About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Prediction of Good Glass Forming Ability in Amorphous Soft Magnetic Alloys by Thermocalc Simulation and Experimental Validation |
Author(s) |
Yuval Krimer, Natan Aronhime, Paul R Ohodnicki, Michael E McHenry |
On-Site Speaker (Planned) |
Yuval Krimer |
Abstract Scope |
Optimization of glass forming ability (GFA) in metal amorphous nanocomposites (MANCs) has potential to allow improvements in soft magnetic properties and enable hot stamping motor laminates. Thermocalc software was used to simulate liquidus and solidification ranges of (Fe70Ni30)80(B-Si-Nb)20 alloys, while varying glass former concentrations, to identify compositions with good GFA. A region with excellent GFA was identified at 14-18% B and 0-7% Si with the balance Nb, showing minima in liquidus and solidification range. GFA was ranked using differential scanning calorimetry (DSC), using GFA parameters Trg, ΔTxg, and γm. DSC results show that the simulation accurately predicts liquidus temperature, and regions of good GFA correspond to predicted minima in liquidus and solidification range. DSC results show that many alloys display a temperature range between glass transition temperature (Tg) and crystallization temperature (Tx), as high as 41°C, indicating that they may be hot formed and stamped into laminates. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |