Metal Additive Manufacturing: A Review
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TLDR
The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.Abstract:
This paper reviews the state-of-the-art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape. It enables distributed manufacturing and the productions of parts-on-demand while offering the potential to reduce cost, energy consumption, and carbon footprint. This paper explores the material science, processes, and business consideration associated with achieving these performance gains. It is concluded that a paradigm shift is required in order to fully exploit AM potential.read more
Citations
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Journal ArticleDOI
On the ballistic perforation resistance of additive manufactured AlSi10Mg aluminium plates
Martin Kristoffersen,Miguel Costas,Tim Koenis,Vegard Brøtan,Christian Oen Paulsen,Tore Børvik +5 more
TL;DR: In this article, a powder-bed fusion machine was used for additive manufacturing of AlSi10Mg with dimensions of 100mm, 80mm, and 5mm, respectively.
Journal ArticleDOI
Modeling of the laser powder–based directed energy deposition process for additive manufacturing: a review
Xiaoyi Guan,Yaoyao Fiona Zhao +1 more
TL;DR: A review of the modeling work for the laser powder-based DED process is given in this article, in which the models developed for powder stream and its interaction with laser beam, melt-pool, and bulk heating are discussed in detail.
Journal ArticleDOI
Study on variations of microstructure and metallurgical properties in various heat-affected zones of SLM fabricated Nickel–Titanium alloy
Behzad Farhang,Bharath Bhushan Ravichander,Federico Venturi,Amirhesam Amerinatanzi,Narges Shayesteh Moghaddam +4 more
TL;DR: In this paper, samples are printed using a single set of process parameters and analyzed for grain structure, chemical composition, microstructure, and hardness, and results are reported and variations in these material properties are summarized.
Journal ArticleDOI
In situ radiographic and ex situ tomographic analysis of pore interactions during multilayer builds in laser powder bed fusion
Lorna Sinclair,Lorna Sinclair,Chu Lun Alex Leung,Chu Lun Alex Leung,Sebastian Marussi,Sebastian Marussi,Samuel J. Clark,Samuel J. Clark,Yunhui Chen,Yunhui Chen,Margie P. Olbinado,Alexander Rack,Jabbar Gardy,Gavin J. Baxter,Peter D. Lee,Peter D. Lee +15 more
TL;DR: In this article, the influence of processing parameters on Ti-6Al-4V additive manufactured thin-wall components are investigated for multilayer builds, using a custom-built process replicator and in situ high-speed synchrotron X-ray imaging.
Journal ArticleDOI
Additive manufacturing of precision optics at micro and nanoscale
TL;DR: This review is mainly focused on discussions about optical fabrication at micro and nanoscale since the additive manufacturing processes available today are not easily scalable to large size optics.
References
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As-Fabricated and Heat-Treated Microstructures of the Ti-6Al-4V Alloy Processed by Selective Laser Melting
TL;DR: In this paper, the authors presented the various types of microstructure of the Ti-6Al-4V alloy after post-fabrication heat treatments below or above the β transus.
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Microstructure and Mechanical Properties of Wire and Arc Additive Manufactured Ti-6Al-4V
TL;DR: In this paper, the macrostructure, microstructure and mechanical properties of a Ti-6Al-4V alloy after WAAM deposition have been investigated, and the average yield and ultimate tensile strengths of the as-deposited material were found to be slightly lower than those for a forged Ti- 6Al 4V bar (MIL-T 9047), however, the ductility was similar and the mean fatigue life was significantly higher.
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Cost estimation for rapid manufacturing - laser sintering production for low to medium volumes:
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Environmental aspects of laser-based and conventional tool and die manufacturing
TL;DR: In this paper, the authors investigated three case studies to reveal the extent to which DMD-based manufacturing of molds and dies can currently achieve reduced environmental emissions and energy consumption relative to conventional manufacturing pathways.
Journal ArticleDOI
The laser additive manufacture of Ti-6Al-4V
P. A. Kobryn,S. L. Semiatin +1 more
TL;DR: In this paper, the relationship between LAM processing parameters and microstructure in as-deposited Ti-6Al-4V was investigated, and the results presented in this paper provide a first look at the relationships between the two parameters.