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Surface Structuring by Laser Remelting (WaveShape): Microstructuring of Ti6Al4V for a Small Laser Beam Diameter and
1Fraunhofer Institute for Applied Optics and Precision Engineering (IOF), Albert-Einstein-Straße 7, 07745 Jena, Germany 2 Chair for Laser Technology, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany.
Micromachines
|July 2, 2021
Summary
Surface structuring by laser remelting (WaveShape) creates tailored topographies on Ti6Al4V without material loss. High scan speeds enhance efficiency and enable fine feature generation for advanced surface engineering.
Area of Science:
- Materials Science and Engineering
- Surface Engineering
- Additive Manufacturing
Background:
- Surface appearance is critical for component functionality.
- Laser-based micromachining is vital for creating precise surface topographies.
- Surface structuring by laser remelting (WaveShape) is a novel technique without material loss.
Purpose of the Study:
- Investigate surface topography evolution on Ti6Al4V using the WaveShape process.
- Determine the effect of laser beam diameter and scan speeds on feature generation.
- Analyze the efficiency of WaveShape at high scan speeds.
Main Methods:
- Utilized laser-based micromachining with the WaveShape technique.
- Focused on Ti6Al4V alloy.
- Employed a laser beam diameter of 50 µm and scan speeds exceeding 100 mm/s, up to 500 mm/s.
Main Results:
- Achieved surface features with aspect ratios close to 1:1.
- Successfully structured wavelengths below 500 µm at scan speeds up to 500 mm/s.
- Demonstrated significantly increased process efficiency (structure height per unit time) at high scan speeds.
Conclusions:
- The WaveShape process is effective for creating high-aspect-ratio surface features on Ti6Al4V.
- High scan speeds are beneficial for both structuring fine wavelengths and improving process efficiency.
- WaveShape offers a promising approach for advanced surface engineering applications.
