About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
Fatigue Damage Evolution in Duplex Steel Investigated by µLaue Diffraction Using a 3D Energy-dispersive Detector |
Author(s) |
Carolin Leidigkeit, Ullrich Pietsch, Hans-Jürgen Christ |
On-Site Speaker (Planned) |
Carolin Leidigkeit |
Abstract Scope |
The microstructural changes (e.g., dislocation arrangement) inside a metallic material caused by cyclic plastic strain are usually monitored by time-consuming and destructive methods as long as no fatigue crack has been formed. The present work shows an alternative approach using white X-ray radiation and a 3D energy-dispersive detector allowing for non-destructive real structure analysis of specimen by a single-shot experiment.
The method is demonstrated by experiment obtained on a duplex steel (AISI 318LN), which consists of two phases (ferrite and austenite) strongly differing in slip behavior. We present that we are able to address single grains of the polycrystalline material and to investigate different types of dislocation arrangements. The received results are interpreted on the basis of the corresponding investigations on nickel and α-brass showing pure wavy and pure planar dislocation glide, respectively. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Other, Other |