Speaker
Description
Processing of highly reflective metals such as copper and gold remains a significant challenge in laser-based additive manufacturing due to low absorption at infrared wavelengths, leading to process instabilities, excessive spatter, and defect formation. Recent advances in high-power blue laser sources offer a promising alternative, as these materials exhibit substantially higher absorption in the blue wavelength regime. In this study, the application of blue laser irradiation for the processing of reflective metals is investigated with a focus on process stability and defect mitigation. The results demonstrate a more stable melt pool behavior compared to conventional infrared laser processing, characterized by reduced spatter generation and a lower tendency for defect formation. Improved energy coupling enables consistent melting and smoother material consolidation, highlighting the potential of blue lasers to overcome long-standing limitations associated with reflective materials in additive manufacturing. Overall, the findings indicate that blue laser technology represents a promising pathway for enhancing process reliability and material quality in the additive manufacturing of copper, gold, and other highly reflective metals.
| Speaker Country | Switzerland |
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| Would you like to publish your paper in the special issue of BHM "Berg- und Hüttenmännische Monatshefte" | Yes |