About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing for Energy Applications V
|
Presentation Title |
Laser Directed Energy Deposition Additive Manufacturing of Supercritical CO2 Heat Exchangers |
Author(s) |
Christian Sanjurjo-Rodriguez, Amir Shooshtari, Michael P. Marshall, Wei Zhong, Ji-Cheng Zhao |
On-Site Speaker (Planned) |
Christian Sanjurjo-Rodriguez |
Abstract Scope |
Laser directed energy deposition (L-DED) is an important category of metal additive manufacturing (AM) technologies that offers unique advantages such as printing large-scale parts at a fast speed and multi-material capabilities. An L-DED system (TruLaser 3000) with a co-axial conical powder-feeding nozzle was employed in this study to explore its capabilities in building various structures and geometries using nickel-based superalloys. We demonstrated the ability to print 0.3 mm walls at a 45 degree angle both on a flat plate and around a rotating rod. Such capabilities enabled AM of high efficiency heat exchangers (HXs) for supercritical CO2 turbines. Iterative HX design and AM build trials allowed us to leverage the best L-DED AM capabilities to strike a balance between heat transfer efficiency and the HX cost which is predominately dictated by the AM build time. AM microstructure will be shown for superalloys Inconel 625, ABD-900AM, and Mar-M247 (CM247LC). |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Other |