High Temperature Plasticity of Microalloyed Aluminum: Influence of Rapid Solidification and Wrought Processing on Precipitation Strengthening and Deformation Mechanisms
Abstract
Funds are provided to support fundamental research into the thermo-kinetic processes involved in, and development of, aluminum-scandium-based, aluminum-rare-earth-based, and other related alloys.Overall MeritsThe technological basis for the alloys under investigation here are from earlier commercial alloys known for high strength, high durability, and corrosion resistance. These foundational alloys have found some applications in Navy ships, and the advanced alloys coming from this effort should reduce costs and improve overall performance to increase alloy-system applicability. Beyond the specific material advances envisioned in this project, the activity will lead to improvements in thermodynamic and kinetic databases which designers can leverage in future alloy development efforts. This is particularly the case for replacement or consumable parts in the field via additive manufacturing. The rapid solidification thrust in this project will support metal additive manufacturing materials development by replicating solidification rates observed in laser-powder methods. Because of this, the Naval Materials Division recommends support for the project as proposed.ONR Mission/RelevanceThe Navy utilizes lightweight, high temperature structural materials throughout their infrastructure. This is particularly the case for naval aircraft and watercraft where reduced weight can enhance speed, agility, and fuel economy. Reducing the cost, and increasing the performance, of aluminum alloys will have a significant impact of future naval systems. The generation of thermo-kinetic data and associated models for high cooling rates -- that is, large supercooling conditions -- will improve our ability to design future alloys for additive manufacturing processes.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2016
- Source ID
- N000141612878
Entities
People
- Paul Sanders
Organizations
- Michigan Technological University
- Office of Naval Research
- United States Navy