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Lasers in Manufacturing and Materials Processing

Erschienen in:

07.08.2019

The Influence of Shielding Gases on Solidification Structures and Grain Size of AISI 304 Stainless Steel Fiber Laser Welds

verfasst von: K. M. Hafez, M. M. Ghanem, M. A. Morsy

Erschienen in: Lasers in Manufacturing and Materials Processing | Ausgabe 4/2019

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Abstract

In laser welding, shielding gas should be carefully selected so that welding joints have an acceptable weld profile and weld quality. Bead-on-plate welding of AISI 304 stainless steel plates with 5 kW continuous wave (CW) fiber laser was performed with different nitrogen and argon mixtures. Fusion zone (FZ) morphology and microstructural characteristics of welds were investigated. The outcome was that nitrogen had a great effect on the final microstructure of the fusion zone, reducing the ferrite content and changing the microstructure grain size which will reflect on the mechanical properties of the weld zone.

Nächster Artikel Modeling and Optimization of Process Parameters for Laser Powder Bed Fusion of AlSi10Mg Alloy

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Titel: The Influence of Shielding Gases on Solidification Structures and Grain Size of AISI 304 Stainless Steel Fiber Laser Welds
verfasst von: K. M. Hafez
M. M. Ghanem
M. A. Morsy
Publikationsdatum: 07.08.2019
Verlag: Springer US
Erschienen in: Lasers in Manufacturing and Materials Processing / Ausgabe 4/2019
Print ISSN: 2196-7229
Elektronische ISSN: 2196-7237
DOI: https://doi.org/10.1007/s40516-019-00100-3

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