Abstract
To investigate the influence of temperature dependant material properties on model results, 2D FEM calculations for thin sheets of AA5182 aluminium alloy were compared with real-time coaxial camera images of the laser welding process. The results show the importance of taking into account the latent heat of the solid-liquid phase transition in the model. Including temperature dependant values of the thermal conductivity and the specific heat slightly improved the model accuracy. The tendency of a shortening melt pool for higher values of the laser power could not be explained by this 2D model and is expected to be caused by a changing keyhole shape. In the FEM model results, the melt flow shows a clear recirculation with melt flowing forward on the centerline, from the tail region towards the keyhole.
Original language | English |
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Title of host publication | ICALEO 2006 |
Subtitle of host publication | 25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2 |
Editors | Andreas Ostendorf, Paul Hilton, Yongfeng Lu |
Place of Publication | Orlando, FL |
Publisher | Laser Institute of America |
Pages | 479-486 |
Number of pages | 8 |
ISBN (Print) | 0-912035-85-4 |
DOIs | |
Publication status | Published - 30 Oct 2006 |
Event | 25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006 - Scottsdale, United States Duration: 30 Oct 2006 → 2 Nov 2006 Conference number: 25 |
Conference
Conference | 25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006 |
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Abbreviated title | ICALEO |
Country/Territory | United States |
City | Scottsdale |
Period | 30/10/06 → 2/11/06 |
Keywords
- METIS-232376