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
Numerical analysis of heat transfer and fluid flow in multilayer deposition of PAW-based wire and arc additive manufacturing
Xingwang Bai,Paul A. Colegrove,Jialuo Ding,Xiangman Zhou,Chenglei Diao,Philippe Bridgeman,Jan Hönnige,Haiou Zhang,Stewart W. Williams +8 more
TL;DR: In this paper, a three-dimensional numerical model was developed to investigate the fluid flow and heat transfer behaviors in multilayer deposition of plasma arc welding (PAW) based wire and arc additive manufacture (WAAM).
Journal ArticleDOI
Structure/property (constitutive and spallation response) of additively manufactured 316L stainless steel
George T. Gray,Veronica Livescu,Paulo Rigg,Carl P. Trujillo,Carl M. Cady,S.R. Chen,John S. Carpenter,Thomas J. Lienert,Saryu Fensin +8 more
TL;DR: In this paper, cylindrical samples of 316L SS were produced using a LENS MR-7 laser additive manufacturing system from Optomec (Albuquerque, NM) equipped with a 1.kW Yb-fiber laser.
Journal ArticleDOI
Additive manufacturing : unlocking the evolution of energy materials
TL;DR: This comprehensive review will fill the gap in communicating on recent breakthroughs in additive manufacturing for energy material and device applications, and underpin the discoveries on what 3D functional energy structures can be created without design constraints.
BookDOI
Additive Manufacturing of Metals
TL;DR: In this article, Milewski discusses additive manufacturing of metallurgical textiles, including 3D printing, additive layering, and additive additive additive fabrication of METALS from fundamentals.
Journal ArticleDOI
The barriers to the progression of additive manufacture: perspectives from UK industry
Lauren Thomas-Seale,Jackson Kirkman-Brown,Moataz M. Attallah,Daniel M. Espino,Duncan E.T. Shepherd +4 more
TL;DR: In this article, the authors identify the current barriers to the progression of additive manufacturing for end-use products from an industrial perspective and understand the nature of those barriers, including education, cost, design, software, materials, traceability, machine constraints, in-process monitoring, mechanical properties, repeatability, scalability, validation, standards, quality, inspection, tolerances, finishing and sterilisation.
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.
Journal ArticleDOI
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.