Surface structure modification of additively manufactured titanium components via femtosecond laser micromachining

Worts, Nathan; Jones, J. A. A.; Squier, Jeff

doi:10.1016/j.optcom.2018.08.055

Cited by 46 publications

(11 citation statements)

References 17 publications

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“…The laser surface processing subsequently produced average roughness values between 1.39 μm and 2.73 μm. Worts et al [36] used a femtosecond laser (200 W, wavelength 1040 nm) for machining the Ti–6Al–4V alloy powder particles. Final surface roughness value Ra of 0.8 μm was achieved by processing the material in a single pass in a raster pattern.…”

Section: Introductionmentioning

confidence: 99%

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

et al. 2019

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The paper deals with the experimental study of laser beam micromachining of the powder metallurgy processed Ti compacts applying the industrial grade fibre nanosecond laser operating at the wavelength of 1064 nm. The influence of the laser energy density on the surface roughness, surface morphology and surface elements composition was investigated and evaluated by means of surface roughness measurement, scanning electron microscopy (SEM), energy dispersive X-Ray spectroscopy (EDS) and X-ray diffraction (XRD) analysis. The different laser treatment parameters resulted in the surfaces of very different characteristics of the newly developed biocompatible material prepared by advanced low temperature technology of hydride dehydride (HDH) titanium powder compactation. The results indicate that the laser pulse energy has remarkable effects on the machined surface characteristics which are discussed from the point of view of application in dental implantology.

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Section: Introductionmentioning

confidence: 99%

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

et al. 2019

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“…In most laser polishing work, a continuous wave laser or a pulsed laser with nanosecond or microsecond pulse width is used. Worts and co-workers (Ref 122 ) used a femtosecond laser (10 kHz repetition rate, 185 fs, 100 µJ pulse energy) to process AM metals. In contrast with traditional laser polishing, which uses surface re-melting without material removal, femtosecond laser polishing uses plasma-mediated ablation to remove material from the surface of the metal.…”

Section: Post-processing Methods For Am Metalsmentioning

confidence: 99%

Effects of Post-processing on the Surface Finish, Porosity, Residual Stresses, and Fatigue Performance of Additive Manufactured Metals: A Review

Zhang

Zhao

et al. 2021

J. of Materi Eng and Perform

110

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Additive manufacturing (AM) has attracted much attention due to its capability in building parts with complex geometries. Unfortunately, AM metals suffer from three major drawbacks, including high porosity, poor surface finish, and tensile residual stresses, all of which will significantly compromise the fatigue performance. These drawbacks present a major obstacle to the application of AM metals in industries that produce fatigue-sensitive components. Many post-processing methods, including heat treatment, hot isotropic pressing, laser shock peening, ultrasonic nanocrystal surface modification, advanced finishing and machining, and laser polishing, have been used to treat AM metals to decrease their porosity, improve the surface finish, and eliminate tensile residual stresses. As a result, significant improvement in fatigue performance has been observed. In this paper, the state of the art in utilizing post-processing techniques to treat AM metals and the effects of these treatments on the porosity, surface finish, and residual stresses of metal components and their resultant fatigue performance are reviewed.

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“…Worts et al (2019) investigated the surface modification of titanium AM parts by using femtosecond laser micromachining (FLM). Researchers developed a new capability of laser polishing these AM parts, which was achieved through FLM postprocessing.…”

Section: Techniques For Improving the Surface Quality Of Additively M...mentioning

confidence: 99%

A comprehensive review on surface quality improvement methods for additively manufactured parts

Hashmi

Mali

Meena

2022

RPJ

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Purpose The purpose of this paper is to study the functionality of additively manufactured (AM) parts, mainly depending on their dimensional accuracy and surface finish. However, the products manufactured using AM usually suffer from defects like roughness or uneven surfaces. This paper discusses the various surface quality improvement techniques, including how to reduce surface defects, surface roughness and dimensional accuracy of AM parts. Design/methodology/approach There are many different types of popular AM methods. Unfortunately, these AM methods are susceptible to different kinds of surface defects in the product. As a result, pre- and postprocessing efforts and control of various AM process parameters are needed to improve the surface quality and reduce surface roughness. Findings In this paper, the various surface quality improvement methods are categorized based on the type of materials, working principles of AM and types of finishing processes. They have been divided into chemical, thermal, mechanical and hybrid-based categories. Research limitations/implications The review has evaluated the possibility of various surface finishing methods for enhancing the surface quality of AM parts. It has also discussed the research perspective of these methods for surface finishing of AM parts at micro- to nanolevel surface roughness and better dimensional accuracy. Originality/value This paper represents a comprehensive review of surface quality improvement methods for both metals and polymer-based AM parts. Graphical abstract of surface quality improvement methods

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Surface structure modification of additively manufactured titanium components via femtosecond laser micromachining

Cited by 46 publications

References 17 publications

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

Effects of Post-processing on the Surface Finish, Porosity, Residual Stresses, and Fatigue Performance of Additive Manufactured Metals: A Review

A comprehensive review on surface quality improvement methods for additively manufactured parts

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