| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Understanding High Entropy Materials via Data Science and Computational Approaches
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| Presentation Title |
Characterization of Thermal Sprayed Ultrahard Coatings for Stamping Die Surfaces from Refractory High Entropy Alloys Designed Using DFT Calculations |
| Author(s) |
Iver E. Anderson, Duane D. Johnson, Prashant Singh, Rameshwari Naorem, Yun Bai, Bill Lenling, Kyle Quillin, Irina Downs, Jim Watts, John Koppes, Nicolas Argibay |
| On-Site Speaker (Planned) |
Iver E. Anderson |
| Abstract Scope |
Better sheet metal stamping processes, especially for aluminum alloy sheet, could achieve greater manufacturing efficiency for lightweight automotive panels. Lighter vehicles from these panels will improve gas mileage for ICE vehicles and extend driving range for electric vehicles. Wear resistant die coatings are being developed from gas atomized powders of ultrahard refractory high-entropy alloys (RHEAs) developed by AMES and SNL-NM using DFT methods. These powder-based thermal spray coatings are intended to extend the life of automotive sheet metal stamping die inserts and my may minimize the need for die lubricants. These initial collaborations with Ford involve wear test specimens that are HVOF (high velocity oxy-fuel) coated with O2/kerosene and O2/H2 torches with at least 100µm layers on flat and grooved steel (carbon-steel, 304SS, D2, or S7) coupons. Results of microstructure and hardness analysis and initial wear and forming tests are reported. Support from USDOE-EERE-AMMTO through Ames Laboratory Contract No. DE-AC02-07CH11358. |