| About this Abstract |
| Meeting |
Superalloys 2024
|
| Symposium
|
Superalloys 2024
|
| Presentation Title |
Non-destructive Volumetric Methods for Detection of Recrystallized (RX) Grains in Single Crystal (SX) Aerospace Components |
| Author(s) |
Iuliana Cernatescu, Chris Pelliccione, Robert Koch, Ryan Breneman, Slade S. Stolz, Venkat Seetharaman, David U. Furrer |
| On-Site Speaker (Planned) |
Iuliana Cernatescu |
| Abstract Scope |
Single-crystal (SX) nickel-based superalloys are used as blade materials for gas turbine aircraft engines due to their superior mechanical and environmental performance. These properties of SX superalloys depend highly upon their crystallographic orientations. The SX superalloy components contain no large angle boundaries, which excludes intergranular oxidation and rupture. However, the industrial manufacturing of SX superalloy blades can still result in the formation of recrystallized (RX) grains which can significantly limit the life of these components. The RX grains can form anywhere within a SX blade but are most frequently observed in areas of high geometrical complexity. These are often areas where high thermal stresses occur during solidification and subsequent cooling processes due to significant mechanical constraint between shell/core materials and airfoil and can occur on the interior walls of hollow configurations. Focused research efforts have been conducted to develop and demonstrate a non-destructive method for volumetric analysis and detection of RX grains in SX components. This method is being further developed and deployed via an integrated computational materials engineering approach to further identify and control critical to quality material and processing parameters to mitigate such features in the most complex production castings. Implementation of this advanced non-destructive evaluation process will be reviewed in terms of targeted locations based on probabilistic material and process modeling. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |