Selective laser melting of a 316L stainless steel

• Grant number: 18/16898-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: December 01, 2018
• Status: Discontinued
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Piter Gargarella
• Grantee: Riccardo Augusto Moreira Montuori
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 16/11309-0 - The study, development and application of a hybrid process: Additive Manufacturing (AM) plus High Speed Machining/Grinding (HSM/G), AP.TEM

Abstract

Selective Laser Melting (SLM) is an additive manufacturing process through which a part is built layer by laser. This method is used to fabricate products with complex shapes and customized density as prosthesis, airplane and car structural parts, molds and dies. The first step to fabricate a product by SLM is to optimize process parameters in order to produce parts with high relative density and free of critical structural defects. Every combination of raw material and SLM machine has its own optimum process parameters. This project aims to optimize the process parameters for a 316L stainless steel, which will be used to fabricate turbine blades. Samples with geometry 5x5x10 mm will be fabricated using different laser power, laser scanning speed, scanning strategy and hatching. The density of these samples will be measured by Archimedes' method and those with higher density will be characterized by X-ray diffraction, optical and electron scanning microscopy, differential scanning calorimetry and microhardness.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

RICCARDO AUGUSTO MOREIRA MONTUORI; GUSTAVO FIGUEIRA; THIAGO PACAGNAN CATALDI; NELSON GUEDES DE ALCÂNTARA; CLAUDEMIRO BOLFARINI; REGINALDO TEIXEIRA COELHO; PITER GARGARELLA. Manufatura Aditiva de Aço Inoxidável 316L por Fusão Seletiva a Laser. Soldagem & Inspeção, v. 25, 2020-09-28. (19/01829-5, 18/16898-0, 17/27031-4, 18/06691-9, 16/11309-0)