Journal ArticleDOI
Electron Beam Additive Manufacturing of Titanium Components: Properties and Performance
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TLDR
In this paper, the fatigue properties of Ti-6Al-4V specimens and components produced by Electron Beam additive manufacturing were evaluated and it was found that the fatigue performance of specimens produced by additive manufacturing is significantly lower than that of wrought material due to defects such as porosity and surface roughness.Abstract:
This research evaluates the fatigue properties of Ti-6Al-4V specimens and componentsproduced by Electron Beam additive manufacturing. It was found that the fatigue per-formance of specimens produced by additive manufacturing is significantly lower thanthat of wrought material due to defects such as porosity and surface roughness. However,evaluation of an actual component subjected to design fatigue loads did not result in pre-mature failure as anticipated by specimen testing. Metallography, residual stress, staticstrength and elongation, fracture toughness, crack growth, and the effect of post process-ing operations such as machining and peening on fatigue performance were alsoevaluated. [DOI: 10.1115/1.4025773]Keywords: additive manufacturing, electron beam, titanium, fatigue, fractureread more
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Investigations on Additive Manufacturing of Ti-6Al-4V by ?-Plasma Transferred Arc Powder Deposition Process
TL;DR: In this paper, the authors investigated the additive manufacturing aspects of Ti6Al4V by microplasma transferred arc powder deposition (μ-PTAPD) process in continuous and dwell-time mode.
Journal ArticleDOI
The effect of different build orientations on the consolidation, tensile and fracture toughness properties of direct metal laser sintering Ti-6Al-4V
TL;DR: In this paper, optical and electron microscopy were used to characterise the microstructure of the DMLS specimens and their effects on the fractures and mechanical properties, and it was found that the built samples have an excellent density at 4.5 g/cm, and the sample surfaces parallel to the building direction are rougher than the perpendicular surfaces.
Journal ArticleDOI
Microstructure and cyclic deformation behavior of a 3D-printed Ti–6Al–4V alloy
Yinling Zhang,Yinling Zhang,Zuojia Chen,S.J. Qu,A.H. Feng,Guangbao Mi,Jun Shen,Jun Shen,X. Huang,Daolun Chen +9 more
TL;DR: In this paper, the microstructure and cyclic deformation behavior of a 3D-printed Ti-6Al-4V alloy via selective electron beam melting (SEBM) was investigated.
Journal ArticleDOI
A numerical framework to predict the fatigue life of lattice structures built by additive manufacturing
Alexis Burr,Théo Persenot,Pierre-Thomas Doutre,Jean-Yves Buffiere,Pierre Lhuissier,Guilhem Martin,Rémy Dendievel +6 more
TL;DR: In this article, the authors investigated the fatigue properties of lattice structures produced by S-EBM and proposed a numerical framework based on the cascading failure of struts, relying on a damage accumulation law.
Journal ArticleDOI
Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by Electron Beam Melting
TL;DR: In this paper, the effect of process parameters on the microstructure and the resulting mechanical properties of Ti-6Al-4V alloy was investigated, and the results showed that the yield strength of Ti 6Al 4V alloy with a bimodal microstructures was higher than those with a basketweave microststructures.
References
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Journal ArticleDOI
A study of the microstructural evolution during selective laser melting of Ti–6Al–4V
TL;DR: In this article, the development of the microstructure of the Ti-6Al-4V alloy processed by selective laser melting (SLM) was studied by light optical microscopy.
Journal ArticleDOI
Residual stresses in selective laser sintering and selective laser melting
Peter Mercelis,Jean-Pierre Kruth +1 more
TL;DR: In this paper, a simple theoretical model is developed to predict residual stress distributions in selective laser sintering (SLS) and selective laser melting (SLM), aiming at a better understanding of this phenomenon.
Journal ArticleDOI
Progress in Additive Manufacturing and Rapid Prototyping
TL;DR: Rapid prototyping generally refers to techniques that produce shaped parts by gradual creation or addition of solid material, therein differing fundamentally from forming and material removal manufacturing techniques as mentioned in this paper. But it is not suitable for all applications.
Journal ArticleDOI
Rapid manufacturing and rapid tooling with layer manufacturing (lm) technologies, state of the art and future perspectives
TL;DR: In this article, a systematic material dependent classification of layer manufacturing and process oriented metal part manufacturing techniques are proposed, mainly for metallic parts, polymer parts and tooling, and the generic and the major specific process characteristics and materials are described.
Journal ArticleDOI
On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: Fatigue resistance and crack growth performance
Stefan Leuders,M. Thöne,Andre Riemer,Thomas Niendorf,Thomas Tröster,Hans Albert Richard,Hans Jürgen Maier +6 more
TL;DR: In this article, the microstructure-defect-property relationship under cyclic loading for a TiAl6V4 alloy processed by selective laser melting is investigated. And the results show that the micron sized pores mainly affect fatigue strength, while residual stresses have a strong impact on fatigue crack growth.