EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

Towards the development and validation of new sets of functional thermoplastic composites, BioG3D has developed an open-materials prototype 3D printer for composite production with tailored fiber placement, enabled by Continuous Fiber Fabrication (CFF). Redesign and prototyping steps were carried out, implementing the function of coaxial extrusion of polymer filament along twisted Carbon Fiber...

Metal Additive Manufacturing (AM) is set to revolutionise product design and production, but also maintenance and repair of products in service. AM-enabled lightweighting is predicted to save billions of Euros/Dollars as well as to reduce harmful emissions in the transport sector. Reduced manufacturing waste is another potential cost and sustainability gain. However, most mass-production is...

In recent years, the method of additive manufacturing has become more and more important in the production of magnetic materials due to higher demands for miniaturisation and complex- shaped magnet parts. With the method of Laser beam- powder bed fusion (LB-PBF), an in- situ alloying process for the additive manufacturing of the Fe-Cr-Co system has been developed. With this novel method the...

Duplex ferritic-austenitic stainless steels (DSS) receive much attention thanks to their high corrosion resistance and excellent mechanical properties. The phase balance is controlled by the chemical composition and thermal cycles, where the best combination of properties is usually achieved for approximately equal amounts of ferrite and austenite. Additive manufacturing (AM) has provided new...

While the general interest in nano-plasmonics is still unbroken, there is an increasing trend towards the integration in real applications such as direct nano-emitters or high performance sensors [1]. Aside of novel concepts, versatile fabrication methods are in demand, which provide a high degree of flexibility concerning design and manufacturing possibilities. Although traditional methods,...

The recent development of additive manufacturing techniques permits to architecture materials with controlled pores network including both macro and micro pores. The possibility is particularly attractive for designing new orthopaedic implants. Indeed, the pores network allows not only to cleverly reduce the stiffness mismatch between the implant and the surrounding bone tissue but also to...

Laser powder bed fusion (LPBF) is the most widely used additive manufacturing (AM) process to fabricate highly complex structures, holding a great potential for the manufacturing of safety-critical components in aerospace, energy, and automobiles. Energy densities (EDs) were often used to identify regions of the process-property map that give high consolidation in AM of alloys. Various EDs...

Additive manufacturing technologies (AM) have been identified as one of the most promising production technologies of the last decade. They can carry out the transition from mass production to mass customization in the main industrial sectors, as well as is considered that they can exponentially accelerate the transformation from manufacturing to 4.0 industry. There are some AM technologies...

Additive manufacturing (AM) presents unique opportunities to manufacture complex component geometries for high temperature applications. Laser powder bed fusion (LPBF) in particular has gained increasing interest for manufacturing nickel-based superalloys for gas turbine components. It has been established that microstructures obtained after LPBF manufacturing differ significantly from...

Digital printing technologies have attracted significant research interest during the last decade owing to the advancement of printed electronics and the progress on the synthesis of novel materials. In particular, the combination of additive manufacturing processes with conductive inks of 2D materials i.e. graphene inks, has been widely employed in a broad spectrum of applications from touch...

Additive Manufacturing (AM) technologies provide new opportunities to enhance some piece-producing processes in the industry: AM offers the possibility to produce complex-shaped parts that could require multiple manufacturing stages. Moreover, microstructures from Laser Powder Bed Fusion (LPBF) can heavily differ from microstructures usually obtained through traditional processes, showing...

Nowadays, 3D printing is a method of manufacturing widely employed in many areas as, for example, industrial design, construction, education or alimentary sector. Among the possible techniques, Fused Deposition Modeling (FDM) [1] is the Additive Manufacturing (AM) trendiest one, of great interest related to desktop 3D printers and the high capabilities from an industrial point of view.

With...

Hardmetals (also known as cemented carbides) are a class of composite materials employed for the production of cutting and forming tools as well as wear resistant parts. Standard powder metallurgy often suffers limitations in the manufacturing of shapes required by application-oriented design. As a consequence, there is a great deal of interest for the implementation of AM processes to...

Additively manufactured robust complex metallic structures are very promising for field-specific applications in aerospace, automotive, energy, and medical implants. The micro- and nano-structure particularities of the materials for such specific applications are influenced by atomic scale effects. In particular, the very fast cooling rates during the additive manufacturing process affect the...

