Implant design and production—a new approach by selective laser melting

Wehmöller, M.; Warnke, Patrick H.; Zilian, C.; Eufinger, H.

doi:10.1016/j.ics.2005.03.155

Cited by 51 publications

(27 citation statements)

References 4 publications

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“…In particular, AM has shown the possibility to fabricate patient specific medical devices (e.g. artificial joint replacements) [7][8][9] and parts with optimised topology and lattice structures that could replace heavier counterparts currently used in aircrafts [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V

Simonelli

Tse

Tuck

2014

Materials Science and Engineering: A

743

288

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originates from the AM process. To understand the effect of the microstructure on the tensile properties, selective laser melted (SLM) Ti-6Al-4V samples built in three different orientations were tensile tested. The investigated samples were near fully dense, in two distinct conditions, as-built and stress relieved respectively. It was found that the build orientation affects the tensile properties, and in particular the ductility of the samples. The mechanical anisotropy of the parts was discussed in relation to the crystallographic texture, phase composition and the predominant fracture mechanisms. Fractography and electron backscatter diffraction (EBSD) results indicate that the predominant fracture mechanism is 2 intergranular fracture along the grain boundaries present and thus provide and explanation for the typical fracture surface features observed in fracture AM Ti-6Al-4V.

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Section: Introductionmentioning

confidence: 99%

Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V

Simonelli

Tse

Tuck

2014

Materials Science and Engineering: A

743

288

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“…These layer-wise manufacturing methods support a market niche for components with shorter production times and intricate geometry details [1]. Although applications were historically confined to the production of prototypes, modern methods extend to the manufacturing of tooling inserts, biomedical implants, mass-customised consumer products, aerospace components, and artwork [1][2][3][4][5][6][7]. Among the AM methods, selective laser melting (SLM) dominates applications in the industrial and academic sectors [3].…”

Section: Introductionmentioning

confidence: 99%

Heat Treatment of Ti-6al-4v Produced by Lasercusing

Becker¹,

Rooyen²,

Dimitrov³

2015

sajie

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LaserCUSING® is a selective laser melting (SLM) process that is capable of manufacturing parts by melting powder with heat input from a laser beam. LaserCUSING demonstrates potential for producing the intricate geometries specifically required for biomedical implants and aerospace applications. One main limitation to this form of rapid prototyping is the lack of published studies on the material performance of the resulting material. Studies of the material's performance are often complicated by dependence on several factors, including starting powder properties, laser parameters, and post-processing heat treatments. This study aims to investigate the mechanical properties of LaserCUSINGproduced Ti-6Al-4V and its performance relative to the conventional wrought counterpart. A combination of conventional and LaserCUSING-tailored heat treatments is performed. The resulting microstructures are studied and linked to the properties obtained from hardness tests. The findings highlight that LaserCused Ti-6Al-4V is competitive with traditional materials, provided that optimal parameters are chosen and parts are subject to tailored post-processing. In the as-built condition, LaserCused Ti-6Al-4V displays superior strength and hardness as a result of a martensitic microstructure, and a poorer performance in ductility. However, the material performance can be improved using tailored heat treatments. Careful consideration must be given to suitable post-processing before application in critical components in the aerospace or biomedical industry can occur. OPSOMMINGLaserCUSING® is 'n selektiewe lasersmeltproses met die vermoë om onderdele te vervaardig deur die smelt van poeier met hitte inset van 'n laserstraal. LaserCUSING toon die potensiaal om ingewikkelde geometrieë benodig vir biomediese implantate en lugvaart toepassings, te produseer. Een van die hoof beperkings tot hierdie vorm van blits prototipering is die tekort aan gepubliseerde studies oor die materiaaleienskappe van die gevolglike materiaal. Studies van die materiaaleienskappe is dikwels verder gekompliseer as gevolg van die invloed van verskeie faktore, soos die aanvanklike poeier eienskappe, die laser parameters en hittebehandelings na die lasersmeltproses. Hierdie studie beoog om die meganiese eienskappe van Ti-6Al-4V wat met LaserCUSING geproduseer is, en die vertoning daarvan relatief tot 'n konvensionele bewerkte eweknie, te ondersoek. 'n Kombinasie van konvensionele en aangepaste hittebehandelings is toegepas. Die resulterende mikrostrukture is ondersoek en verwantskappe tot die resultate van hardheidstoetse is gevind. Die resultate toon dat die Ti-6Al-4V met tradisionele materiale kan kompeteer mits optimale parameters vooraf gekies word en dat onderdele aangepaste hittebehandelings ondergaan. Die Ti-6Al-4V toon beter sterkte en hardheid, maar het swakker smeebaarheid. Noukeurige oorweging vir verwerking na die lasersmelt is nodig voor die toepassing daarvan op kritiese komponente. #This article is an extension of a paper presented at

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“…It was, however, clear from this study that the proposed method warranted further exploration and a large amount of further work has been undertaken since this paper. This work included a feasibility study where Wehmöller et al [33] used SLM for direct implant production using 100% stainless steel and titanium, and although the structures were not implanted, the authors concluded that the method was technically feasible. In a similar paper by Das et al [34], the authors produced scaffolds using Nylon 6 via SLS, which is a biocompatible material, but noted problems with biocompatibility from unsintered powders.…”

Section: History 1995-2005mentioning

confidence: 99%

X-ray computed tomography and additive manufacturing in medicine: a review

Thompson

McNally

Maskery

et al. 2017

Int. J. Metrol. Qual. Eng.

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Abstract. The use of X-ray computed tomography (XCT) with additive manufacture (AM) within a medical context is examined in this review. The seven AM process families and various XCT scanning techniques are explained in brief, and the use of these technologies together is detailed over time. The transition of these technologies from a simple method of medical modelling to a robust method of customised implant manufacture is described, and the state-of-the-art for XCT and AM is examined in detail. XCT and AM are identified as having the potential to improve gold standards in both modelling and implant production, and in the conclusions of this review, primary barriers to the increased adoption of AM and XCT technologies are identified in reference to the main applications of XCT and AM technologies. The primary prohibitive factors generally relate to the cost of production across all of the examined applications, as well as the need for further clinical trials in surgical guidance and applications involving implantation.

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Implant design and production—a new approach by selective laser melting

Cited by 51 publications

References 4 publications

Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V

Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V

Heat Treatment of Ti-6al-4v Produced by Lasercusing

X-ray computed tomography and additive manufacturing in medicine: a review

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