Journal ArticleDOI
Electron Beam Additive Manufacturing of Titanium Components: Properties and Performance
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
Citations
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Journal ArticleDOI
Position-dependent mechanical characterization of the PBF-EB-manufactured Ti6Al4V alloy
Daniel Kotzem,Alexandra Höffgen,Rajevan Raveendran,Felix Stern,Kerstin Möhring,Frank Walther +5 more
TL;DR: In this article, the structural properties of the PBF-EB-manufactured Ti6Al4V alloy were investigated as a function of the position on the building platform, where the highest surface roughness detected by computed tomography (Ra'='46.0'±'5.3' was found for specimens located in the front of the building.
Dissertation
Improvement of dimensional accuracy using bending compensation framework in a selective laser sintering
TL;DR: In this paper, the authors propose a solution to solve the problem of the problem: this paper ] of unstructured data, which is also referred to as data augmentation.
Journal ArticleDOI
Modeling of Deposition Height in Localized Electrochemical Deposition Using Liquid Marbles
TL;DR: In this article, a theoretical model to predict the deposition height using a liquid marble is developed, which is a droplet of liquid coated with hydrophobic micro or nano powders.
Journal ArticleDOI
Improvement of Fatigue Strength of Additive Manufactured Metals by Solid-Liquid-Gas Interfacial Phenomena Induced by Pulse Laser
TL;DR: In this article, a novel mechanical surface treatment using solid-liquid-gas interfacial phenomena induced by pulse laser has been developed to improve the fatigue strength of additive manufactured (AM) materials.
Journal ArticleDOI
Effect of Porosity Parameters on the Strength of Gas Turbine Compressor Blades Made of Titanium Alloys
TL;DR: In this article, the effect of pore space parameters of sintered titanium alloys on the strength margin of gas turbine compressor blades has been carried out and the results of experimental studies of the endurance limit of specimens of VT1-0, VT6, and VT8 alloys, which have a different porosity, mean pore size and fractal dimension, are presented.
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.