Weld-brazing or welding-brazing: Addressing the inconsistency in the naming convention used for this transformative non-fusion joining technique

Khan, M. Shehryar; Zhou, Y.

doi:10.1016/j.mfglet.2023.02.002

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…The automotive industry has a constant requirement to reduce vehicle weight while improving their crashworthiness and safety [1][2][3][4][5][6]. This demand can be met by using tailor-welded blanks (TWBs) [7][8][9][10], which can be used to produce functionally-graded and highly optimized components [11].…”

Section: Introductionmentioning

confidence: 99%

Recent advances in mitigating fusion zone softening during laser welding of Al-Si coated 22MnB5 press-hardened steels

Khan¹

2023

Mater. Res. Express

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The automotive industry is seeking reduced vehicle weight and improved safety of newer generation vehicles to meet global zero-emission targets. Tailor-welded blanks (TWBs) offer a solution to meet this demand by producing lightweight yet strong components, such as the B-pillar, using laser-welded press-hardened steels. The laser welding of Al-Si coated PHSs causes the coating to be diluted into the melt pool which can cause premature failure due to the presence of a softer ferrite phase in an otherwise martensitic joint. Currently, laser ablation is used to remove the Al-Si layer prior to welding, but other techniques have been proposed which can potentially bypass the need to remove the coating and instead, welding directly through the coating. This study examines the problem of fusion zone (FZ) softening during the laser welding of Al-Si coated 22MnB5 and discusses recently proposed novel solutions that can solve the issue without the prior removal of the Al-Si coating before welding or using expensive filler materials during welding. The paper concludes with several viable recommendations for future work that can be used as potential directions for further research.

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