| Full text | |
| Author(s): |
Batistao, Bruna Fernanda
;
Pinotti, Vitor Eduardo
;
Lima, Moyses Leite de
;
Rodrigues, Ariano De Giovanni
;
Amancio-Filho, Sergio de Traglia
;
Gargarella, Piter
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Powder Technology; v. 443, p. 15-pg., 2024-06-07. |
| Abstract | |
Laser Powder Bed Fusion (L-PBF) is an important route for processing aluminum alloys, nevertheless, the high laser reflectivity and thermal conductivity and lower powder flowability of the aluminum alloys remain a challenge for their processing. Aiming to overcome these issues, AA2017 powders were surface-functionalized using chemical etchings. The powders' physical and rheological characterization revealed a decrease in the laser reflectance and an improvement in the flowability of the surface-functionalized powders, when compared to the gas-atomized powder. The higher amount of keyhole porosity in the as-printed L-PBF samples using the surface-functionalized powders also suggests an improvement in the laser absorption of these powders. However, the formation of a thick oxide layer on the surface-functionalized powders led to oxidation porosity in the asprinted samples. Therefore, the chemical etching should be improved to avoid the formation of a thick oxide layer on the powder surface and oxidation porosity in the as-printed L-PBF samples. (AU) | |
| FAPESP's process: | 20/09544-7 - Surface functionalization of AA2017 powder for additive manufacturing |
| Grantee: | Bruna Fernanda Batistão |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 22/05528-2 - Additive Manufacturing of layered metal composites with soft magnetic properties |
| Grantee: | Vitor Eduardo Pinotti |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 17/27031-4 - Effect of process parameters on the metallurgical characteristics of additive-manufactured alloys |
| Grantee: | Piter Gargarella |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 22/02760-1 - Surface functionalization of the AA2017 aluminum alloy powder for use in additive manufacturing |
| Grantee: | Bruna Fernanda Batistão |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 21/13974-0 - High-pressure studies in glass silicates |
| Grantee: | Ariano De Giovanni Rodrigues |
| Support Opportunities: | Regular Research Grants |