Characterization of 3D Printed Stainless Steel SS316L Powders Joined by TIG-, Plasma- and Laser Welding
Harraz, M., El-Mahallawy,, N., Abd Elghany, K., Schleser, M., Palkowski, H., Klingner, A. (2017). Characterization of 3D Printed Stainless Steel SS316L Powders Joined by TIG-, Plasma- and Laser Welding. EKB Journal Management System, 1(2), 91-95. doi: 10.21608/ejmtc.2017.1052.1045
M. Harraz; N. El-Mahallawy,; K. Abd Elghany; M. Schleser; H. Palkowski; Anke Klingner. "Characterization of 3D Printed Stainless Steel SS316L Powders Joined by TIG-, Plasma- and Laser Welding". EKB Journal Management System, 1, 2, 2017, 91-95. doi: 10.21608/ejmtc.2017.1052.1045
Harraz, M., El-Mahallawy,, N., Abd Elghany, K., Schleser, M., Palkowski, H., Klingner, A. (2017). 'Characterization of 3D Printed Stainless Steel SS316L Powders Joined by TIG-, Plasma- and Laser Welding', EKB Journal Management System, 1(2), pp. 91-95. doi: 10.21608/ejmtc.2017.1052.1045
Harraz, M., El-Mahallawy,, N., Abd Elghany, K., Schleser, M., Palkowski, H., Klingner, A. Characterization of 3D Printed Stainless Steel SS316L Powders Joined by TIG-, Plasma- and Laser Welding. EKB Journal Management System, 2017; 1(2): 91-95. doi: 10.21608/ejmtc.2017.1052.1045

Characterization of 3D Printed Stainless Steel SS316L Powders Joined by TIG-, Plasma- and Laser Welding

Journal of Engineering Science and Military Technologies
Article 5, Volume 1, Issue 2, October 2017, Page 91-95  XML PDF (934.9 K)
Document Type: Original Article
DOI: 10.21608/ejmtc.2017.1052.1045
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Authors
M. Harraz1; N. El-Mahallawy,2; K. Abd Elghany3; M. Schleser4; H. Palkowski5; Anke Klingner email 6
1Engineering Materials, Faculty of Engineering Materials Science, The German University in Cairo, New Cairo, Egypt
2Engineering Materials, Faculty of Engineering Materials Science, The German University in Cairo, New Cairo, Egypt,
3Laser and Additive Manufacturing Lab, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt
4FH Aachen, University of Applied Sciences, D-52064 Aachen, Germany
5IMET, Institut fuer Metallurgie, TU Clausthal, Germany
6The German University in Cairo
Abstract
Additive manufacturing or 3D printing is becoming more and more common in industry fabrication, especially for spare parts which cannot be found easily on the local market and for tailor made parts. For large parts and due to its size limitations, it is sometimes required to join 3D printed parts with other 3D printed parts or conventionally produced parts. In this work, 3D printed flat plates 4mm thick were prepared by direct laser sintering of SS316L powders. Mechanical properties and microstructure were investigated. Elongation and maximum tensile stress of 3D printed flat plates are with 1.3% and 704MPa smaller than the values 2% and 1241MPa of cold-rolled SS316 parts. The 3D printed flat plates were joined by welding using TIG welding, plasma welding and laser welding. The welded joints were tested for their mechanical properties and microstructure. For the used welding conditions, the fracture occurred outside the weld zone. The maximum stress of the welded parts is 65-80% of 3D printed flat plates. The elongation of the welded parts is above 3%.
Keywords
3D printing; additive manufacturing; SLM; SS316L; welding
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