|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Advanced Materials for Energy Conversion and Storage 2022
|Joining and Oxidation of Haynes 282 Superalloy Microtubes for High-performance Heat Exchanger Applications
|Narayanan Murali, Xiaochun Li
|On-Site Speaker (Planned)
As heat exchanger technology utilizes more exotic materials, their reliable manufacturing becomes complicated due to the novelty of such materials and the urgent need for their in-depth study, and the availability of this knowledge will undoubtedly aid in future design and manufacturing. To this end, we investigated the joining of drawn Haynes 282 microtubes to wrought Haynes 282 plates using transient liquid-phase (TLP) bonding and evaluated the microstructure and mechanical properties of the assembly. We also studied the oxidation of Haynes 282 microtubes in a carbon dioxide (CO2) environment at an elevated temperature to mimic expected service temperatures. The TLP joint showed coarsening in the microtube’s thickness, while the oxidation study revealed recrystallized grain structures with a bimodal distribution. The results show that microtubes have much potential for superalloy heat exchanger applications.
|Energy Conversion and Storage, High-Temperature Materials,