Details
| Original language | English |
|---|---|
| Title of host publication | High-Power Laser Materials Processing |
| Subtitle of host publication | Applications, Diagnostics, and Systems XII |
| Editors | Stefan Kaierle, Klaus R. Kleine |
| Publisher | SPIE |
| ISBN (electronic) | 9781510659339 |
| Publication status | Published - 15 Mar 2023 |
| Event | High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII 2023 - San Francisco, United States Duration: 1 Feb 2023 → 2 Feb 2023 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 12414 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
The coaxial Laser Double-wire Directed Energy Deposition (LD-DED) process is capable of providing two wire materials simultaneously into a common processing zone. Thus, in-situ production of alloys in a local manner or across the entire sample can be realized with the characteristic high material utilization of the laser wire Directed Energy Deposition (DED) processes. Fabricated samples show a homogenous distribution of alloying elements across single welding seams enabling a functionally graded transition zone along multi-layer samples. This work shows the potentials of the LD-DED process for the production of Functional Graded Materials (FGM). Therefore, the process is displayed and single welding seams are examined regarding the element distribution along the seam with a graded material distribution. The samples are produced with a horizontally graded material transition using 1.4430 and 1.4718 stainless steel wires. All samples are fabricated using the multiple Diode Coaxial Laser (DiCoLas) processing head of the Laser Zentrum Hannover e.V. The processing head provides the materials under a small angle of incidence and utilizes three fiber coupled laser diodes to supply the necessary thermal energy for the melting process of the base and wire materials. Using Energy-Dispersive X-ray spectroscopy (EDX) line-scans and mappings to determine the element constituents along the cross-section, a graded transition of elements in the horizontal direction can be detected. Images captured with a Keyence VK-X1100 3D-laser-scanning microscope provide information of the cross-section quality regarding material defects and surface quality. Furthermore, the Vickers hardness progression along the building direction is measured.
Keywords
- DED, DiCoLas, Functional Graded Material, Laser Double-wire Directed Energy Deposition
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII. ed. / Stefan Kaierle; Klaus R. Kleine. SPIE, 2023. 124140E (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12414).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Material efficient production of Functionally Graded Materials using coaxial Laser Double-Wire Directed Energy Deposition
AU - Schwarz, Nick
AU - Lammers, Marius
AU - Hermsdorf, Jörg
AU - Kaierle, Stefan
AU - Ahlers, Henning
AU - Lachmayer, Roland
N1 - Funded by the Ministry for Science and Culture of Lower Saxony (MWK) – School for Additive Manufacturing SAM
PY - 2023/3/15
Y1 - 2023/3/15
N2 - The coaxial Laser Double-wire Directed Energy Deposition (LD-DED) process is capable of providing two wire materials simultaneously into a common processing zone. Thus, in-situ production of alloys in a local manner or across the entire sample can be realized with the characteristic high material utilization of the laser wire Directed Energy Deposition (DED) processes. Fabricated samples show a homogenous distribution of alloying elements across single welding seams enabling a functionally graded transition zone along multi-layer samples. This work shows the potentials of the LD-DED process for the production of Functional Graded Materials (FGM). Therefore, the process is displayed and single welding seams are examined regarding the element distribution along the seam with a graded material distribution. The samples are produced with a horizontally graded material transition using 1.4430 and 1.4718 stainless steel wires. All samples are fabricated using the multiple Diode Coaxial Laser (DiCoLas) processing head of the Laser Zentrum Hannover e.V. The processing head provides the materials under a small angle of incidence and utilizes three fiber coupled laser diodes to supply the necessary thermal energy for the melting process of the base and wire materials. Using Energy-Dispersive X-ray spectroscopy (EDX) line-scans and mappings to determine the element constituents along the cross-section, a graded transition of elements in the horizontal direction can be detected. Images captured with a Keyence VK-X1100 3D-laser-scanning microscope provide information of the cross-section quality regarding material defects and surface quality. Furthermore, the Vickers hardness progression along the building direction is measured.
AB - The coaxial Laser Double-wire Directed Energy Deposition (LD-DED) process is capable of providing two wire materials simultaneously into a common processing zone. Thus, in-situ production of alloys in a local manner or across the entire sample can be realized with the characteristic high material utilization of the laser wire Directed Energy Deposition (DED) processes. Fabricated samples show a homogenous distribution of alloying elements across single welding seams enabling a functionally graded transition zone along multi-layer samples. This work shows the potentials of the LD-DED process for the production of Functional Graded Materials (FGM). Therefore, the process is displayed and single welding seams are examined regarding the element distribution along the seam with a graded material distribution. The samples are produced with a horizontally graded material transition using 1.4430 and 1.4718 stainless steel wires. All samples are fabricated using the multiple Diode Coaxial Laser (DiCoLas) processing head of the Laser Zentrum Hannover e.V. The processing head provides the materials under a small angle of incidence and utilizes three fiber coupled laser diodes to supply the necessary thermal energy for the melting process of the base and wire materials. Using Energy-Dispersive X-ray spectroscopy (EDX) line-scans and mappings to determine the element constituents along the cross-section, a graded transition of elements in the horizontal direction can be detected. Images captured with a Keyence VK-X1100 3D-laser-scanning microscope provide information of the cross-section quality regarding material defects and surface quality. Furthermore, the Vickers hardness progression along the building direction is measured.
KW - DED
KW - DiCoLas
KW - Functional Graded Material
KW - Laser Double-wire Directed Energy Deposition
UR - http://www.scopus.com/inward/record.url?scp=85159781145&partnerID=8YFLogxK
U2 - 10.1117/12.2648764
DO - 10.1117/12.2648764
M3 - Conference contribution
AN - SCOPUS:85159781145
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - High-Power Laser Materials Processing
A2 - Kaierle, Stefan
A2 - Kleine, Klaus R.
PB - SPIE
T2 - High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII 2023
Y2 - 1 February 2023 through 2 February 2023
ER -