Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Preliminary Evaluation of the Shape Memory Alloy Additive Manufacturing Process Using Selective Laser Melting for Application in Scramjet Engines
Submission Author:
Alana Brito , SP
Co-Authors:
Alana Brito, Milton Sergio Fernandes de Lima, Felipe Jean da Costa, Andersan dos Santos Paula
Presenter: Alana Brito
doi://10.26678/ABCM.ENCIT2022.CIT22-0608
Abstract
Since the need for smart materials to be applied to the leading edge of scramjet engines, the present project analyzed the parameters in the NiTi matrix alloy, as they present characteristics of Shape Memory Effect (SME) and Superelasticity (SE). Following studies on additive manufacturing process in NiTi parts, using an unconventional process, the parts were manufactured by 3D printing using CAD software. It is a relatively quick process; therefore, metal parts are structured layer-by-layer using a laser beam to melt the material. This technique has advantages over the conventional technique of manufacturing parts with more complex geometries without the need for molds or prototypes. For the process to occur in a promising way in the market, the source of material deposition is made by Selective Laser Melting (SLM), which has the fusion of the powder layer and deposition of directed energy. In this work, the processes of Powder Bed Fusion (PBF) and Directed Energy Deposition (DED) from Additive Manufacturing (AM) were addressed. When analyzing the processing for the production of parts via SLM, it can be said that the energy density and power of the laser are relevant parameters for obtaining parts with good mechanical properties, low porosity and high density. The mechanical alloying method applied to handle the powder mixture showed better results in its microstructure compared to simple mixing.
Keywords
Additive manufacturing, Selective Laser Melting (SLM), Directed Energy Deposition (DED), Powder Bed Fusion (PBF), Scramjet Engines
