Non-isothermal deformation behavior and FE simulation of ultrahigh strength BR1500HS steel in hot stamping process

Wang, Wurong; Zhang, Lei; Guo, Meng-xuan; Huang, Lei; Wei, Xicheng

doi:10.1007/s00170-016-8656-7

Cited by 9 publications

(2 citation statements)

References 18 publications

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“…In recent years, the process parameters (such as austenitizing temperature, cooling rate, pressure magnitude, holding time and die exit temperature) in the hot forming process, which directly affect the important factors of its mechanical properties, have been studied intensively and extensively [8][9][10][11][12][13]. Quan et al [14] investigated in depth the effect of the quenching time and the temperature on the phase-transformation characteristics and mechanical property of ultra-high-strength steel.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Microstructures and Mechanical Properties of Nb-V Alloyed Ultra-High Strength Hot Stamping Steel in Austenitizing Process

Liu

Long

et al. 2022

Materials

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Clarifying the influence of Nb and V microalloying on the ultra-high strength hot stamping steel (UHSHSS) and exploring appropriate process parameters are the basis for effectively regulating properties of the final product. In this study, the effects of different austenitizing temperatures and holding times on the phase transitions, grain sizes and mechanical properties of 22MnB5NbV with Nb and V alloyed are studied by using JMatPro thermodynamic calculations and experiments. By comparing with 22MnB5 without Nb and V alloyed, the effects of Nb and V elements on quenching microstructures, grain sizes and mechanical properties of UHSHSS are analyzed. The suitable austenitizing process parameters of 22MnB5NbV have been obtained. The results show that the grain size of Nb-V-alloyed UHSHSS grows with the increase in the austenitizing temperature and holding time. The 22MnB5NbV steel can be completely austenitized while the austenitizing temperatures ≥870 °C and holding time ≥3 min. Combined with the actual production process, the best austenitizing temperature and holding time are 930 °C and 3 min. Under these conditions, the average grain size is 7.7 μm, the tensile strength, elongation and strength-ductility product are 1570.8 MPa, 6.6% and 10.4 GPa·%, respectively. With the addition of Nb and V elements, the nanoscale precipitates lead to the refinement of the quenched structure and grain size, and the comprehensive properties of UHSHSS have been effectively promoted, in which the elongation and strong-plastic products are increased by ~0.6% and ~1.2 GPa·%, respectively.

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Section: Introductionmentioning

confidence: 99%

Evolution of Microstructures and Mechanical Properties of Nb-V Alloyed Ultra-High Strength Hot Stamping Steel in Austenitizing Process

Liu

Long

et al. 2022

Materials

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“…Finite element (FE) simulation is becoming an increasingly important tool in the process design for structural components that are manufactured using the hot stamping method [10,11]. A hot stamping process is a combination of the mechanical field, microstructure, and thermal field [12,13]. Thus, suitable forming processes have to be identified early during part design or tool design to avoid time-consuming and expensive tryouts [14].…”

Section: Introductionmentioning

confidence: 99%

General Research on the Process of the Indirect Hot Stamping Ultra-High-Strength Steel

Tang

et al. 2020

Metals

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Aiming at the need for lightweight requirements of the components in the bus, combined with the advantages of the hot stamping ultra-high-strength steel, a new television (TV) bracket was proposed. The finite element (FE) simulation of the beam part in the TV bracket during the indirect hot stamping process was discussed. After two-stages of pre-forming, the blank was in good formability and without visible cracks. According to the FE simulation results, the punch speed, quenching force, and quenching time significantly affected the temperature, microstructure, hardness, and mechanical properties of the beam part during hot stamping. With the increase of the quenching force and quenching time, the martensite fraction of the beam part was increased. For the beam part, the punch speed should be at least 80 mm/s during the forming stage. For complete quenching, the quenching force should be above 1000 kN and quenching time should be up to 10 s. Based on the parameters from the FE simulation, the forming experiment of the beam part was discussed. Microstructure analyses and microhardness tests as well as tensile tests of the hot stamping beam part were performed. The results confirmed that the FE simulation of the beam part was reliable.

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Hot V-bending behavior of pre-deformed pure titanium sheet assisted by electrical heating

Nie

Zhang

2017

Int J Adv Manuf Technol

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Non-isothermal deformation behavior and FE simulation of ultrahigh strength BR1500HS steel in hot stamping process

Cited by 9 publications

References 18 publications

Evolution of Microstructures and Mechanical Properties of Nb-V Alloyed Ultra-High Strength Hot Stamping Steel in Austenitizing Process

Evolution of Microstructures and Mechanical Properties of Nb-V Alloyed Ultra-High Strength Hot Stamping Steel in Austenitizing Process

General Research on the Process of the Indirect Hot Stamping Ultra-High-Strength Steel

Hot V-bending behavior of pre-deformed pure titanium sheet assisted by electrical heating

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