| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
In-situ Tomographic Investigation of Co-base Alloy Solidification Features |
| Author(s) |
Tim Wigger, Mohammed Azeem, Shyamprasad Karagadde, Zhipeng Guo, Robert Atwood, Nghia Vo, Peter Lee |
| On-Site Speaker (Planned) |
Tim Wigger |
| Abstract Scope |
Co-base alloys are emerging as alternatives for critical components in high temperature applications, such as gas turbine blades in aeroengines. Understanding the grain nucleation, growth kinetics and morphology during solidification is crucial for accelerating the development of these novel alloys. In this investigation, we used in situ high-speed synchrotron tomography to investigate the nucleation and growth behaviour of alpha-Co dendrites during solidification. Dendrite nucleation and growth were captured as a function of the cooling rate. The alpha-Co grain nucleation, distribution of grains, growth velocities, tip radii, dendritic arm spacing, crystallographic orientation and porosity during late stages of solidification were captured and quantified. The results used to inform and validate models of the nucleation and solidification kinetics. The results are posited to provide valuable insights and data for the development of Co-base alloys and for improving solidification models for high temperature alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |