Deformation Properties of Tailor Welded Blank Made of Dual Phase Steels

Schrek, Alexander; Švec, Pavol; Gajdošová, Veronika

doi:10.1515/ama-2016-0007

Cited by 7 publications

(11 citation statements)

References 16 publications

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“…In the calculation of the stress-strain diagram of the TWB samples, the thickness of the thinner sheet was considered as the initial thickness. Cracking of the sample was not observed in the FZ or HAZ, but on the side of the material with lower mechanical properties or lower thickness [24].…”

Section: Tensile Tests and Formabilitymentioning

confidence: 86%

Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels

Zdravecká

Slota

2019

Metals

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Tailor welded blanks (TWB) represent an anisotropic and non-homogenous material. The knowledge of the mechanical properties and microstructure of the fusion zone and heat-affected zone (HAZ) obtained with laser welding is essential to ensure the reliability of the process. In this paper, laser-welded hot-dip Zn-coated low carbon microalloyed steels with different thickness and mechanical properties were used. The mechanical properties of the laser-welded blanks were determined by tensile tests and formability by Erichsen cupping tests. In addition, the pore formation during the laser welding process was analyzed. The microstructural analysis confirmed the formation of the favorable structure of the weld metal and the heat-affected zone without the presence of martensite. The obtained results showed that it is possible to produce TWBs with suitable mechanical properties by laser welding.

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Section: Tensile Tests and Formabilitymentioning

confidence: 86%

Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels

Zdravecká

Slota

2019

Metals

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“…The evolution of the magnetic domains in a ferromagnetic material will certainly cause local stress. For example, the stress caused by the movement of domain walls in a local area was deduced in our former work [20] and can be expressed by σ ≈ 2 3λ 1 (μ 0 × cos θ + ) 2 − 2 1 3λ s…”

Section: Discussionmentioning

confidence: 99%

“…Tailor welded blanks (TWBs) are made up of several steels with different materials, thicknesses and/or coatings to meet the diverse requirements of the components on the properties and thickness of the material [1]. Compared to other welding methods, laser welding can create a narrow fusion zone (FZ) and heat-affected zone (HAZ), and has become a widely used welding method of TWBs in the modern automobile industry [2,3].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Improvement of Laser Tailor Welded Blanks of DP600 Steel by Magnetic Treatment

Song

et al. 2017

Metals

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Abstract:The influence of magnetic treatment on the yield strength, the ultimate tensile strength and the elongation of laser tailor welded blanks (TWBs) of DP600 steel was investigated by uniaxial tensile tests. The experimental results showed that the yield strength and the ultimate tensile strength of the TWBs had only a slight change, but the elongation increased by 13.90%-36.23% after the magnetic treatment. The dislocation distributions in the fusion zone (FZ) and the heat-affected zone (HAZ) were observed respectively by transmission electron microscopy (TEM). It was found that after magnetic treatment, the dislocations in both the FZ and the HAZ of the TWBs increased and showed a relatively uniform distribution. The mechanism of the mechanical property improvement of the TWBs by the magnetic treatment was then revealed on the basis of the relationship model between the dislocation and shear strain, considering the evolution of magnetic domains and Frank-Read dislocation multiplication in a magnetic field.

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“…(Hillmann, 2012) Since 2006 different car manufacturers e.g. among others BMW, Mercedes, Volkswagen, Volvo and Ford are integrating Tailor Rolled Blanks (TRBs) in press hardening process ( Figure 2) (Schrek et al, 2016). (Schrek et al, 2016) Tailor Welded Blanks…”

Section: Tailor Rolled Blanksmentioning

confidence: 99%

Optimization of the Production Process of an A-Pillar using a Differential Thickness Profile Approach via FEA

Saba¹,

Rishmany²,

Tawk³

et al. 2017

AJTE

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Energy efficiency of car body structures includes, in addition to the obvious aspect of fuel consumption, an ultra-high level of passenger safety. However, with traditional manufacturing processes, an acceptable level of passenger safety results in an increased car body weight. The realization of ultra-high strength properties and, at the same time, improved structural weight could be achieved through different tailoring routes such as: Tailor-Rolling, Tailor-Welding, and differential thermomechanical processes. In this technological context, an FE model is developed for the improvement of tailored-rolled technology through which an optimization of state of the art thickness can be realized by using different high-strength materials in the proposed FE model of an existing A-Pillar geometry.

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Deformation Properties of Tailor Welded Blank Made of Dual Phase Steels

Cited by 7 publications

References 16 publications

Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels

Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels

Mechanical Properties Improvement of Laser Tailor Welded Blanks of DP600 Steel by Magnetic Treatment

Optimization of the Production Process of an A-Pillar using a Differential Thickness Profile Approach via FEA

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