About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Characterization of the Impact of Hydrogen Concentration on the Plastic Behavior of Pure Nickel Using In-Situ X-Ray Diffraction Microscopy |
Author(s) |
Marco Zambolin, Leonidas Zisis, Sven E. Gustafson, Amlan Das, Zachary D. Harris, Michael D. Sangid |
On-Site Speaker (Planned) |
Marco Zambolin |
Abstract Scope |
The effect of hydrogen on mechanical properties is often a critical factor when determining the operational lifetime of metallic material under aggressive environmental conditions. Nevertheless, numerous questions remained unanswered regarding the relation between hydrogen and the development of plasticity at the microscale. This talk focuses on evaluating the effect of hydrogen on the grain-scale plastic behavior of pure nickel. The grain level elastic properties of three specimens, containing three different hydrogen concentrations up to 5000 atomic ppm, were characterized using in situ X-ray diffraction microscopy techniques. With the reconstructed data, an analysis was performed to determine the variation of the average critical resolved shear stress amongst the aggregate, which provided insights on the plastic slip onset and evolution at the grain level. This information allowed to quantify the role of hydrogen density on the evolution of plasticity to support an understanding of the role of hydrogen in damage accumulation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Copper / Nickel / Cobalt, Mechanical Properties |