26.3.2025 13:30 - 26.3.2025 15:00
Gümüşsuyu Kampüsü, Gümüşsuyu Kampüsü
Akademik
Advancements in high-power laser systems in the 1980s enabled the development of metal additive manufacturing.
Despite its innovative approach to producing metal components, the technology faced challenges competing with well-established
conventional methods, requiring cost efficiency, defect-free outputs, and distinct advantages to succeed. This seminar begins with laser
surface remelting of Al alloys to uncover key mechanisms underlying AM. Topics include microstructure transformation (from flakes to fibers),
refinement (over 100-fold), the formation of fully eutectic areas (up to 90% of the processed area), and the extension of Al solubility limits due to high
cooling rates. These insights are fundamental to understanding the process's potential.We will, then, explore AM of commercial-grade Al alloys, such as
7075 and 6061-RAM2, with a focus on online defect detection using Optical Emission Spectroscopy (OES). This technique allows real-time monitoring
of plasma signals to identify defects like voids and cracks within seconds, achieving 87% accuracy when validated against µCT data.