| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Computation Assisted Materials Development for Improved Corrosion Resistance
|
| Presentation Title |
Development of a Multiscale Corrosion Model for Valve Steels in a Gasoline Engine Environment |
| Author(s) |
Michael R. Tonks, Xueyang Wu, Simon Phillpot, Robert S. Ullberg, Iman Abdallah, Adrien Couet, John Perepezko, Mark Carroll, Wen Jiang |
| On-Site Speaker (Planned) |
Michael R. Tonks |
| Abstract Scope |
As engines are pushed to higher temperatures, valve steels undergo microstructure evolution that sensitizes it to corrosion and can result in premature failure. The goal of this project is to develop the Stainless Steel Alloy Corrosion (SStAC) tool for modeling corrosion of valve steels in an engine environment at temperatures up to 800 C in 1D, 2D or 3D. The tool is being implemented using the open source MOOSE framework, coupling a corrosion model (including the impact of the microstructure and alloy composition) with mechanics and thermal transport. Simulations at the atomic and mesoscales are being used to obtain parameters for the model that include the impact of microstructure and alloy composition. The tool will be validated against new data obtained using laboratory and engine tests. The completed SStAC tool will be used to optimize existing valve steels to improve their corrosion resistance without significantly increasing cost. |