| Full text | |
| Author(s): |
de Sousa, Guilherme Calixto Carneiro
;
de Paula, Andrei
;
Barros, Andre
;
Garcia, Amauri
;
Cheung, Noe
Total Authors: 5
|
| Document type: | Journal article |
| Source: | MATERIALS; v. 18, n. 6, p. 15-pg., 2025-03-16. |
| Abstract | |
Zn-Fe alloys are gaining attention for their use as bioabsorbable implants, and their development requires a deeper understanding of the processing-microstructure-property relationships. This study aimed to analyze the influence of microstructural features on the hardness of a Zn-2 wt.%Fe alloy. To achieve this, a casting was fabricated using directional solidification, and samples that experienced various cooling conditions were extracted from it. The results show that the microstructure of the investigated alloy was composed of a Zn-rich phase (matrix) and FeZn13 intermetallic particles. Four different morphological patterns of the microstructure could be formed, depending on the thermal conditions during solidification. For each of these patterns, a reduction in the spacing between FeZn13 particles, a parameter representing the degree of microstructural refinement, did not lead to a considerable increase in the hardness of the Zn-2wt.%Fe alloy. Hardness was shown to be more dependent on the morphology of the FeZn13 intermetallics and Zn-rich matrix than on the degree of refinement of these microstructural phases. Therefore, the present research provides valuable insights into the development of enhanced Zn-Fe alloys by demonstrating how microstructural features can affect their properties, particularly in terms of hardness and morphologies of the microstructural phases. (AU) | |
| FAPESP's process: | 21/11439-0 - Interrelationships between thermal parameters/solidification microstructures with wear resistance and hydrogen generation of Al-Sn-(Mg;Zn) alloys |
| Grantee: | Noe Cheung |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 23/01422-8 - Hydrogen generation from Al-Mg-Fe-Sn alloys: a recycling strategy with emphasis on microstructure |
| Grantee: | Noe Cheung |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 23/12535-8 - Hydrogen Generation from Al-Mg-Fe-Sn Alloys: A Recycling Strategy with Emphasis on Microstructure |
| Grantee: | Andre dos Santos Barros |
| Support Opportunities: | Scholarships in Brazil - Support Program for Fixating Young Doctors |