Exploring Compositionally and Microstructurally Complex Alloys (MPE Alloys) with High Strength/Ductility and Tunable Corrosion Resistance
Abstract
Funds are provided to develop phenomenological method as the basis of reality different from current empirical approach to enable accurate prediction of the compositional spaces of various MPE alloy phases, allowing for phase and microstructural control, employ efficient modeling and simulation of mechanical properties benchmarked with available experimental and computational data to screen prospective MPE alloy compositions for the desired properties, develop current MPE alloys to improve their properties, and iterate and feedback based on corrosion. Specific tasks include: review literature to design model MPE alloys, e.g., Al-Mn-Cr-Fe-Ti, based on corrosion resistance, employ global and spatially resolved surface science methods to obtain information on various length scales regarding the oxides composition and phase identity, conduct exposures in full immersion and simulated atmospheric tests and characterize results via gravimetric methods as well as microscopic methods and establish the baseline corrosion resistance of MPE alloys and connect corrosion properties with the underlying microstructural features and the properties of the oxide , conduct mechanistic diagnostics as resources allow to elucidate origins of good corrosion resistance, and apply findings to guide second generation alloy designs and proposed synthesis.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 26, 2018
- Source ID
- N000141812621
Entities
People
- John R. Scully
Organizations
- Office of Naval Research
- United States Navy
- University of Virginia