Selective laser melting of a Ti-based bulk metallic glass

Deng, Liang; Wang, Shenghai; Wang, Pei; Kühn, U.; Pauly, S.

doi:10.1016/j.matlet.2017.10.130

Cited by 116 publications

(37 citation statements)

References 22 publications

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“…Given the reduced yield strength seen in beta phase Ti alloys, the enhanced strength of BMGs is appealing. A range of different BMG compositions have been demonstrated in L-PBF, including Ti-based [151], Fe based [157], and multiple Zr based alloys [148,149]. Further to this, the addition of an amorphous glass fraction to a conventional alloy has been shown using 316 L stainless steel and a Fe based BMG [158].…”

Section: Low Modulus Alloysmentioning

confidence: 95%

“…The effect of porosity on the degradation rate of the Mg alloy WE43 has been demonstrated in depth, with resorption occurring across the entire scaffold and retention of adequate strength and stiffness for 4-weeks in vitro 190]. In an effort to further optimise degradation kinetics, the use of a polycaprolactone (PCL) coating has been investigated in a mouse [149,151]. calvarial defect model, however the rate of resorption remained sufficiently high that voids were observed between the implant surface and mineralised bone after 84 days [191].…”

Section: Bioactive Alloysmentioning

confidence: 99%

“…Graph showing the tensile properties of additively manufactured lowmodulus alloys in comparison to conventionally and additively manufactured Ti-6Al-4 V and cp-Ti, and the elastic moduli of cortical bone. Reduction in stiffness correlates with a reduced yield strength for beta phase titanium alloys compared to Ti-6Al-4 V, whilst metallic glasses show enhanced strength[141][142][143][144][145][146][147][148][149][150][151][152].…”

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confidence: 99%

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Clinical, industrial, and research perspectives on powder bed fusion additively manufactured metal implants

Lowther

Louth

Davey

et al. 2019

Additive Manufacturing

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A B S T R A C TFor over ten years, metallic skeletal endoprostheses have been produced in select cases by additive manufacturing (AM) and increasing awareness is driving demand for wider access to the technology. This review brings together key stakeholder perspectives on the translation of AM research; clinical application, ongoing research in the field of powder bed fusion, and the current regulatory framework. The current clinical use of AM is assessed, both on a mass-manufactured scale and bespoke application for patient specific implants. To illuminate the benefits to clinicians, a case study on the provision of custom cranioplasty is provided based on prosthetist testimony. Current progress in research is discussed, with immediate gains to be made through increased design freedom described at both meso-and macro-scale, as well as long-term goals in alloy development including bioactive materials. In all cases, focus is given to specific clinical challenges such as stress shielding and osseointegration. Outstanding challenges in industrialisation of AM are openly raised, with possible solutions assessed. Finally, overarching context is given with a review of the regulatory framework involved in translating AM implants, with particular emphasis placed on customisation within an orthopaedic remit. A viable future for AM of metal implants is presented, and it is suggested that continuing collaboration between all stakeholders will enable acceleration of the translation process. fection or surgical complications [11][12][13].Currently, the majority of skeletal endoprostheses are produced from titanium (Ti) or cobalt chromium (CoCr) based alloys, which meet the criteria of durability, strength, corrosion resistance and a low immune response [14,15]. These characteristics however come at the cost of the high stiffness of these alloys in comparison to bone. Mismatch between the mechanical properties of bone and orthopaedic materials

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Section: Low Modulus Alloysmentioning

confidence: 95%

Section: Bioactive Alloysmentioning

confidence: 99%

mentioning

confidence: 99%

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Clinical, industrial, and research perspectives on powder bed fusion additively manufactured metal implants

Lowther

Louth

Davey

et al. 2019

Additive Manufacturing

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show abstract

“…The most important parameters affecting the density of energy supplied to a powder layer and enabling the entire melting of the charge material include laser power, scanning rate and the laser beam diameter. Depending on the type of material used in 3D printing as well as the size of powder particles and the height of powder layer, the power used in the process is restricted within the range of 60 W to 370 W, the scanning rate is restricted within the range of 200 mm/s to 1250 mm/s, whereas the laser beam diameter is restricted within the range of 50 µm to 140 µm [6][7][8][9][10].…”

Section: Selective Laser Melting Technologymentioning

confidence: 99%

“…Elements made of alloy Ti47Cu38Zr7.5Fe2.5Sn-2Si1Ag2 subjected to the SLM process are characterised by relatively high density restricted within the range of 99.5% to 99.7 %), a tensile strength of 1690 MPa and the module of elasticity amounting to 100 GPa. Taking into consideration obtained mechanical properties, the alloy can be successfully used in the aviation industry, whereas because of the favourable composition of alloying elements combined with appropriately adjusted parameters of the SLM process, it can also find applications in biomedical engineering [7].…”

Section: Alloy Ti37nb6snmentioning

confidence: 99%