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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Additive Manufacturing of 316L stainless steel by Selective Laser Melting

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Author(s):
Riccardo Augusto Moreira Montuori [1] ; Gustavo Figueira [2] ; Thiago Pacagnan Cataldi [3] ; Nelson Guedes de Alcântara ; Claudemiro Bolfarini ; Reginaldo Teixeira Coelho [6] ; Piter Gargarella
Total Authors: 7
Affiliation:
[1] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[2] Universidade Federal de São Carlos. Programa de Pós-graduação em Ciência e Engenharia de Materiais - Brasil
[3] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[6] Universidade de São Paulo. Escola de Engenharia de São Carlos - Brasil
Total Affiliations: 7
Document type: Journal article
Source: Soldagem & Inspeção; v. 25, 2020-09-28.
Abstract

Abstract: The present study aimed to determine the optimum parameters for the Selective Laser Melting (SLM) additive manufacturing process of 316L steel in order to obtain high density parts, using equipment manufactured in Brazil. It was also carried out a complete structural characterization of both the raw material used (commercial powder) and the denser parts obtained. The mechanical properties of the parts produced by SLM were also evaluated and compared with parts manufactured by conventional methods. It was observed that the parts’ density increases with increasing energy density applied by the laser until maximum and constant density level is reached. A polynomial model was proposed correlating the energy density used with the final part density. The parts produced by SLM showed high densification (relative density greater than 99,49%) with low porosity homogeneously dispersed in the material. A cellular austenitic microstructure, typical of SLM process, was obtained. The hardness and microstructure of the parts are constant throughout their length and the compression test results showed that parts manufactured by SLM have strength and ductility similar to those manufactured by conventional methods. (AU)

FAPESP's process: 18/06691-9 - 316L steel commercial powder characterization
Grantee:Thiago Pacagnan Cataldi
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 17/27031-4 - Effect of process parameters on the metallurgical characteristics of additive-manufactured alloys
Grantee:Piter Gargarella
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 18/16898-0 - Selective laser melting of a 316L stainless steel
Grantee:Riccardo Augusto Moreira Montuori
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 16/11309-0 - The study, development and application of a hybrid process: Additive Manufacturing (AM) plus High Speed Machining/Grinding (HSM/G)
Grantee:Reginaldo Teixeira Coelho
Support type: Research Projects - Thematic Grants
FAPESP's process: 19/01829-5 - Additive manufacturing through selective laser melting and directed energy deposition of 316L stainless steel: effect of process parameters on mechanical properties
Grantee:Gustavo Figueira
Support type: Scholarships in Brazil - Doctorate