Characterization of Additive Manufacturing for Process Tubing

Paul S. Korinko, John T. Bobbitt, Michael J. Morgan, Marissa Reigel, Fredrick A. List, Sudarsanam Suresh Babu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Additive manufacturing (AM) is being considered as a primary manufacturing process for heat pipes. The Savannah River National Laboratory is researching AM to fabricate a hydrogen isotope separation unit for a thermal cycling absorption process that cycles from cryogenic to moderate temperatures and is a pressure boundary. AM is being explored as a replacement technology to improve heat transfer. Simple test samples with three internal geometries were designed and built from type 316L stainless steel using the powder bed fusion laser process. Nine test article geometries were prepared and subjected to tensile and burst testing and were interrogated using x-ray computed tomography and metallography. The parameters selected for processing the tubes produced a consistent product with acceptable tensile properties and microstructures; however, the process parameters used did not produce full density and minor modifications are needed to achieve full density.

Original languageEnglish
Pages (from-to)1095-1104
Number of pages10
JournalJOM
Volume71
Issue number3
DOIs
StatePublished - Mar 15 2019

Funding

This document and the research were prepared and conducted for the US Department of Energy under Contract Number DE-AC09-08SR22470 with Savannah River Nuclear Solution and with research sponsored by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC.

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