Experimental Fabrication of Porous Additive Manufactured Material

Conference · Mon Mar 15 04:00:00 EDT 2021

OSTI ID:1788047

Nunez, Luis ^[1]; Van Rooyen, Isabella J ^[1]

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1. Idaho National Laboratory

Nuclear industries can benefit from materials that can perform well mechanically and thermally in high temperature and corrosion environments. Functionally graded materials (FGM) are materials manufactured with complex spatial, structural, and chemical compositions, creating components predesigned with tailored microstructural and mechanical properties. Porosity-graded FGMs are designed to introduce pores into a component’s structure as a mechanism to increase bulk or surface material performance, such as stress accommodation and negative thermal conductivity. Additive manufacturing (AM) techniques such as laser energy net shape (LENS) and wire arc additive manufacturing (WAAM), excel in high energy density, point-to-point metal deposition, and present in combination with other combinatorial approaches, exciting methods to manufacture porous FGM components. This project is also examining plasma jet printing as another means for method evaluations for smaller scale graded components. This study explores AM FGM process parameters and combinatorial fabrication methodologies for stainless steel components functionally graded in porosity levels. Preliminary characterization results are provided to attest the feasibility of the combinational fabrication techniques.

• 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: 1788047
• Report Number(s): INL/CON-20-58911-Rev000
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Additive manufacturing
Functionally Graded Materials
LENS
Plasma jet printing
WAAM