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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A review on the fatigue behavior of Ti-6Al-4V fabricated by electron beam melting additive manufacturing
Andrew H. Chern,Peeyush Nandwana,Tao Yuan,Michael M. Kirka,Ryan R. Dehoff,Peter K. Liaw,Chad E. Duty +6 more
TL;DR: In this article, the effects of build orientation, surface roughness, and hot-isostatic pressing are linked to the fatigue properties highlighting microstructure, defects, and failure mechanisms.
Journal ArticleDOI
Influence of energy density on metallurgy and properties in metal additive manufacturing
Shahir Mohd Yusuf,Nong Gao +1 more
TL;DR: A review of additive manufacturing of metal components can be found in this article, where the influence of energy density on metallurgy, microstructure and mechanical properties of fabricated parts is addressed.
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Recent advances on 3D printing graphene-based composites
TL;DR: In this paper, the authors provide an outline of 3D printing graphene-based composites according to various additive manufacturing techniques including fused deposition modeling (FDM), direct ink writing (DIW), stereolithography (SLA), and selective laser sintering (SLS).
Journal ArticleDOI
Phase field simulation of powder bed-based additive manufacturing
TL;DR: In this paper, a phase field model was developed to simulate powder bed-based additive manufacturing (AM) process, focusing on the effects of two major process parameters, the beam power and scanning speed, on the melt pool size and shape, porosity and grain structure.
Journal ArticleDOI
Jamming during particle spreading in additive manufacturing
Wenguang Nan,Wenguang Nan,Mehrdad Pasha,Tina Bonakdar,Alejandro López,Umair Zafar,S Nadimi,Mojtaba Ghadiri +7 more
TL;DR: In this article, the authors analyzed transient jamming of gas-atomised metal powders during spreading and determined the particle shape as a function of particle size, based on the projected area diameter, for which 90% of particles by number were smaller than this value.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
Cost estimation for rapid manufacturing - laser sintering production for low to medium volumes:
TL;DR: In this article, a cost model for laser sintering is proposed, which leads to graph profiles that are typical for layer-by-layer manufacturing processes, and the evolution of cost models and the indirect cost significance in modern costing representation is shown.
Journal ArticleDOI
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.