| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
In Situ HRDIC-EBSD Analysis of the Deformation Mechanisms of a Zn-1wt%Mg Alloy Manufactured by Laser Power Bed Fusion |
| Author(s) |
Nafiseh Mollaei, Alireza Rezaei, Mónica Echeverry-Rendón, Federico Sket, Jon Molina-Aldareguía, Javier Llorca |
| On-Site Speaker (Planned) |
Javier Llorca |
| Abstract Scope |
Zn alloys manufactured by laser power bed fusion (LPBF) are considered promising candidates for bioresorbable cardiovascular stents due to their stable degradation rate and excellent biocompatibility. However, strain softening during deformation limits the uniform deformation and leads to potentially unexpected failures that cannot be tolerated in medical devices. In this investigation, fully-dense parallelepipedal samples of a Zn-1wt%Mg alloy were manufactured by means of LPBF. The deformation micromechanisms as a function of strain were analyzed through in situ tensile tests within a scanning electron microscope by means of EBSD and high-resolution digital image correlation (HRDIC). The active slip systems were determined by means of slip trace analysis. Moreover, EBSD maps also provided information about the activation of twinning and recrystallization during deformation. This information was correlated with the features of the tensile stress-strain curve to establish the microstructure-mechanical properties relationships in Zn-Mg alloys manufactured by laser powder bed fusion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |