About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Material Responses Investigated Through Novel In-Situ Experiments and Modeling
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| Presentation Title |
Materials Responses During Laser Additive Manufacturing Revealed by X-Rays |
| Author(s) |
Yunhui Chen, David Collins, Didi Yang, Artjom Bolender, Simon Hunt, Veijo Honkimaki, Alexander Rack, Duyao Zhang, Mark Easton, Peter D Lee, Thomas Niendorf, Philip Withers |
| On-Site Speaker (Planned) |
Yunhui Chen |
| Abstract Scope |
Laser Additive Manufacturing (LAM) is a key technology of the Industry 4.0 revolution. We aim to achieve microstructures and properties control through an in-depth in situ measuring of the unique thermal mechanical material behaviour, which is a combination of thermal expansion, elastic strains, and phase transformations. We developed a new methodology to successfully derive accurate temperature and stress evolution through the use of the coefficient of thermal expansion (CTE) and diffraction elastic constant (DEC) at the same specific condition (chemical composition, microstructure, texture, and heating/cooling rate). Our study has shown that due to the anisotropic grain structure and non-equilibrium grain formation, both DET and CTE are non-constant and non-linear. The decipher of the temperature and materials properties is key milestone in achieving high fidelity quantification of LMAM specific material properties, first time, to provide inputs for modelling and first-hand understanding of the impacts of LMAM to material behaviours. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |