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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Towards high-temperature applications of aluminium alloys enabled by additive manufacturing
TL;DR: A powder-based additive manufacturing of aluminium alloys is rapidly increasing, and recent breakthroughs in printing of defect-free parts promise substantial movement beyond traditional traditional additive manufacturing.
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The effects of ultrasonic nanocrystal surface modification on the fatigue performance of 3D-printed Ti64
Hao Zhang,Richard Chiang,Haifeng Qin,Zhencheng Ren,Xiaoning Hou,Dong Lin,Gary L. Doll,Vijay K. Vasudevan,Yalin Dong,Chang Ye +9 more
TL;DR: In this article, an ultrasonic nanocrystal surface modification (UNSM) method was introduced for the processing of a 3D-printed Ti-6Al-4V alloy, which resulted in much better surface finish, lower subsurface porosity, and a high magnitude of compressive residual stresses, leading to significant improvement in rotation bending fatigue performance.
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Damage tolerant design of additively manufactured metallic components subjected to cyclic loading: State of the art and challenges.
Uwe Zerbst,Giovanni Bruno,Jean-Yves Buffiere,Thomas Wegener,Thomas Niendorf,Tao Wu,Xiang Zhang,Nikolai Kashaev,Giovanni Meneghetti,Nik Hrabe,Mauro Madia,Tiago Werner,Kai Hilgenberg,Martina Koukolikova,Radek Procházka,Jan Džugan,Benjamin Möller,Stefano Beretta,Alexander Evans,Rainer Wagener,Kai Schnabel +20 more
TL;DR: It is concluded that the homogenization of these fields represents the current challenge for the engineer and the materials scientist.
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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.