Selective Laser Melting, a powder-based additivemanufacturing, is capable of producing parts layer after layer from a 3D CADmodel.
Now, this method attracts growing attention in biomedical applicationsfor applying this technology to make implants and prostheses with complicated ultimateshape. SLM is well-known to have a high-potential in making of fabricationtechnologies for producing complex sections, and as an outcome, many scientificworks are dedicated to its study during the SLM process, a component is formed uponeach layer by surfacing of metallic powder using a laser or a high-energyelectron beam. Titanium alloys (Ti6A14V),nickel alloys, stainless steel and some aluminum alloys are the materials usedin this procedure. In spite of the fact that many positive aspects of the SLMmethod has already been known over the conventional fabrication routes, thereare still many facets of the technology that can be discovered; such as laserparameters, surface circumstances, thickness of the grown layers, thecombination of divergent fabrication technologies, and the repeatability andreproducibility of the growth process. EBM (Electron Beam Melting) is a known powder-bed fusionmethod which is used more nowadays for Additive Manufacturing (AM) of metalcomponents. In which, by guiding it with CAD (Computer-aided Design)information, an electron beam is scanned on a powder bed. The thin layers, WHICHHAVE BEEN SELECTED AND SOLIDIFIED are stacked up and the components arecompleted. The EBM method has a pro when it comes to required componentspossess complex outer configuration and inner structures or it is built fromtitanium alloys, which is famous for being a processing-resistant metal.
Becauseof this superiority, biomedical engineering is an attractive field to conductstudies for discovering specific applications. As such, when EBM method is usedalongside CT (Computer Tomography) technology, artificial implants could becreated with complex figures for optimized human bodies from Ti-6 A1-4V alloy, whichwould deduct the physical harm to the human body. The circumstances of theprocedure would have its effects the primary properties of Ti-6A1-4V alloyproduced by the EBM method (hereafter EBM material).To create appropriate products, therefore, it is noteworthy to aggregateelementary familiarity on their influences. Electron Beam Melting (EBM), which is known to be an additivemanufacturing process, presents great potential for making medical devices andaerospace components through outstanding configuration control via computeraided design input. Electron Beam Melting (EBM) and Selective Laser Melting(SLM) are the known used AM technologies for the metals, and both are capableof producing complex metallic components at high accuracies.
In a comparison toSLM, the higher power and higher scanning velocity of electron beam enable EBMto preheat the powder bed sufficiently to prevent the interior stress or cracksduring the rapid cooling of parts and to generate materials with high shapingrate and superior properties. Furthermore, EBM can prevent defects byoptimizing the process parameters, and can control the microstructure in abroad range than SLM procedures.