Details
| Original language | English |
|---|---|
| Title of host publication | High-Power Laser Materials Processing |
| Subtitle of host publication | Lasers, Beam Delivery, Diagnostics, and Applications V |
| Publisher | SPIE |
| ISBN (electronic) | 9781628419764 |
| Publication status | Published - 18 Mar 2016 |
| Externally published | Yes |
| Event | High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V - San Francisco, United States Duration: 16 Feb 2016 → 18 Feb 2016 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 9741 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
Pulsed laser sources with pulse durations in the millisecond regime can be used for spot welding and seam welding of aluminum. Seam welds are generally produced with several overlapping spot welds. Hot cracking has its origin in the solidification process of individual spot welds which determines the cracking morphology along the seam welding. This study used a monitoring unit to capture the crack geometry within individual spot welds during seam welding to investigate the conditions for initiation, propagation and healing (re-melting) of solidification cracking within overlapping pulsed laser welds. The results suggest that small crack radii and high crack angles with respect to welding direction are favorable conditions for crack healing which leads to crack-free seam welds. Optimized pulse shapes were used to produce butt welds of 0.5 mm thick 6082 aluminum alloys. Tensile tests were performed to investigate the mechanical strength in the as-welded condition.
Keywords
- Aluminum, Hot cracking, Pulsed laser welding
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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- Apa
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- BibTeX
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High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V. SPIE, 2016. 97410H (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9741).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Monitoring of solidification crack propagation mechanism in pulsed laser welding of 6082 aluminum
AU - Von Witzendorff, Philipp
AU - Kaierle, Stefan
AU - Suttmann, Oliver
AU - Overmeyer, Ludger
PY - 2016/3/18
Y1 - 2016/3/18
N2 - Pulsed laser sources with pulse durations in the millisecond regime can be used for spot welding and seam welding of aluminum. Seam welds are generally produced with several overlapping spot welds. Hot cracking has its origin in the solidification process of individual spot welds which determines the cracking morphology along the seam welding. This study used a monitoring unit to capture the crack geometry within individual spot welds during seam welding to investigate the conditions for initiation, propagation and healing (re-melting) of solidification cracking within overlapping pulsed laser welds. The results suggest that small crack radii and high crack angles with respect to welding direction are favorable conditions for crack healing which leads to crack-free seam welds. Optimized pulse shapes were used to produce butt welds of 0.5 mm thick 6082 aluminum alloys. Tensile tests were performed to investigate the mechanical strength in the as-welded condition.
AB - Pulsed laser sources with pulse durations in the millisecond regime can be used for spot welding and seam welding of aluminum. Seam welds are generally produced with several overlapping spot welds. Hot cracking has its origin in the solidification process of individual spot welds which determines the cracking morphology along the seam welding. This study used a monitoring unit to capture the crack geometry within individual spot welds during seam welding to investigate the conditions for initiation, propagation and healing (re-melting) of solidification cracking within overlapping pulsed laser welds. The results suggest that small crack radii and high crack angles with respect to welding direction are favorable conditions for crack healing which leads to crack-free seam welds. Optimized pulse shapes were used to produce butt welds of 0.5 mm thick 6082 aluminum alloys. Tensile tests were performed to investigate the mechanical strength in the as-welded condition.
KW - Aluminum
KW - Hot cracking
KW - Pulsed laser welding
UR - http://www.scopus.com/inward/record.url?scp=84974721869&partnerID=8YFLogxK
U2 - 10.1117/12.2209630
DO - 10.1117/12.2209630
M3 - Conference contribution
AN - SCOPUS:84974721869
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - High-Power Laser Materials Processing
PB - SPIE
T2 - High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V
Y2 - 16 February 2016 through 18 February 2016
ER -