Abstract
Laser heating of titanium and steel surface is carried out and temperature field as well as the size of the melt pool developed at the irradiated surface is predicted. The repetitive laser pulses are introduced and Marangoni effect is incorporated in the analysis to obtain the flow field in the melt pool. The laser pulse parameter is introduced to account for the influence of laser pulse intensity distribution on temperature field and the melt size. The influence of laser scanning speed on heating is also incorporated in the simulations. An experiment is carried out to verify temperature predictions at the surface. It is found that temperature predictions agree well with the experimental data. The influence of laser pulse intensity parameter and laser scanning speed on temperature and melt pool size is significant, which is more pronounced for steel.
| Original language | English |
|---|---|
| Pages (from-to) | 230-241 |
| Number of pages | 12 |
| Journal | International Journal of Thermal Sciences |
| Volume | 54 |
| DOIs | |
| State | Published - Apr 2012 |
Keywords
- Heating
- Laser
- Marangoni
- Melt pool
- Steel
- Titanium
ASJC Scopus subject areas
- Condensed Matter Physics
- General Engineering
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