| Full text | |
| Author(s): |
Pinotti, Vitor E.
;
Andreoli, Angelo F.
;
Gargarella, Piter
Total Authors: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 30, p. 13-pg., 2024-04-18. |
| Abstract | |
Close-coupled gas atomization (CCGA) uses pressurized gas jets to atomize molten metals, producing powders suitable for additive manufacturing (AM). Optimization of processing parameters is crucial to achieve powders with good fluidity and high apparent density for laser powder bed fusion (L-PBF) and increase production yield. This study evaluated the influence of melt feed nozzle diameter, superheating temperature, and atomization pressure on AA2017 aluminum alloy powders' physical properties. Parameters variation poorly affected the median particle diameter (d50), while significantly altering the particle size distribution curves width (IDR = d90-d10). Suitable powders for AM/L-PBF were produced using a specific set of parameters (d0 = 1.5 mm; Delta T= 150 degrees C; PG= 20 Bar), presenting appropriate fluidity and apparent density due to an optimal granulometric distribution and morphological characteristics. Mathematical analysis showed a good correlation between experimental and calculated mean particle size, suggesting an equation to predict percentile d90 based on previous correlations. (AU) | |
| 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: | 20/08145-1 - Gas atomization of 2017 aluminum alloy |
| Grantee: | Vitor Eduardo Pinotti |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 21/12056-7 - Soft magnetic composites produced by additive manufacturing |
| Grantee: | Angelo Fernandes Andreoli |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |