| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Gamma (FCC)/Gamma-Prime (L12) Co-Based Superalloys III
|
| Presentation Title |
A Rapid and Simplified Approach to Accurately Measure Single Crystal Elastic Constants |
| Author(s) |
Brent R. Goodlet, Ben Bales, Leah Mills, Marie-Agathe Charpagne, Sean P. Murray, Linda Petzold, Tresa M. Pollock |
| On-Site Speaker (Planned) |
Brent R. Goodlet |
| Abstract Scope |
Although the vast majority of structural materials are used almost exclusively in the elastic regime, it can be remarkably difficult to find single crystal elastic constants for even common structural alloys. Elastic property data in the literature often has large errors associated with various experimental and computational difficulties. Ultrasonic methods like resonant ultrasound spectroscopy (RUS) are capable of providing the most accurate measurements of elastic properties of solids. This talk introduces key features of a novel computational procedure—known as an inversion—for fully determining the elastic behavior of a specimen from a single nondestructive measurement of its resonance frequencies. Performing a Bayesian inference, the open-source inversion code (CmdStan-RUS) estimates crystal orientation and elastic constants simultaneously, given only the dimensions of the specimen, its density, and approximately 40 resonance frequencies. Demonstrating the utility of this method, elastic constants of numerous novel Co and CoNi-based single crystal superalloys are presented. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |