Additive Manufacture of Multi-Functional, Large-Scale Components

Conference · Mon Sep 19 04:00:00 EDT 2022

OSTI ID:1892009

Lillo, Thomas M ^[1]; Glazoff, Michael V ^[1]; Larsen, Eric C ^[2]; Clark, Denis ^[3]; Walleser, Jason K ^[1]; Patterson, Tate ^[1]

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1. Idaho National Laboratory
2. retired INL
3. DEClark Welding Engineering, PLLC

The poster summarizes the main results for a LDRD focused on developing a arc-based additive manufacturing (AM) system capable of fabricating large components with a composition gradient otherwise known as functionally graded materials (FGMs). FGMs are capable of addressing local extreme conditions in an optimal and cost-effective manner. The AM system (referred to as multi-Wire Arc Additive Manufacturing or m-WAAM) consisted of modifying a standard automated gas tungsten arc welding system to deliver multiple welding wires to the weld pool at controlled rates to deposit desired alloy compositions at critical locations. Numerous shapes and composition gradients were fabricated with the system and the effect of various deposition parameters on the nature of the composition profile were evaluated. Additionally, heat treatment of the FGM was performed to develop graded microstructures which should enhance dynamic impact performance of inexpensive steels. The project highlights the potential of m-WAAM to efficiently fabricate FGMs. However, this project only explored the science behind the technique and additional development work will be required to develop a fully-functional system that can build more complex components.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1892009
• Report Number(s): INL/CON-22-68926-Rev000
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
functionally-graded materials
wire arc additive manufacturing