Fatigue properties of laser-welded laser powder bed fusion manufactured 316L parts

Rautio, Timo; Mäkikangas, Jarmo; Kumpula, Jani; Järvenpää, Antti (2022-10-01)
 
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https://doi.org/10.1007/978-981-19-4290-7_13

Rautio, Timo
Mäkikangas, Jarmo
Kumpula, Jani
Järvenpää, Antti
Springer Nature
01.10.2022

Rautio, T., Mäkikangas, J., Kumpula, J., Järvenpää, A. (2023). Fatigue Properties of Laser-Welded Laser Powder Bed Fusion Manufactured 316L Parts. In: Chen, SM. (eds) Proceedings of 10th International Conference on Chemical Science and Engineering. ICCSE 2021. Springer Proceedings in Materials, vol 21. Springer, Singapore. https://doi.org/10.1007/978-981-19-4290-7_13

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doi:https://doi.org/10.1007/978-981-19-4290-7_13
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Abstract

Laser welding (LW) is a promising method for joining the additive manufactured (AM) laser powder bed fusion manufactured (LPBF) 316L parts and increases the use cases for the technique by overcoming some of its limitations. The fatigue properties of LW LPBF 316L parts have not been previously studied, but it is an important factor in wide range of products, where the weight and lifetime should be optimized. The LW joints are analyzed by optical microscopy, tensile testing and bending fatigue testing, and the results show that this type of joints can be successfully used to manufacture products from LPBF parts. The achieved strength (over 627 MPa) and fatigue limit of over 200 MPa with the welds were comparable to the base material.

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