The mechanical strength of Ti-6Al-4V columns with regular octet microstructure manufactured by electron beam melting

Materialia ◽  
2019 ◽  
Vol 5 ◽  
pp. 100232 ◽  
Author(s):  
Angela Ferrigno ◽  
Francesco Di Caprio ◽  
Rosario Borrelli ◽  
Ferdinando Auricchio ◽  
Andrea Vigliotti
Keyword(s):  
Electron Beam ◽  
Mechanical Strength ◽  
Electron Beam Melting

scholarly journals Custom-Made Titanium Mesh Tray for Mandibular Reconstruction Using an Electron Beam Melting System

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6556
Author(s):  
Isao Hoshi ◽  
Tadashi Kawai ◽  
Shingo Kurosu ◽  
Tadaharu Minamino ◽  
Kei Onodera ◽  
...  
Keyword(s):  
Electron Beam ◽  
Mechanical Strength ◽  
Electron Beam Melting ◽  
Maxillofacial Surgery ◽  
Honeycomb Structure ◽  
Mandibular Reconstruction ◽  
Titanium Mesh ◽  
Custom Made ◽  
Computer Aided ◽  
Sufficient Strength

Mandibular reconstruction using a titanium mesh tray and autologous bone is a common procedure in oral and maxillofacial surgery. However, there can be material problems—such as broken titanium mesh trays—which may undermine long-term functionality. This study was designed to investigate the optimal conditions for a titanium mesh tray with an ideal mandibular shape and sufficient strength, using computer-aided design, computer-aided manufacturing technology, and electron beam additive manufacturing. Specimens were prepared using Ti-6Al-4V extra low interstitial titanium alloy powder and an electron beam melting (EBM) system. The mechanical strength of the plate-shaped specimens was examined for differences in the stretch direction with respect to the stacking direction and the presence or absence of surface treatment. While evaluating the mechanical strength of the tray-shaped specimens, the topology was optimized and specimens with a honeycomb structure were also verified. Excellent mechanical strength was observed under the condition that the specimen was stretched vertically in the stacking direction and the surface was treated. The results of the tray-shaped specimens indicated that the thickness was 1.2 mm, the weight reduction rate was 20%, and the addition of a honeycomb structure could withstand an assumed bite force of 2000 N. This study suggests that the EBM system could be a useful technique for preparing custom-made titanium mesh trays of sufficient strength for mandibular reconstruction by arranging various manufacturing conditions.

Assessing Porosity in Selective Electron Beam Melting Manufactured Ti–6Al–4V by Nonlinear Impact Modulation Spectroscopy

2020 ◽  
Vol 39 (4) ◽  
Author(s):  
Jan Kober ◽  
Alexander Kirchner ◽  
Alena Kruisova ◽  
Milan Chlada ◽  
Sigrun Hirsekorn ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Modulation Spectroscopy ◽  
Selective Electron Beam Melting

Processing of Tungsten Through Electron Beam Melting

2021 ◽  
pp. 153041
Author(s):  
Elizabeth A.I. Ellis ◽  
Michael A. Sprayberry ◽  
Christopher Ledford ◽  
Jameson P. Hankwitz ◽  
Michael M. Kirka ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting

Developments on Electron Beam Melting (EBM) of Ti–6Al–4V: A Review

2021 ◽  
Author(s):  
Mohammad Karimzadeh Kolamroudi ◽  
Mohammed Asmael ◽  
Mustafa Ilkan ◽  
Naser Kordani
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting

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 Feasibility Study of the Cranial Implant Fabricated without Supports in Electron Beam Melting

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 496
Author(s):  
Khaja Moiduddin ◽  
Syed Hammad Mian ◽  
Wadea Ameen ◽  
Hisham Alkhalefah ◽  
Abdul Sayeed
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Structural Characteristics ◽  
Cost Effective ◽  
Medical Industry ◽  
Detailed Review ◽  
Build Time ◽  
Cranial Implant ◽  
Cranial Implants ◽  
Fabrication Time

Additive manufacturing (AM), particularly electron beam melting (EBM), is becoming increasingly common in the medical industry because of its remarkable benefits. The application of personalized titanium alloy implants produced using EBM has received considerable attention in recent times due to their simplicity and efficacy. However, these tailored implants are not cost-effective, placing a tremendous strain on the patient. The use of additional materials as support during the manufacturing process is one of the key causes of its high cost. A lot of research has been done to lessen the use of supports through various types of support designs. There is indeed a noticeable paucity of studies in the literature that have examined customized implants produced without or minimal supports. This research, therefore, reports on the investigation of cranial implants fabricated with and without supports. The two personalized implants are evaluated in terms of their cost, fabrication time, and accuracy. The study showed impressive results for cranial implants manufactured without supports that cost 39% less than the implants with supports. Similarly, the implant’s (without supports) build time was 18% less than its equivalent with supports. The two implants also demonstrated similar fitting accuracy with 0.2613 mm error in the instance of implant built without supports and 0.2544 mm for the implant with supports. The results indicate that cranial implants can be produced without EBM supports, which can minimize both production time and cost substantially. However, the manufacture of other complex implants without supports needs further study. The future study also requires a detailed review of the mechanical and structural characteristics of cranial implants built without supports.

scholarly journals Residual stress investigation on Ti-48Al-2Cr-2Nb samples produced by Electron Beam Melting process

Procedia CIRP ◽  
2021 ◽  
Vol 99 ◽  
pp. 336-341
Author(s):  
Manuela Galati ◽  
Giovanni Rizza ◽  
Alessandro Salmi ◽  
Sara Biamino ◽  
Cristian Ghibaudo ◽  
...  
Keyword(s):  
Residual Stress ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Melting Process ◽  
Electron Beam Melting Process
Sign in / Sign up

Export Citation Format

Share Document