Dr. Shamini Janasekaran Profile

Dr. Shamini Janasekaran

at SEGi Univ

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Proceedings Article | 16 October 2019 Paper

Feasibility study on autogenously lap joint between non-ferrous metal alloys using low power fiber laser

Shamini Janasekaran, Nashrah Hani Jamadon, Farazila Yusof

Proceedings Volume 11205, 1120503 (2019) https://doi.org/10.1117/12.2542500

KEYWORDS: Laser welding, Metals, Aluminum, Fiber lasers, Nickel, Resistance, Manufacturing, Corrosion, Chromium, Copper

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Dissimilar joining between metals has been always a desired need by many industries mainly on automotive. The urge to replace the conventional joining methods to a flexible technique such as fiber laser beam welding has created the demand for more feasibility studies on dissimilar metals. Despite of their thermal coefficient differences in them, the time reduction and higher productivity using fiber laser welding has led to studies on dissimilar nickel alloy, Inconel 600 and aluminum alloy; AA2024-0. Both these metals were laser welded at overlap configuration without any filler in between at a low power Yb-fiber laser. The feasibility studies proved optimum welding speed can influence the joining possibilities and the results can be investigated using optical microscopy (OM). The cross-section of the joints revealed that the fusion zone (FZ) and heat affected zones (HAZ) are wider when welding speed decreases with lower laser power. The energy from low power fiber laser is able to melt the parent metals forming a molten pool to allow liquid metal to flow smoothly between top and bottom layers. It can be concluded that further studies on laser welding with a low laser power between non-ferrous metals are possible.

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