Additive, direct-write manufacturing via focused electron beam has evolved into a reliable 3D nanoprinting technology in recent years. Focused electron beam induced deposition (FEBID) bases on the highly localized immobilization of surface adsorbed precursor molecules by focused electron beams and its subsequent processes. As the precursor is injected in gaseous states, this technology has low...

Additive manufacturing of 3-dimensional objects on the nanoscale is a very demanding task. Among the few capable techniques, 3D nanoprinting via Focused Electron Beam Induced Deposition (3D-FEBID) is a highly promising candidate due to its additive direct-write capabilities with feature sizes below 100 nm on a regular basis and even below 20 nm under optimized conditions. The working principle...

As the need for reliable 3D-printing at the nanoscale is rapidly increasing, appropriate methods have to be developed to push their capabilities beyond former limitations. In the small pool of capable techniques, Focused Electron Beam Induced Deposition (FEBID) is a promising candidate, as it enables the mask-less, direct-write fabrication of freestanding 3D nano-architectures with a high...

The AISI 316L stainless steel is use for additive manufacturing due to its welding capacity, its relatively high mechanical properties and its high-temperature performance. The DED (Directed Energy Deposition) is a process of additive manufacturing that uses a laser to produce a melt pool, where the metal powder is injected through the nozzle and directly deposited. The additive manufacturing...

Abstract
The relationship between surface tension of molten 304L stainless steel and the welding bed geometry is studied. Welding experiments by Gas Metal Arc Welding (GMAW) in spray arc transfer were performed under different gas mixture composed of argon and oxygen in order to modify the surface tension and the Marangoni convection. The influence of oxygen in the shielding gas was studied...

Inkjet printing provides a powerful approach to fabricating graphene devices, especially for large area, customised formats and co-deposition ability with low cost and good quality. Experimental and theoretical studies of inkjet‐printed graphene structures are presented. Detailed electrical and structural characterization is reported and explained by comparison with transport modeling that...

Two-dimensional material-based field effect transistors have received significant attention due to the materials’ interesting properties. However, graphene based electronic devices are limited by the zero bandgap of single layer graphene. Alternatively, molybdenum disulfide (MoS2), has been considered a promising candidate for electronic device applications, owing to the thickness dependent...

It is evident that 3D printing has advanced rapidly up to nowadays, being actually a technology which has revolutionized the industrial sector (called industrial revolution 4.0). The advances not only concerning to the engineering level, but also involucres many others fields such, for example, health, jewelry or food.
The employed materials in this type of manufacturing include a great...

Ni-Superalloys possess good high temperature mechanical and physical properties especially in the range 550-1000°C. In addition, their resistance to oxidation makes this material as a seamless contender for gas turbine and jet engine components. This material can be also easily employed in additive manufacturing (AM) processes, in particular for Laser Powder Bed Fusion. However, the ideal...

The Directed Energy Deposition (DED), a metal additive manufacturing process, opens up new possibilities for the manufacturing of multi-material structures by controlling the feedstock composition fused by the laser and mixed in the melt pool. Defect-free fabrications and control of the layers' composition however require the complex selection and fine-tuning of a large process parameter set....

Ti-6Al-4V is common material for additive manufacturing. However, parts formed by Selected La-ser Melting are known to be brittle so that a post-process heat treatment is required. One important goal for this additional production step is the degeneration of the martensitic ´-phase that had formed by the extreme conditions during layer-wise production. By using a phase-field based soft-ware...

3D printing has become an attractive manufacturing possibility due to its continuous development over the last years. One common used technology in 3D printing is the digital light processing (DLP) process. It is based on the photopolymerization of photo-curable resins and offers the advantage of high-resolution prints. But due to its complex nature, a robust prediction of the process induced...

Stainless steel 316L has traditionally been the material of choice for maritime industries due its combine strength and corrosion performance. The ability to produce reliable and reproducible components from 316L using additive manufacturing is nowadays crucial to serve the need for customization and on-demand manufacturing. Especially selective laser melting has attracted significant research...

The Wire Arc Additive Manufacturing (WAAM) process with Cold Metal Transfer(CMT) has been developed in the past decade to propose an affordable additive manufacturing method offering large efficiency, important added metal rate as well as simple conventional welding technologies. Nevertheless, the control of WAAM CMT processing has to be improved for dissemination in industries as an...