Design-to-Component, Closed-Loop ICME Development of Additive Manufacturing Alloys for Naval Applications
Abstract
Design-to-Component, Closed-Loop ICME Development of Additive Manufacturing Alloys for Naval ApplicationsThis program aims to desi""gn, develop and deliver new and/or modified Al- and Ni-alloys optimized for laser-based powder bed fusion (PBF) additive manufacturi""ng (AM) technology, specifically with resistance to the effects of the Naval/maritime environment. The proposed work will accomplish"" this objective with a design-to-component, closed-loop research anchored onICME approach. The proposed work will integrate (1) ICM""E modeling-based alloy design, (2) experimental batch production of powders via gas atomization, (3) parameter-optimization of PBF A""M, and (4) ICME modeling-integrated assessment of properties, along with (5) state-ofthe-art materials/microstructure characterizati""on. Collaborative partnership based on appropriate expertise/facility at University of Central Florida (UCF), University of North Te""xas (UNT) andOerlikon-Metco US (OMUS) will facilitate design-to-component, closed-loop research environment.Target properties for"" AM Al-alloys include mechanical properties and corrosion resistance equivalent to AA2XXX and AA5XXX, respectively. Target propertie""s for PBF AM Ni-alloys include mechanical properties and hot-corrosion resistance equivalent to IN625, however with minimization of" micro-cracking tendencies and crevice corrosion frequently found in AM components.Principal technical approach pervasive throughou"t the proposed program is the integration computation and experiments, i.e., ICME, and science-based, quantity-documented collaborat""ion for Navy-ready technology. At UNT, new and/or modified Al-alloys and Ni-base superalloys (e.g., IN625) will be designed using a"" variety of tools, such as genetic algorithms andCALPHAD platforms, with due consideration for strength, corrosion resistance and p""rintability.Down-selected compositions for Al-alloys and IN625-modified Ni-base superalloys will be gasatomized at UCF, and fed di""rectly into laser-based PBF AM instrument at UCF for production ofspecimens for properties/microstructure assessment, concurrently"" accompanied by optimizationof AM process for specific alloy composition. Evaluation of mechanical and corrosion properties, with r""espect to improved alloy design, will be carried out at UNT. Microstructural analyses with high resolution scanning transmission ele"ctron microscopy and secondary ion mass spectroscopy will be conducted at UCF for optimization of atomized powders and AM processes."Experimental capability at OMUS will contribute to the tasks related to the development IN625-modified Ni-base superalloys, both i"n powders and AM specimen production.We will deliver new and optimized Al-alloys and modified IN625 Ni-base superalloy for PBF AM technology specifically for Naval applications using ICME alloy development integrated with closed-loop experimental investigations" including gas atomization, PBF AM, properties model/measurement, and microstructural characterization. The proposed project will al"soinstitute a new innovation in advanced alloy development and component manufacturing byutilizing the AM technology and science-b"ased collaboration as tools to rapidly produce, assessand characterize materials with new compositions, novel microstructure and en"hanced properties. Findings will contribute significantly to the accelerated discovery and mastery of materials augmented by relevan"t science, ready for Navy requirements and adoptable for civilian applications in energy, automotive, aerospace, aeronautical, optic""al, biomedical and consumersectors.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 05, 2017
- Source ID
- N000141712559
Entities
People
- Yongho Sohn
Organizations
- Office of Naval Research
- United States Navy
- University of Central Florida Board of Trustees