| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Can zinc be strengthened by voids? Micromechanical testing and microstructural insights into electrodeposited zinc coating |
| Author(s) |
Maria Watroba, Killang Pratama, Chunhua Tian, Krzysztof Mackosz, Amit Sharma, Wiktor Bednarczyk, Johann Michler, Jakob Schwiedrzik |
| On-Site Speaker (Planned) |
Maria Watroba |
| Abstract Scope |
Zinc is a promising biodegradable material for biomedical applications, but its low strength and brittleness limit its use in implants. Recent advances have focused on improving its mechanical properties through alloying and plastic deformation to achieve high-strength zinc alloys. Our study explores the alternative strengthening mechanism in zinc through nanovoids. The sample was synthesized as an electrodeposited 30 µm zinc coating, so the use of micromechanical testing was essential to investigate the mechanical properties. Microscopic characterization revealed a columnar grain microstructure with a strong <10-10> texture, the absence of impurities and the presence of intragranular nanovoids in the columns. In situ micropillar compression showed a high yield strength of 1.1 GPa and nanoindentation showed a hardness of 1.8 GPa, twice that of the single crystalline <10-10> counter-part. This suggests strong interaction of dislocations with nanovoids, which act as strong pinning obstacles increasing the required applied stress for dislocation glide. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Other |