Corrosion resistance characteristics of a Ti-6Al-4V alloy scaffold that is fabricated by electron beam melting and selective laser melting for implantation in vivo

2017 ◽  
Vol 70 ◽  
pp. 832-841 ◽  
Author(s):  
Bingjing Zhao ◽  
Hong Wang ◽  
Ning Qiao ◽  
Chao Wang ◽  
Min Hu
Keyword(s):  
Corrosion Resistance ◽  
Electron Beam ◽  
Selective Laser Melting ◽  
Electron Beam Melting ◽  
Laser Melting

scholarly journals Selective Laser Melting and Electron Beam Melting of Ti6Al4V for Orthopedic Applications: A Comparative Study on the Applied Building Direction

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5584
Author(s):  
Paola Ginestra ◽  
Rosalba Monica Ferraro ◽  
Keren Zohar-Hauber ◽  
Andrea Abeni ◽  
Silvia Giliani ◽  
...  
Keyword(s):  
Electron Beam ◽  
Selective Laser Melting ◽  
Electron Beam Melting ◽  
Cell Attachment ◽  
Dimensional Accuracy ◽  
Surrounding Tissue ◽  
Laser Melting ◽  
Implant Surface ◽  
Whole Process

The 3D printing process offers several advantages to the medical industry by producing complex and bespoke devices that accurately reproduce customized patient geometries. Despite the recent developments that strongly enhanced the dominance of additive manufacturing (AM) techniques over conventional methods, processes need to be continually optimized and controlled to obtain implants that can fulfill all the requirements of the surgical procedure and the anatomical district of interest. The best outcomes of an implant derive from optimal compromise and balance between a good interaction with the surrounding tissue through cell attachment and reduced inflammatory response mainly caused by a weak interface with the native tissue or bacteria colonization of the implant surface. For these reasons, the chemical, morphological, and mechanical properties of a device need to be designed in order to assure the best performances considering the in vivo environment components. In particular, complex 3D geometries can be produced with high dimensional accuracy but inadequate surface properties due to the layer manufacturing process that always entails the use of post-processing techniques to improve the surface quality, increasing the lead times of the whole process despite the reduction of the supply chain. The goal of this work was to provide a comparison between Ti6Al4V samples fabricated by selective laser melting (SLM) and electron beam melting (EBM) with different building directions in relation to the building plate. The results highlighted the influence of the process technique on osteoblast attachment and mineralization compared with the building orientation that showed a limited effect in promoting a proper osseointegration over a long-term period.

scholarly journals Directionally-Dependent Mechanical Properties of Ti6Al4V Manufactured by Electron Beam Melting (EBM) and Selective Laser Melting (SLM)

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3603
Author(s):  
Tim Pasang ◽  
Benny Tavlovich ◽  
Omry Yannay ◽  
Ben Jakson ◽  
Mike Fry ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Tensile Strength ◽  
Electron Beam ◽  
Additive Manufacturing ◽  
Selective Laser Melting ◽  
Electron Beam Melting ◽  
Rolling Direction ◽  
Laser Melting ◽  
Plate Rolling

An investigation of mechanical properties of Ti6Al4V produced by additive manufacturing (AM) in the as-printed condition have been conducted and compared with wrought alloys. The AM samples were built by Selective Laser Melting (SLM) and Electron Beam Melting (EBM) in 0°, 45° and 90°—relative to horizontal direction. Similarly, the wrought samples were also cut and tested in the same directions relative to the plate rolling direction. The microstructures of the samples were significantly different on all samples. α′ martensite was observed on the SLM, acicular α on EBM and combination of both on the wrought alloy. EBM samples had higher surface roughness (Ra) compared with both SLM and wrought alloy. SLM samples were comparatively harder than wrought alloy and EBM. Tensile strength of the wrought alloy was higher in all directions except for 45°, where SLM samples showed higher strength than both EBM and wrought alloy on that direction. The ductility of the wrought alloy was consistently higher than both SLM and EBM indicated by clear necking feature on the wrought alloy samples. Dimples were observed on all fracture surfaces.

scholarly journals Comparison of Single Ti6Al4V Struts Made Using Selective Laser Melting and Electron Beam Melting Subject to Part Orientation

Metals ◽  
2017 ◽  
Vol 7 (3) ◽  
pp. 91 ◽  
Author(s):  
Volker Weißmann ◽  
Philipp Drescher ◽  
Rainer Bader ◽  
Hermann Seitz ◽  
Harald Hansmann ◽  
...  
Keyword(s):  
Electron Beam ◽  
Selective Laser Melting ◽  
Electron Beam Melting ◽  
Laser Melting ◽  
Part Orientation

Influence of defects on mechanical properties of Ti–6Al–4V components produced by selective laser melting and electron beam melting

2015 ◽  
Vol 86 ◽  
pp. 545-554 ◽  
Author(s):  
Haijun Gong ◽  
Khalid Rafi ◽  
Hengfeng Gu ◽  
G.D. Janaki Ram ◽  
Thomas Starr ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Selective Laser Melting ◽  
Electron Beam Melting ◽  
Laser Melting
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