| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Co-design of 3D Printing, Parts and Microstructure in High-temperature and High-pressure Heat Exchangers |
| Author(s) |
Anthony D. Rollett |
| On-Site Speaker (Planned) |
Anthony D. Rollett |
| Abstract Scope |
We illustrate the importance of co-design with the example of high temperature heat exchangers that employ a pin-and-plate structure and integral headers. 3D printing complex geometries entails mostly empirical adjustments to, e.g., pin geometry and avoidance of sharp changes in cross-section. Concurrently, optimal print conditions must be identified for each printer that minimize porosity. Qualification involves predicting the process window from the physics of laser powder bed fusion and then printing test parts to measure porosity as a function of P, V, H etc. Characterization of single tracks calibrates absorptivity, e.g. The resulting mechanical properties in both Haynes 230 and 282 are comparable to standard product despite the fine grain structure. Microstructure simulation points to strategies for optimization but surrogate models offer potential for substantial speedup. High-speed visualization with synchrotron x-rays provides calibration data of all sorts and we end with select recent results on oscillation and pore formation detection. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |