| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Science for Global Development -- Health, Energy, and Environment: An SMD Symposium in Honor of Wole Soboyejo
|
| Presentation Title |
Mechanisms of Rapid Improvement of Mechanical Properties of Cold Sprayed Coatings by Induction Heating |
| Author(s) |
Wei Zhou |
| On-Site Speaker (Planned) |
Wei Zhou |
| Abstract Scope |
Cold spray is an additive manufacturing process in which micron-sized particles are accelerated to supersonic speeds and then sprayed and bonded onto a substrate. It is an emerging technology that is able to deposit a wide variety of materials in the solid state. However, the solid-state bonding usually results in pores in the microstructures. Heat treatment can be used as a post-processing method to reduce the porosity level, but this is a slow process typically taking a few hours. In contrast, we have succeeded in reducing porosity level and improving mechanical properties of various types of cold-sprayed coatings significantly by rapid induction heating for a much shorter period of time. Mechanisms of the improvement are not fully understood, but computational method is used to show that preferential Joule heating occurs around the pores due to current crowding and detouring, resulting in closure of the pores. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Joining |