| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure and Dynamics of Metallic Glasses
|
| Presentation Title |
Semi-analytical and experimental heat input study of additively manufactured Zr-based bulk metallic glass |
| Author(s) |
Sepide Hadibeik Neishaboori, Emanuel Gingl , Lukas Schretter , Benedikt Bochtler, Jiehua Li , Christoph Gammer, Anton Hohenwarter, Florian Spieckermann, Jürgen Eckert |
| On-Site Speaker (Planned) |
Sepide Hadibeik Neishaboori |
| Abstract Scope |
Laser powder bed fusion (LPBF) of Zr-based bulk metallic glasses is notable for its microstructure control, custom-tailored properties, and versatile applications. Balancing relative density, relaxation, and crystallinity (<5 vol.%) is crucial for 3D printing amorphous components. Previous studies lack an exclusive focus on low crystallinity and atomic-scale effects during LPBF. This study uses systematic experiments and semi-analytical modeling to analyze nano- and macro-scale amorphous structures and mechanical behavior. Differential scanning calorimetry and flexural stress-strain measurements show that lower heat input samples achieve high relaxation and crystallization enthalpies but not optimal mechanical properties. Samples with heat input of ΔH=44 achieve maximum density (up to 99.97%), an amorphous structure, highest flexural strength (up to 2080 MPa), elastic deformation (up to 2.6%), and lowest Young’s modulus (60-70 GPa). Increased heat input values affect underlying layers, validating the complex thermal dynamics and crystalline formation in heat-affected zones. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, |