Editorial Board Members’ Collection Series: Additive Manufacturing Technology

Dear Colleagues,

The development of additive manufacturing technologies is becoming increasingly important due to the development of technical devices and the need for new materials and products for machines and mechanisms. A wide range of developing technologies for manufacturing parts, including selective laser or electron beam alloying of powders, direct energy deposition, wire electron beam, electric arc technologies, etc., allow for obtaining parts with different accuracy, productivity, structure, properties, or dimensions. Powder technologies have higher accuracy compared to wire technologies but lower productivity. Wire technologies are characterized by large-size products with high printing speeds and relatively large average grain sizes, especially in the case of electron beam printing. After printing using various methods, a wide range of materials are characterized by internal residual stresses, which influence the need for further heat treatment of the products. Many printing technologies make it possible to form products combining two or more materials with different interfaces between the components. It is also possible to obtain volumetric or surface composites in situ in various printing processes while maintaining the product as a whole. In the process of printing such products, the processes of mutual diffusion of components in the melt bath, formation of solid solutions and intermetallic phases play an important role, which is caused by the corresponding state diagrams, with a difference in the form of their localization in the melt bath and being time limited. This situation requires a deeper understanding of the processes occurring in the melt bath during printing, studying the mechanisms of melting and crystallization of the material and structural phase changes in the course of obtaining products. Analysis of the current state of research in the field of additive technologies for manufacturing products from metals and alloys shows that specific conditions of non-stationary metallurgical processes are formed, which are not typical for traditional technologies and lead to the formation of material structure and properties different from those formed by other production methods. Therefore, it is of great importance to identify the physical nature of the processes implemented in the production of parts using additive methods. Additionally, the great impact on the built parts performances regards the correlation between the specific Additive Manufacturing technology and the corresponding microstructure and mechanical behavior, which can be induced by the different thermal loads specific to the process.  

In this Special Issue, we expect articles presenting the results of studies of the structure organization and forming of mechanical properties in metals and alloys obtained using the methods of various additive technologies. A special interest of the Issue is the problems related to the production of products using methods of high-performance additive manufacturing.

Prof. Dr. Evgeny A. Kolubaev
Dr. Carlo Alberto Biffi
Guest Editors

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• additive manufacturing
• electron beam additive manufacturing
• non-stational local metallurgy
• selective laser melting
• direct energy deposition
• composite materials
• metals and alloys
• microstructure
• mechanical properties
• friction and wear