Alternative Fabrication Pathways for Complex Alloys
ID: N242-089Type: BOTH


Alternative Fabrication Pathways for Complex Alloys


Department of DefenseN/A


Type: SBIRPhase: BOTHYear: 2024
  1. 1
    Release Apr 17, 2024 12:00 AM
  2. 2
    Open May 15, 2024 12:00 AM
  3. 3
    Next Submission Due Jun 12, 2024 12:00 AM
  4. 4
    Close Jun 12, 2024 12:00 AM

The Department of Defense (DOD) is seeking proposals for the topic "Alternative Fabrication Pathways for Complex Alloys" as part of their SBIR 24.2 Annual solicitation. The Navy branch is specifically interested in this topic. The objective is to develop a solid state processing pathway for refractory high entropy alloys (RHEAs) that avoids partitioning seen in melting/solidification processes. RHEAs are high-temperature materials with excellent mechanical properties that have the potential to replace nickel-based superalloys. The current methods for processing RHEAs involve melting, which can be challenging due to the high melting points of the constituent metals and elemental segregation during solidification. The SBIR topic aims to develop a method for RHEA production based on the reduction of metal oxides or a mixture of oxides and metallic powders, preferably utilizing non-flammable gas mixtures. The process could result in RHEA metallic powders or RHEA bodies via additive processing of ceramic powders and subsequent reduction heat-treatment. The project will be conducted in three phases: Phase I involves exploring the literature and utilizing computational methods to determine non-additive manufacturing processes that minimize energies and avoid partitioning. Phase II focuses on optimizing processing parameters and developing models/algorithms that link alloy properties to the fabricating process and resulting microstructure. Phase III involves applying the comprehensive models and algorithms to link optimized processing parameters with alloy chemistries that avoid elemental segregation and compositional inhomogeneities. The developed process has the potential to simplify strategies for forming passive films on complex alloys and improve acceptance for producing components for the Navy and private industry. The project duration is not specified, but the solicitation is open until June 12, 2024. For more information and to submit proposals, visit the DOD SBIR website.

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