Selective Laser Melting is a technology that can be used with various materials including aluminum alloys. The most common and suitable for SLM are AlSi10Mg and AlSi12Mg. Scalmalloy is a innovative material that can be used as high-strength alternative for the mentioned materials. Aluminum alloys are also widely utilize in aircraft production. Selective Laser Melting technology with an appropriate material can be used as substitute of traditional casting or forging technology. Thanks to good mechanical properties and printability of Scalmalloy it can be easily used for this purpose. The proposed paper consists for part which covers fundamental knowledge about AM industry, technology basics and general description of SLM. Technology capabilities with particular emphasis on most part quality influential areas are shown. Second part covers results from mechanical testing. Results from static tests are presented as well as results from quality control reports. According to authors experience the best quality control procedures are shown. Within third section technology substitution for certain parts is presented taking into account part quality, strength, good printability and costs. For some parts non-destructive and destructive tests results were demonstrated.
At a high level of product complexity, which is an aircraft, the selection of "right" parts is an activity that requires high work expenses and appropriate engineering knowledge. Data for this type of assessment should come at least from EDM/PDM class systems and from consultations with development and production departments. The first and the key stage in the process of implementing additive technologies for production is the part selection stage. The starting point for this process is to realize that AM technologies are not always the optimal ones in terms of technology and economy for the production of parts with their participation. They have manufacturing limitations related to the availability of processed materials and devices and are related to the possibility of shape mapping or achieving given performance. Therefore, when considering the parts selection, it should be considered whether: a) parts can be manufactured using current AM systems and materials, b) the parts implemented have economic justification, c) parts meet the criteria of the final product [1]. Finding a common point for these conditions can help us exploit the potential of the new manufacturing method. In this papers a methodology for a part selection process is presented and the different criteria are developed to allow for a qualitative and quantitative assessment. This methodology is based on multicriteria matrix containing a case study from the aviation sector.
Titanium alloys are known for their high-temperature strength, good fracture resistance, low specific gravity, and excellent resistance to corrosion. Ti-6Al-4V is the most commonly used titanium alloy in the aerospace, aircraft, automotive, and biomedical industries. This article discusses various additive manufacturing (AM) technologies for processing titanium and its alloys. These include directed-energy deposition (DED), powder-bed fusion (PBF), and sheet lamination. The discussion covers the effect of AM on the microstructures of the materials deposited, static and mechanical properties, and fatigue strength and fracture toughness of Ti-6Al-4V.
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