| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Fabrication of Gamma Prime Strengthened Ni-Cr-Al-Ti Microtubes via Gas-phase Deposition and the Kirkendall Effect |
| Author(s) |
Haozhi Zhang, Ashley Paz y Puente |
| On-Site Speaker (Planned) |
Haozhi Zhang |
| Abstract Scope |
Metallic Ni-based superalloy lattice structures have garnered significant interest recently since they provide low density, high surface area and improved heating/cooling efficiency compared to their traditional bulk counterparts. Here Ni-Cr-Al-Ti wires, which fundamentally represent the struts of a lattice structure, have been fabricated using a gas-phase deposition technique called pack cementation. By taking advantage of the short diffusion distances and radial symmetry in lattice structures, this method can also be used to harness the Kirkendall effect to create hollow struts leading to a secondary level of porosity. In this talk, the influence of various alloying additions on the Kirkendall pore formation and evolution will be discussed. The final composition of the hollowed wires can be further optimized by de-alloying via reversing the pack cementation process to get the target composition and the desired gamma prime strengthened microstructure. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |