About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2025
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2025
|
| Presentation Title |
Advancing the Understanding of Mechanical Properties of Diffusion-Bonded 316H and Alloy 617 for High-Temperature Applications |
| Author(s) |
Mahmud Hasan Ovi, Intisher Al-Tahmid Omi, Tamim Hossain, Hoon Lee, Silvana Tabares Burgos, James F. Stubbins |
| On-Site Speaker (Planned) |
Mahmud Hasan Ovi |
| Abstract Scope |
The aim of this study is to investigate the mechanical features of diffusion-bonded 316H and Alloy 617 specimens in high temperature environments, with main focus on identifying critical material characteristics/properties of bonded structures under these conditions. The goal of this study is to analyze bond strengths and explain how such bonds fail under mechanical loading, particularly considering the effects of elevated temperatures. To achieve this objective, our methodology integrates a mix of advanced testing approaches. Tensile and creep tests have been conducted over a range of temperatures up to 760°C. Digital Image Correlation (DIC) is used to characterize the material deformation over time. The combined approach offers important insights into the material response to ongoing mechanical loading. Creep-fatigue testing is used to simulate design limits for “damage” accumulation and the associated controlling microstructural mechanisms. Shear punch tests are also used to assess bond integrity and detect potential bond delamination, particularly under high-temperature conditions. Grain growth across bondlines is a determining factor for bond performance and has been analyzed using multiple microstructural analysis techniques. This effort is the basis for an ASME Code Case for elevated temperature applications of compact heat exchanges in advanced nuclear systems. |
| Proceedings Inclusion? |
Undecided |