Microstructure of near-infrared pulsed laser sintered titanium samples

Fischer, Pascal; Leber, Hans J.; Romano, Valerio; Weber, H. P.; Karapatis, N. P.; André, Cédric; Glardon, Rémy

doi:10.1007/s00339-003-2205-6

Cited by 37 publications

(26 citation statements)

References 4 publications

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“…The Ti-6Al-4V microstructure after EBM is fine when compared to the conventional wrought Ti-6Al-4V [65]. Although the microstructure produced by laser RP methods is the result of the cooling rate [66], there is the possibility of a martensite-type transformation in Ti-6Al-4V alloy during rapid heating [67]. The main factors affecting the cooling rate are the electron and laser scan speed [57] and the geometry and the size of fabricated elements [68].…”

Section: Microstructures Of the Ti-6al-4v Alloysmentioning

confidence: 99%

Laser and Electron Beam Additive Manufacturing Methods of Fabricating Titanium Bone Implants

et al. 2017

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Featured Application: This work is a detailed comparison of the direct laser and electron additive manufacturing methods, which could help scientific research institutes and companies choose the best 3D printer system for the fabrication of titanium implants.Abstract: Additive Manufacturing (AM) methods are generally used to produce an early sample or near net-shape elements based on three-dimensional geometrical modules. To date, publications on AM of metal implants have mainly focused on knee and hip replacements or bone scaffolds for tissue engineering. The direct fabrication of metallic implants can be achieved by methods, such as Selective Laser Melting (SLM) or Electron Beam Melting (EBM). This work compares the SLM and EBM methods used in the fabrication of titanium bone implants by analyzing the microstructure, mechanical properties and cytotoxicity. The SLM process was conducted in an environmental chamber using 0.4-0.6 vol % of oxygen to enhance the mechanical properties of a Ti-6Al-4V alloy. SLM processed material had high anisotropy of mechanical properties and superior UTS (1246-1421 MPa) when compared to the EBM (972-976 MPa) and the wrought material (933-942 MPa). The microstructure and phase composition depended on the used fabrication method. The AM methods caused the formation of long epitaxial grains of the prior β phase. The equilibrium phases (α + β) and non-equilibrium α' martensite was obtained after EBM and SLM, respectively. Although it was found that the heat transfer that occurs during the layer by layer generation of the component caused aluminum content deviations, neither methods generated any cytotoxic effects. Furthermore, in contrast to SLM, the EBM fabricated material met the ASTMF136 standard for surgical implant applications.

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Section: Microstructures Of the Ti-6al-4v Alloysmentioning

confidence: 99%

Laser and Electron Beam Additive Manufacturing Methods of Fabricating Titanium Bone Implants

et al. 2017

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“…The cellular reaction is influenced by the properties of the bulk materials as well as the specifications of the surface, that is, the chemical composition and the topography [Birte et al, 2003;Sikavitsas et al, 2003;Fischer et al, 2004;Peto et al, 2002;Gyorgy et al, 2002]. When one is considering materials for application of orthopaedic implants, it is important to consider a number of factors, such as biocompatibility and surface wettability.…”

Section: Discussionmentioning

confidence: 99%

Characterization and Evaluation of Surface Modified Titanium Alloy by Pulse Nd:YAG Laser for Orthopaedic Applications: an Invivo Study

Khosroshahi¹

2011

Biomedical Engineering, Trends in Materials Science

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“…Pure metals processed through metal 3D printing include titanium processed through LS, 26 LM, 27 and LMD, 27 , 28 tantalum through LMD, 29 gold through SLM, 30 copper through LM and EBM, 31 , 32 and iron and niobium through EBM.…”

Section: Materials Systemsmentioning

confidence: 99%