Surface Phenomena in Refractory Multi-Principal Element Alloys: Accelerated Development of Resilient Malticuntional Materials.
Abstract
These funds are for Dr. David Poerschke as a DEPSCOR YIP awardee. The major objectives is to understand the phenomena governing the surface reactions that occur when Re-MPEAs are exposed to oxidizing and nitriding environments. To achieve this goal, the program is structured with two technical thrusts. Thrust I focuses on developing oxidization resistant alloys while Thrust II seeks to understand the process of multicomponent nitride formation on Re-MPEAs and the implications for high temperature mechanical properties of nitrided surfaces. Developing new structural materials with increased temperature capability is critical to enable improved durability and increased performance of critical components in Navy propulsion systems. The proposed research will generate new knowledge about the relationships between the phase equilibria and thermochemistry of the base alloys, the surface reactions involved in nitriding processes, and the phenomena governing the in-service oxidation behavior of Re-MPEA systems. This research provides the scientific basis for the design of next-generation thermo-structural alloys. Direct applications include valves and seals for steam systems, gears, shafts, and bearings used for mechanical power transfer, and for combustors, blades, vanes, and seals the hot section of turbine engines for Navy vessels and aircraft. Similarly, these alloys will aid in overcoming the materials limitations on the design of scramjet engines and hypersonic vehicles.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 31, 2020
- Source ID
- N000142012732
Entities
People
- David L. Poerschke
Organizations
- Office of Naval Research
- Regents of the University of Minnesota
- United States Navy