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Article

Shape Deviation of Surface Structures Produced by WaveShape (Structuring by Laser Remelting) on Ti6Al4V and a Method for Deviation Reduction

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Moscow Engineering Physics Institute, National Research Nuclear University MEPhI, Kashirskoe Shosse 31, 115409 Moscow, Russia
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Center for Design, Manufacturing & Materials, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russia
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Chair for Digital Additive Production, RWTH Aachen University, Campus-Boulevard 73, 52074 Aachen, Germany
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Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Straße 7, 07745 Jena, Germany
*
Authors to whom correspondence should be addressed.
Academic Editor: Evgueni Bordatchev
Micromachines 2021, 12(4), 367; https://doi.org/10.3390/mi12040367
Received: 25 February 2021 / Revised: 16 March 2021 / Accepted: 19 March 2021 / Published: 29 March 2021
(This article belongs to the Special Issue Laser-Based Micromachining, Structuring, and Polishing)
Laser structuring by remelting (WaveShape) is a manufacturing process for metal surfaces in which structures are generated without material removal. The structuring principle is based on the controlled motion of the three-phase line in the area of the solidification front. The contour of the solidification front is imprinted into the remelting track during the continuous solidification process. Typically, harmonic surface structures in the form of sinusoidal oscillations are generated by means of WaveShape with virtually no material loss. However, a significant shape deviation is often observed over a wide range of process parameters. In this study, it was found that much of the shape deviation is concentrated at a spatial wavelength equal to half the spatial wavelength used for structuring. Therefore, an approach to reduce the shape deviations was specifically investigated by superimposing a compensation signal on the harmonic structuring signal. In this approach, a compensation signal with half the spatial wavelength was varied in phase and amplitude and superimposed on the structuring signal. Amplitude and phase shift of the compensation signal were further investigated for selected laser beam diameters and spatial wavelengths. This demonstrated that a shape deviation of harmonic surface structures on titanium alloy Ti6Al4V could be reduced by up to 91% by means of an adapted compensation signal. View Full-Text
Keywords: laser surface treatment; laser structuring; WaveShape; shape deviation; Ti6Al4V; laser processing; surface structuring laser surface treatment; laser structuring; WaveShape; shape deviation; Ti6Al4V; laser processing; surface structuring
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MDPI and ACS Style

Oreshkin, O.; Panov, D.; Kreinest, L.; Temmler, A.; Platonov, A. Shape Deviation of Surface Structures Produced by WaveShape (Structuring by Laser Remelting) on Ti6Al4V and a Method for Deviation Reduction. Micromachines 2021, 12, 367. https://doi.org/10.3390/mi12040367

AMA Style

Oreshkin O, Panov D, Kreinest L, Temmler A, Platonov A. Shape Deviation of Surface Structures Produced by WaveShape (Structuring by Laser Remelting) on Ti6Al4V and a Method for Deviation Reduction. Micromachines. 2021; 12(4):367. https://doi.org/10.3390/mi12040367

Chicago/Turabian Style

Oreshkin, Oleg, Daniil Panov, Laura Kreinest, André Temmler, and Alexander Platonov. 2021. "Shape Deviation of Surface Structures Produced by WaveShape (Structuring by Laser Remelting) on Ti6Al4V and a Method for Deviation Reduction" Micromachines 12, no. 4: 367. https://doi.org/10.3390/mi12040367

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