Moreover, with the increase in heating temperature and soaking time, Fe2O3 is also generated on the coating surface along with ZnO.

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“…[3,4] At the same time, the hot stamped component has high shape accuracy due to the insignificant springback. [5,6] During the hot stamping process, the blank is first heated to the austenitizing temperature generally above 880 C, and then the heated blank is quickly moved to the dies for stamping and quenching. [7,8] The martensite phase is formed completely during die quenching, which resulted in the extra high strength.…”

Section: Introductionmentioning

confidence: 99%

Influence of Process Parameters on the Formability of Zn‐Coated Hot Stamping Steel

Rong

et al. 2021

steel research int.

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Herein, the effect of process parameters on the formability of Zn‐coated stamping steel is analyzed, including heating temperature, soaking time, forming temperature, deformation level, and strain rate. The studied heating temperature ranges from 850 to 930 °C; the soaking time ranges from 3 to 7 min; the deformation level ranges from 10% to the break; and the strain rate ranges from 0.1 to 10 s−1. The thermal mechanical property is analyzed and fitted using the power model of allometric equation. The length of microcrack is measured using scanning electron microscope (SEM). It can be concluded that the true stress decreases with the increase of the heating temperature and soaking time. The decrease of the forming temperature and the increase of the strain rate lead to the increase of the true stress. The critical strain in the thermal tension process is about 0.35. The length of microcrack is below 10 μm for most of the cases. The optimal process parameters are proposed. The heat temperature should be at the range of 850−900 °C. The soaking time should not be larger than 5 min. The fracture is typical ductile fracture with dimples, resulting from the growth and emerging of microvoids.

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Hot stamping forming and finite element simulation of USIBOR1500 high-strength steel

Cited by 15 publications

References 18 publications

Integrated Computational Materials Engineering for Advanced Automotive Technology: With Focus on Life Cycle of Automotive Body Structure

Integrated Computational Materials Engineering for Advanced Automotive Technology: With Focus on Life Cycle of Automotive Body Structure

Effect of Heat Treatment on the Formability of Zn‐Coated Hot Stamping Steel

Influence of Process Parameters on the Formability of Zn‐Coated Hot Stamping Steel

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