Haynes 214 high temperature heat exchanger assembly with enclosed heat flow channels and internal fin structures was successfully fabricated using our scalable and expeditious additive manufacturing (SEAM) process, a new metal additive manufacturing (AM) technology developed at Michigan State University (MSU). Three dimensional green objects can be fabricated by selectively photopolymerizing Haynes 214 metal suspension on a powder bed system in a layer-by-layer fashion. An innovative strategy to attain a complete binder removal and high density as well as dimensional accuracy were developed and employed to achieve final metal parts with relative density above 99.5% and no geometrical distortion.

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