| About this Abstract |
| Meeting |
2016 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Mechanical properties and Characterization of Microstructural Gradients with Various Gamma Prime Distributions in Low Solvus High Refractory (LSHR) Nickel Base Superalloy |
| Author(s) |
Samuel J Kuhr, John M. Sosa, Hamish Fraser |
| On-Site Speaker (Planned) |
Samuel J Kuhr |
| Abstract Scope |
Hybrid turbine disks are designed to improve resistance against a range of failure modes with spatial variations in microstructure to enhance site-specific properties. An LSHR nickel base superalloy turbine disk was processed with a dual microstructure heat treatment (DMHT) that produces a gradient in grain and gamma prime size from the bore to the rim. In the current research, the transition region was investigated to understand how various gamma prime size and distribution affect its mechanical properties. Specimens were exposed to various solution treatment and aging (STA) conditions and tensile tested at room temperature. HR-SEM was used to characterize the various gamma prime sizes and distribution after each STA sequence. Tensile testing was performed in conjunction with digital image correlation to determine bulk and localized strains. The natures of the deformation substructures were determined by TEM and any correlation between microstructure and mechanical properties has been assessed. |
| Proceedings Inclusion? |
Planned: EPD Congress Volume |