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Effect of process parameters on the metallurgical characteristics of additive-manufactured alloys

Grant number: 17/27031-4
Support type:Research Grants - Young Investigators Grants
Duration: December 01, 2018 - November 30, 2023
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal researcher:Piter Gargarella
Grantee:Piter Gargarella
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Assoc. researchers:Claudemiro Bolfarini ; Claudio Shyinti Kiminami ; Guilherme Yuuki Koga ; Nelson Guedes de Alcântara
Associated grant(s):19/03891-0 - Equipment for additive manufacturing of metals, AP.EMU
Associated scholarship(s):21/10651-5 - Characterization of cold spray coatings of a quasicrystal-forming Al-Fe-Cr-Ti alloy, BP.IC
21/12091-7 - Effect of particle size distribution and drying treatment on the flowability of 2017 aluminum alloy powder, BP.IC
21/11934-0 - Additive manufacturing of Fe77Mo5P9C7.5B1.5 glass former alloy, BP.IC
+ associated scholarships 21/10440-4 - Wear behavior of Al-Fe-Cr-Ti alloy processed by additive manufacturing, BP.IC
20/09544-7 - Surface functionalization of AA2017 powder for additive manufacturing, BP.DR
20/08145-1 - Gas atomization of 2017 aluminum alloy, BP.MS
20/09343-1 - Effect of processing parameters in the additive manufacturing of A2 tool steel, BP.DD
20/04418-3 - Technical support in the atomization and coatings lab of DEMa/UFSCar, BP.TT
20/04366-3 - Technical support in the LASER Materials Processing Lab of DEMa/UFSCar, BP.TT
20/01426-5 - Effect of processing parameters on microstruture and mechanical properties of aluminum alloys obtained by additive manufacturing, BP.DD
20/01452-6 - Effect of processing parameters on the properties of gas atomized powders of A2 tool steel, BP.MS
19/12705-5 - Characterization of 2017 aluminum alloy samples produced by additive manufacturing, BP.IC
19/12712-1 - Characterization of A2 tool steel samples produced by additive manufacturing, BP.IC - associated scholarships

Abstract

The production of metallic parts layer by layer, well-known as Additive Manufacturing (AM), has increased the flexibility and freedom to design metallic products. This area undergone a huge development in the last years thanks to the possibility to produce near-net-shape components, with customized density and complex shapes (sometimes impossible to achieve with traditional manufacturing methods) and to the development of new AM technologies with competitive prices. Products fabricated by AM are already in use in the aeronautic, automotive and biomedical industries. To make use of all the AM potential, it is necessary to develop new alloys specifically for these processes, as was done in the past by the casting and forming industries, to adjust the solidification mode to the thermal characteristics of AM. Several challenges still exist with use of the available metallic alloys as the formation of macro and micro defects during build up, residual stresses generated during process, composition control during melting, formation of texture and hot tears, formation of microstructural heterogeneities, among others. Most of these defects occur because the alloy composition is not adequate for the AM process. The products obtained must satisfy specifications of composition, surface quality, damage tolerance, fatigue, strength and other properties, which are very sensitive to changes in composition and/or microstructure and defects fraction. Nowadays, only a few additive manufacturing alloys as AlSi10Mg, TiAl6V4, CoCr and Inconel 718 can be used in critical applications where high strength and good fatigue and toughness properties are required. Most of the 5500 alloys available today cannot be used because the melting and solidification dynamics promote the formation of long cellular/dendritic grains with cracks periodically distributed in the material. Taking this into consideration, this project aims to investigate the effect of processing parameters in the metallurgical characteristics of parts produced by AM, trying to understand how these parameters affect the solidification behaviour and thermal flow during processing. Two alloys were chosen for this investigation: tool steel AISI A2 and aluminum alloy A2017. Powders will be obtained by gas atomization and it will be used to produce parts by the additive manufacturing processes of Powder Bed Fusion (PBF) e Directed Energy Deposition (DED). It will be investigated the influence of scanning speed, laser power, hatching, scanning strategy and powder characteristics (with and without additions of nucleant particles) in the metallurgical behaviour of the samples obtained. These samples will be characterized by X-ray Diffraction, Differential Scanning Calorimetry, Optical Microscopy, Scanning Electron Microscopy and Transmission Electron Microscopy, Computer X-ray Tomography, chemical analyses, tensile, hardness, fatigue and toughness tests. Simulations of phase formation and solidification by THERMOCALC and numerical modeling of the heat flow will be carried out and compared with the experimental results. The processing parameters used will be correlated with the microstructure, phase formation and properties of the AM samples. (AU)

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Scientific publications (13)
(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)
DE ARAUJO, AYLANNA P. M.; PAULY, SIMON; BATALHA, RODOLFO L.; COURY, FRANCISCO G.; KIMINAMI, CLAUDIO S.; UHLENWINKEL, VOLKER; GARGARELLA, PITER. Additive manufacturing of a quasicrystal-forming Al95Fe2Cr2Ti1 alloy with remarkable high-temperature strength and ductility. ADDITIVE MANUFACTURING, v. 41, . (18/04209-5, 19/03010-3, 17/27031-4, 13/05987-8)
WANG, P.; QI, J. F.; CHEN, Z. W.; LAO, C. S.; HE, T. B.; LU, T. W.; GARGARELLA, P.; SCUDINO, S.. Microstructure and mechanical properties of novel high-entropy alloy particle reinforced aluminum matrix composites fabricated by selective laser melting. Journal of Alloys and Compounds, v. 868, . (17/27031-4)
MARTINS FREITAS, BRENDA JULIET; DE OLIVEIRA, VINICIUS ANTONIO; GARGARELLA, PITER; KOGA, GUILHERME YUUKI; BOLFARINI, CLAUDEMIRO. Microstructural characterization and wear resistance of boride-reinforced steel coatings produced by Selective Laser Melting (SLM). SURFACE & COATINGS TECHNOLOGY, v. 426, . (17/27031-4, 18/23810-1, 19/05885-7)
OLIVEIRA, ADRIEL P.; LIMA, LUIZ H. Q. R.; FELIPE, BIANCA C. A.; BOLFARINI, CLAUDEMIRO; COELHO, REGINALDO T.; GARGARELLA, PITER. Effect of microstructure and defect formation on the bending properties of additive manufactured H13 tool steel. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v. 15, p. 3598-3609, . (18/15659-1, 16/11309-0, 17/27031-4)
BATALHA, RODOLFO LISBOA; PINOTTI, VITOR EDUARDO; ALNOAIMY, OMAR O. S.; BATALHA, WEVERSON CAPUTE; GUSTMANN, TOBIAS; KOSIBA, KONRAD; PAULY, SIMON; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO SHYINTI; GARGARELLA, PITER. icrostructure and properties of TiB2-reinforced Ti-35Nb-7Zr-5Ta processed by laser-powder bed fusio. Journal of Materials Research, . (13/05987-8, 17/27031-4)
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, . (17/27031-4, 16/11309-0, 19/01829-5, 18/16898-0, 18/06691-9)
BATALHA, RODOLFO LISBOA; BATALHA, WEVERSON CAPUTE; DENG, LIANG; GUSTMANN, TOBIAS; PAULY, SIMON; KIMINAMI, CLAUDIO SHYINTI; GARGARELLA, PITER. Processing a biocompatible Ti-35Nb-7Zr-5Ta alloy by selective laser melting. Journal of Materials Research, v. 35, n. 9, p. 1143-1153, . (17/27031-4, 13/05987-8)
BATALHA, RODOLFO LISBOA; PAULY, SIMON; KUHN, UTA; KOSIBA, KONRAD; BOLFARINI, C.; KIMINAMI, CLAUDIO SHYINTI; GARGARELLA, PITER. Oligocrystalline microstructure in an additively manufactured biocompatible Ti-Nb-Zr-Ta alloy. Materials Letters, v. 262, . (17/27031-4, 13/05987-8)
BOMFIM, PAMELA KARINA DOS SANTOS; COURY, FRANCISCO GIL; WANG, PEI; GARGARELLA, PITER. Characterization of AlCoCrFeNi High Entropy Alloy Gas Atomized Powder. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 25, n. 1, . (17/27031-4)
MAZZER, E. M.; DA SILVA, M. R.; GARGARELLA, P.. evisiting Cu-based shape memory alloys: Recent developments and new perspective. Journal of Materials Research, . (17/27031-4, 13/05987-8)
GERA, DENNIS; SANTOS, JONADABE; KIMINAMI, CLAUDIO S.; GARGARELLA, PITER. Comparison of Cu-Al-Ni-Mn-Zr shape memory alloy prepared by selective laser melting and conventional powder metallurgy. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, v. 30, n. 12, p. 3322-3332, . (17/27031-4, 13/05987-8, 16/00583-4)
MAZZER, E. M.; DA SILVA, M. R.; GARGARELLA, P.. evisiting Cu-based shape memory alloys: Recent developments and new perspective. Journal of Materials Research, v. 37, n. 1, SI, p. 162-182, . (13/05987-8, 17/27031-4)
BATALHA, RODOLFO LISBOA; PINOTTI, VITOR EDUARDO; ALNOAIMY, OMAR O. S.; BATALHA, WEVERSON CAPUTE; GUSTMANN, TOBIAS; KOSIBA, KONRAD; PAULY, SIMON; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO SHYINTI; GARGARELLA, PITER. icrostructure and properties of TiB2-reinforced Ti-35Nb-7Zr 5Ta processed by laser-powder bed fusio. Journal of Materials Research, v. 37, n. 1, SI, p. 259-271, . (13/05987-8, 17/27031-4)

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