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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Solid State Diffusion Bonding of Metals and Alloys
Presentation Title Mechanical Characterization of Diffusion Bonded Alloy 800H
Author(s) Heramb P. Mahajan, Tasnim Hassan
On-Site Speaker (Planned) Heramb P. Mahajan
Abstract Scope High efficiency of Compact Heat Exchangers (CHXs) lead to research and development on their fabrication processes and failure mechanisms for determining their applicability to next generation nuclear plants (NGNPs). One of the important fabrication processes of CHXs is the diffusion welding of stacked etched plates. Specified compressive stress and temperatures (beyond recrystallization) are prescribed over a specified duration for diffusion welding, which results in microstructural changes affecting material properties. Knowledge of microstructures and material properties of diffusion welded alloys at high temperatures are limited, but are essential for development of ASME design methodologies and code provisions for application of CHX to NGNPs. This study will evaluate mechanical and microstructural properties of diffusion welded Alloy 800H through a systematic set of tension, creep, fatigue and creep-fatigue tests at various temperatures. Efforts will be made to correlate microstructures to mechanical properties of Alloy 800H.
Proceedings Inclusion? Planned: Supplemental Proceedings volume
Keywords Advanced Processing,


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