Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Evaluation of tensile strength anisotropy in preforms of austenitic stainless steel 316L-Si obtained by wire arc additive manufacturing
Submission Author:
Igo Jose , PB
Co-Authors:
Igo Jose , Júlio Feitosa da Silva Neto, Joyce Ingrid Venceslau de Souto, Yuri Dias, Gabriel de Castro Coêlho, Jefferson Segundo de Lima
Presenter: Jefferson Segundo de Lima
doi://10.26678/ABCM.COBEM2023.COB2023-0809
Abstract
TheAdditive Manufacturing (AM) process can produce complex geometries, being ideal for the creation of parts with intricate internal and external structures, and also for the production of objects in a small space of time, in this case, the items are created from the addition of materials through layers, and these materials can be polymer or steel filaments. Among the AM techniques with steel alloys, Wire Arc Additive Manufacturing (WAAM) is a manufacturing technique that uses material addition in layers to create metallic parts from a threedimensional design model.Among the main alloys used in WAAM, austenitic stainless steel alloys can be highlighted, with extensive applicability in the transport, gas and oil industry, due to their properties of mechanical and corrosionresistance.In this context, it is important to carry out a study regarding the parameters that influence the mechanical strength of preforms obtained by WAAM, as well as the type of material used, how the deposition temperature affects the microstructure of the deposited material and how the cooling rate affects the microstructure and mechanical properties of the preform.In this context, this work aims to evaluate the anisotropy of tensile strength in preforms of austenitic stainless steel 316L-Si obtained by WAAM.The anisotropic evaluation was carried out based on tensile tests, through which the bond strength of the depositions was evaluated, defining the relationship between the real deformations in width and thickness.To carry out the tensile test, three samples of the specimen were taken, in the vertical, horizontal directions and at a 45° angle, in relation to the direction of the deposited layers.The main results obtained by evaluating the anisotropy indicate that the specimen removed parallel to the direction of metal deposition (longitudinal direction) presents greater resistance to traction, while the specimens removed transversely to the direction of deposition of the layers present critical points and consequently lower tensile strength.
Keywords
Additive manufacturing, waam, Austenitic stainless steel 316L-Si, Tensile strength, Mechanical Properties, anisotropy
