Assessing Printability Maps in Additive Manufacturing of Metal Alloys

2019 ◽  
Author(s):  
Luke Johnson ◽  
Mohamad Mahmoudi ◽  
Bing Zhang ◽  
Raiyan Seede ◽  
Janine T. Maier ◽  
...  
Author(s):  
Ganzi Suresh

Additive manufacturing (AM) is also known as 3D printing and classifies various advanced manufacturing processes that are used to manufacture three dimensional parts or components with a digital file in a sequential layer-by-layer. This chapter gives a clear insight into the various AM processes that are popular and under development. AM processes are broadly classified into seven categories based on the type of the technology used such as source of heat (ultraviolet light, laser) and type materials (resigns, polymers, metal and metal alloys) used to fabricate the parts. These AM processes have their own merits and demerits depending upon the end part application. Some of these AM processes require extensive post-processing in order to get the finished part. For this process, a separate machine is required to overcome this hurdle in AM; hybrid manufacturing comes into the picture with building and post-processing the part in the same machine. This chapter also discusses the fourth industrial revolution (I 4.0) from the perspective of additive manufacturing.


2019 ◽  
Vol 176 ◽  
pp. 199-210 ◽  
Author(s):  
Luke Johnson ◽  
Mohamad Mahmoudi ◽  
Bing Zhang ◽  
Raiyan Seede ◽  
Xueqin Huang ◽  
...  

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 483 ◽  
Author(s):  
Tibor Bedo ◽  
Bela Varga ◽  
Daniel Cristea ◽  
Alexandra Nitoi ◽  
Andrea Gatto ◽  
...  

Rapid solidification with high cooling rates of metal alloys determines both the improvement of mechanical properties, due to the finishing of the structure, as well as obtaining metastable structures in the form of supersaturated or amorphous/nano solid solutions, which could potentially confer the material outstanding properties. It is of particular interest to use the energies released during the heating stage for these materials, due to the potentially lower input energy required to melt/fuse these materials. This phenomenon could add to the development and diversification of additive manufacturing technologies. The paper presents results concerning the structural development and phase transformation of metastable structures from Al–Si–Ni-based alloys, obtained by melt spinning and atomization techniques. It was observed that the structural transformations occurring during the heating process, starting from metastable structures, generate significant amounts of energy. This is of practical importance in the use of metallic powders in additive manufacturing technology, due to potentially reduced energy input.


2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Douglas C. Hofmann ◽  
Scott Roberts ◽  
Richard Otis ◽  
Joanna Kolodziejska ◽  
R. Peter Dillon ◽  
...  

2018 ◽  
Vol 20 (5) ◽  
pp. 1700952 ◽  
Author(s):  
Duyao Zhang ◽  
Shoujin Sun ◽  
Dong Qiu ◽  
Mark A. Gibson ◽  
Matthew S. Dargusch ◽  
...  

2014 ◽  
Vol 21 (3) ◽  
pp. 553-560 ◽  
Author(s):  
Stanisław Adamczak ◽  
Jerzy Bochnia ◽  
Bożena Kaczmarska

Abstract The aim of this study was to estimate the measurement uncertainty for a material produced by additive manufacturing. The material investigated was FullCure 720 photocured resin, which was applied to fabricate tensile specimens with a Connex 350 3D printer based on PolyJet technology. The tensile strength of the specimens established through static tensile testing was used to determine the measurement uncertainty. There is a need for extensive research into the performance of model materials obtained via 3D printing as they have not been studied sufficiently like metal alloys or plastics, the most common structural materials. In this analysis, the measurement uncertainty was estimated using a larger number of samples than usual, i.e., thirty instead of typical ten. The results can be very useful to engineers who design models and finished products using this material. The investigations also show how wide the scatter of results is.


Author(s):  
Fredrick M. Mwema ◽  
Esther T. Akinlabi

Additive manufacturing (AM) technology has been extensively embraced due to its capability to produce components at lower cost while achieving complex detail. There has been considerable emphasis on the development of low-cost AM technologies and investigation of production of various materials (metals, polymers, etc.) through AM processes. The most developed techniques for AM of products include stereolithography (SLA), fused deposition modelling (FDM), laser technologies, wire-arc welding techniques, and so forth. In this chapter, a review of the wire-arc welding-based technologies for AM is provided in two-fold perspective: (1) the advancement of the arc welding process as an additive manufacturing technology and (2) the progress in the production of metal/alloys and composites through these technologies. The chapter will provide important insights into the application of arc welding technology in additive manufacturing of metals and composites for advanced applications in the era of Industry 4.0.


Author(s):  
Ajit Behera

Additive manufacturing (AM) is going to cover all the segments of industries from missile industry to biomedical industry. This marked change of technology is due to the distinctive potential of AM to fabricate the parts with intricate designs and reduce fabrication expenditure (free from machining, waste generation, assembly of various parts) with small production runs and short turnaround times. This chapter extensively discussed industrially practiced AM technology. In this chapter, all additive manufacturing materials like metal, alloys, polymer, ceramics, composite, etc. have been given focus for various applications. Additive manufacturing technology is cost effective: no loss of metal and easy to fabricate both larger and intricate shapes. This technology already has taken a primary position in aerospace industries as well as the medical and household industries.


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