Laser polishing of additive manufactured Ti alloys

By C. P. Ma, Y. Guan, Wei Zhou. 2017

243 citations recorded by the source corpus.

Abstract Laser-based additive manufacturing has attracted much attention as a promising 3D printing method for metallic components in recent years. However, surface roughness of additive manufactured components has been considered as a challenge to achieve high performance. In this work, we demonstrate the capability of fiber laser in polishing rough surface of additive manufactured Ti-based alloys as Ti-6Al-4V and TC11. Both as-received surface and laser-polished surfaces as well as cross-section subsurfaces were analyzed carefully by White-Light Interference, Confocal Microscope, Focus Ion Beam, Scanning Electron Microscopy, Energy Dispersive Spectrometer, and X-ray Diffraction. Results revealed that as-received Ti-based alloys with surface roughness more than 5 µm could be reduce to less than 1 µm through laser polishing process. Moreover, microstructure, microhardness and wear resistance of laser-polished zone was investigated in order to examine the thermal effect of laser polishing processing on the substrate of additive manufactured Ti alloys. This proof-of-concept process has the potential to effectively improve the surface roughness of additive manufactured metallic alloy by local polishing method without damage to the substrate.

Subfields: Computational Mechanics, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/25892132470900b1c0aff91bc829f8d5a366bfe1

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In Computational Mechanics

1. Swee Hock Yeo
2. A. Nagalingam
3. Jian-Yuan Lee

In Mechanical Engineering

1. Swee Hock Yeo
2. Zhiheng Hu
3. A. Nagalingam
4. Jun Wei
5. Dragos Axinte
6. A. Clare
7. Z. Liao
8. Jian-Yuan Lee

Citations in the corpus

• Development of Micro Selective Laser Melting: The State of the Art and Future Perspectives (2019, background): “Laser polishing or laser re-melting has emerged as a potential cost-effective surface-finishing process for SLM surfaces that can use the same laser source as AM [115,121,129].”
• Improved fatigue strength of additively manufactured Ti6Al4V by surface post processing (2020, methodology): “Witkin et al. [10] came to the same conclusion in their study of laser polished and abrasive polished L-PBF IN625 in which no signi fi cant increase of the fatigue strength occurred even though the surface roughness was reduced considerably.”
• Surface integrity in metal machining - Part II: Functional performance (2021, methodology): “oxygen in the processing gas atmosphere [214], (c) Ti6Al4V made by laser additive manufacturing [218] and (d) Ti–Al–Mo–Zr–Si made by laser additive”
• A review on the state-of-the-art of surface finishing processes and related ISO/ASTM standards for metal additive manufactured components (2020, background): “Yes (Ma, Guan, and Zhou 2017; Marimuthu et al. 2015) Ni-based Alloy (e.g. F3055, F3056, etc) Yes (Mohammadian, Turenne, and Brailovski 2018) Yes (Guo et al. 2019) N.A.”