| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
Utilizing Reversible Martensitic Transformations for the Mitigation of Thermal Transients |
| Author(s) |
Asher C. Leff, Jacob Wright, Jack Brody, Adam Wilson, Darin Sharar |
| On-Site Speaker (Planned) |
Asher C. Leff |
| Abstract Scope |
Phase change materials (PCMs) are used to mitigate thermal spikes during cyclical electronic device operation by absorbing energy as latent heat of transformation and then releasing it again during cooling when the PCM returns to its low temperature phase. Commercially available PCMs are limited by low volumetric latent heat and low thermal conductivity. They often require encapsulants and design elements such as metal fin structures to enhance conductivity. Metal alloys that exhibit reversible martensitic transformations, such as NiTi, have many advantages that make them superior to the state-of-the-art PCMs currently used including a three order of magnitude higher figure of merit for thermal energy storage (volumetric latent heat times thermal conductivity). In this study the effect of NiTi alloy composition and microstructure on transformation temperature, hysteresis, latent heat and thermal conductivity are explored and the effectiveness of NiTi as a PCM is demonstrated. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |