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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Development of Wire + Arc additive manufacture for the production of large-scale unalloyed tungsten components
TL;DR: In this paper, a wire-and-arc additive manufacturing (WADM) was used to produce large-scale parts in unalloyed tungsten by complete fusion.
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Selective laser melting of tungsten carbide reinforced maraging steel composite
Abstract: In this work, tungsten carbide (WC) reinforced maraging steel matrix composites were in-situ manufactured by selective laser melting (SLM) from powder mixture. The SLM processed samples presented high relative density (over 99%) with a homogenous distribution of WC. The as-fabricated surface quality of SLM processed samples was improved significantly by the addition of WC. Focused ion beam and transmission electron microscopy were employed to characterize the interfacial properties between tungsten carbide and steel matrix. The elemental analysis indicates that metallurgical bonding appears at interfacial region due to the diffusion. Tensile behavior of SLM processed maraging steel was different from their composite with several WC contents.
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Microstructure and mechanical properties of TOP-TIG-wire and arc additive manufactured super duplex stainless steel (ER2594)
Xiaoyong Zhang,Xiaoyong Zhang,Kehong Wang,Qi Zhou,Jialuo Ding,Supriyo Ganguly,Grasso Marzio,Yang Dongqing,Xiangfang Xu,Philip Dirisu,Stewart W. Williams +10 more
TL;DR: In this article, the microstructure of the as-deposited wall was carefully analyzed along with the variation of mechanical properties, and the results revealed that, in the wall-body, the austenite/ferrite phase balance was broken by the overgrowing the Austenite phase.
Journal ArticleDOI
Additive Manufacturing Based on Welding Arc: A low-Cost Method
TL;DR: In this paper, the authors present a review of a new developing manufacturing technology based on welding of metallic materials, which has the potential to revolutionize the global parts manufacturing and industrial tendencies with the rapid development of increasing material manufacturing technology.
Journal ArticleDOI
Wire-arc additive manufacturing of nickel aluminum bronze/stainless steel hybrid parts - Interfacial characterization, prospects, and problems
TL;DR: In this article, the authors used focused ion beam (FIB) based Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Electron Backscatter Diffraction (EBSD), and Transmission Electron Magnetic Resonance Imaging (TEM) to characterize the built (NAB)-substrate (SS) interfacial characteristics.
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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Environmental aspects of laser-based and conventional tool and die manufacturing
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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.