| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
High-temperature Mechanical Behavior of Additively-manufactured Mini-channel-embedded Inconel 718 Specimens |
| Author(s) |
Scott M. Thompson, Aref Yadollahi, Jasmin Ahmed |
| On-Site Speaker (Planned) |
Scott M. Thompson |
| Abstract Scope |
The development and use of dependable, additively-manufactured metallic parts for high-temperature/pressure applications, such as compact heat exchangers, turbine blades and aerospace structures, continues to receive attention from the energy and aerospace industries. This study investigates the microstructural and mechanical response of Inconel 718 specimens fabricated via the laser-powder bed fusion technique, consisting of novel heat-exchanger-like channels (~1 mm in diameter), during constant and cyclic loading at temperatures as high as 1000 ºC. Microstructural characteristics and failure mechanisms of serviced parts are evaluated using scanning electron microscopy (SEM) within the bulk part and in vicinity of embedded channels. With the aid of computational fluid dynamics (CFD), a set of three channel geometries are selected and then investigated. Each channel was designed with the constraint of surviving high, isostatic pressures and in providing a relatively high Nusselt number for next-generation power cycle coolants such as super-critical carbon dioxide. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |