About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Variability in Mechanical Properties Related to Porosity in LMD Waspaloy |
Author(s) |
Azdine Nait-Ali, Romain Bordas, Roland Fortunier, Patrick Villechaise, Lucie Rat, Sebastien Rix, Samuel Hemery, Jonathan Cormier |
On-Site Speaker (Planned) |
Azdine Nait-Ali |
Abstract Scope |
Laser Metal Deposition (LMD) is a promising technique for the repair of aero-engine components. Within this context, the influence of porosity on mechanical properties (tension, fatigue, creep) in LMDed Waspaloy has been investigated. Morphology and distribution analyzes were performed using 3D-images obtained by X-ray computed tomography. A complete statistical study using, e.g., covariogram allows us to highlight characteristic parameters such as characteristic distances, distribution probability law of inclusions, all these data being essential to link the mechanical response with LMD processing parameters.
The questions addressed in this presentation are the effect of the spatial distribution, size distribution of pores on the local mechanical fields and resulting static/cyclic mechanical properties. We also want to understand how pores evolve during service life of LMDed repaired components. Simulations are made using a spectral solver (FFT) so that we can perform calculations on large volumes of data directly from the tomography and EBSD data. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Characterization, Additive Manufacturing |