High-Strength High-Damping Steels
Abstract
Funds are provided to support the design of strengthening mechanisms for austenitic high-damping steels.Under a Navy-coordinated international collaboration to deliver a new class of steels combining high- strength and high acoustic damping enabling a broad range of applications in naval structures, proposed MIT research combines genomic computational materials design with novel in-situ microstructural characterization for ICME-based acceleration of materials development and qualification. The approach builds on a unified theory of dislocation-based strengthening and the mobility of transformation interfaces to devise microstructural strategies allowing small amplitude motion of transformation partial dislocations for damping while inhibiting large amplitude motion of lattice slip dislocations for strengthening. System- specific quantitative application of mechanistic knowledge is enabled by parametric design grounded in genomic CALPHAD databases of fundamental thermodynamic and kinetic parameters.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 05, 2021
- Source ID
- N000142112400
Entities
People
- Gregory Olson
Organizations
- Massachusetts Institute of Technology
- Office of Naval Research
- United States Navy