A binding scheme to minimize thinning of formed tailor welded blanks

Seyam, Mahmoud; Shazly, Mostafa; El-Mokadem, Alaa; Wifi, Abdalla S.

doi:10.1007/s00170-018-1686-6

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…A sufficient bond between the first layers and the underlaying substrate is essential to keeping components in place until process completion. In analogy to metal fusion welding, compatibility is typically existent between the powder metal and a substrate of the same kind [50][51][52]. The selective laser melting and subsequent solidification of unalloyed tungsten on unalloyed tungsten substrate encourages a homologous wetting condition, in which nucleation energy barriers are typically diminished.…”

Section: Substratementioning

confidence: 99%

Laser Powder Bed Fusion of Unalloyed Tungsten: A Review of Process, Structure, and Properties Relationships

Seyam

Koshy

Elbestawi

2022

Metals

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Tungsten (W) as a structural component has grown roots in many special applications owing to its radiation-shielding capabilities and its properties at elevated temperatures. The high ductile-brittle transition temperature (DBTT) and the very high melting point of tungsten however have limited its processability to certain technologies such as powder metallurgy. Laser powder bed fusion (LPBF) has been introduced in recent years as an alternative for manufacturing tungsten parts to overcome the design limitations posed by powder metallurgy technology. A review of the literature shows significant improvements in the quality of tungsten components produced by LPBF, implying a strong potential for manufacturing tungsten with this technology and a need for further research on this subject. This review paper presents the current state-of-the-art in LPBF of unalloyed tungsten, with a focus on the effect of process parameters on the developed structure/properties and identifies current knowledge gaps.

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Section: Substratementioning

confidence: 99%

Laser Powder Bed Fusion of Unalloyed Tungsten: A Review of Process, Structure, and Properties Relationships

Seyam

Koshy

Elbestawi

2022

Metals

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“…The application of tailor rolled blank (TRB) and tailor welded blanks (TWBs) in automobile industry can significantly reduce the weight of automobile and promote the process of lightweight [1][2][3][4][5][6]. The TWBs stamping technology is to splice two or more sheets together by welding method and perform the press forming.…”

Section: Introductionmentioning

confidence: 99%

Optimization of multi-objective quality of TWBs square box deep-drawing process parameters

Liu

Guan

Gao

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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There are many process parameters involved in the deep drawing of TWBs. Each parameter has different effects on the forming quality and intercrosses each other. It is difficult to establish the relationship between the process parameters and forming quality in traditional methods. The TWBs square box part of the same material with different thickness was taking as the research object, and the common defects of the deep drawing forming part was analysed. The forming process was simulated by using finite element software DYNAFORM, considering five factors, including the thickness combination, the friction coefficient, the punch and die corner radius, the three types of variable blank holder force loading method, as well as the intercross between the variable blank holder force loading method and other factors on the forming quality of the TWBs square box part. The orthogonal test was designed to determine the important order of the various factors under different indicators, and the optimal combination of process parameters was determined by combining the AHP and grey system theory. The optimized parameters of square box part were verified by the finite element method and the deep-drawing test. The results show that the thickness distribution is reasonable, the welding seam movement is small, and there is obvious improvement in the forming quality.

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“…1(c,d). Henceforth, researchers have also combined the two approaches experimentally achieving significant reduction in thinning [15]. The utilization of draw beads is also employed to restrict the movement of welded sheets during forming operations.…”

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confidence: 99%

Specifics of Formability in Recent Developments of Tailor-Welded Blanks

Bajaj

Siddiquee

Chen

et al. 2023

Natl. Acad. Sci. Lett.

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This article serves as a compendium to the design engineers proceeding to manufacture geometrically complex functional components having an array of mechanical properties owing to a variety of metallic materials that are welded together. Such dynamic attempts require the knowhow of forming behavior of welded sheet metals, which are carefully explicated based on recent advances. The thickness and/or strength dissimilarity across the welded microstructures give birth to distortion and warpage in the welded sheets. The warpage during the forming operation renders the workpiece useless. The modern approaches to tackling the warpage phenomena like weld line movement and springback are highlighted with emphasis on unification of finite element, artificial neural networks, genetic algorithms, and analytical methods. This is necessary for the free form forming operations on welded sheets to provide creative edge and flexibility in design. Significance statementThis work provides a multitude of solutions for the formability issues in free forming of tailor welded blanks through meticulous study of recently published literature. The decrease in production lead times, consumption of resources, waste generation, etc. can be simultaneously achieved with an increase in part complexity in the manufacturing industry through the current study.

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A binding scheme to minimize thinning of formed tailor welded blanks

Cited by 5 publications

References 11 publications

Laser Powder Bed Fusion of Unalloyed Tungsten: A Review of Process, Structure, and Properties Relationships

Laser Powder Bed Fusion of Unalloyed Tungsten: A Review of Process, Structure, and Properties Relationships

Optimization of multi-objective quality of TWBs square box deep-drawing process parameters

Specifics of Formability in Recent Developments of Tailor-Welded Blanks

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