Mechanical Behavior of Additively Manufactured Molybdenum and Fabrication of Microtextured Composites

Patxi Fernandez-Zelaia; Christopher Ledford; Seokpum Kim; Quinn Campbell; Julio Ortega Rojas; Andrés Márquez Rossy; Michael Kirka

doi:10.1007/s11837-022-05379-w

Mechanical Behavior of Additively Manufactured Molybdenum and Fabrication of Microtextured Composites

Patxi Fernandez-Zelaia, Christopher Ledford, Seokpum Kim, Quinn Campbell, Julio Ortega Rojas, Andrés Márquez Rossy, Michael Kirka

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Refractory metals are a class of high-melting-temperature materials suitable for use in extreme environment applications. Interestingly, during additive manufacturing many pure refractory metals exhibit a switch from (001) to (111) build direction fiber preference with increasing surface energy density. We exploit this solidification physics to fabricate material with “mesoscale composite” engineered structures consisting of features with contrasting (001) and (111) build direction microtextures. Separately, elevated temperature tensile testing of EBM fabricated material with a randomized distribution of mixed (001) /(111) -fiber grains is shown to exhibit excellent properties. These results are utilized to build a crystal plasticity model for evaluating the local inelastic response of the composite mesoscale structures. Analysis of printed microstructures and microstructure-scale simulations indicate that both macro-scale and localized material behavior may be tailored. This strategy can be potentially used to synthesize materials with optimized performance for high-temperature applications.

Original language	English
Pages (from-to)	3316-3328
Number of pages	13
Journal	JOM
Volume	74
Issue number	9
DOIs	https://doi.org/10.1007/s11837-022-05379-w
State	Published - Sep 2022

Funding

Research was sponsored by the US Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office, under Contract DE-AC05-00OR22725 with UT-Battelle LLC. This work was performed in part at the Oak Ridge National Laboratory’s Manufacturing Demonstration Facility, an Office of Energy Efficiency and Renewable Energy user facility. All microscopy presented in this work was performed with the support of Carl Zeiss via a cooperative research and development agreement (NFE-19-07705). Research was sponsored by the US Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office, under Contract DE-AC05-00OR22725 with UT-Battelle LLC. This work was performed in part at the Oak Ridge National Laboratory’s Manufacturing Demonstration Facility, an Office of Energy Efficiency and Renewable Energy user facility. All microscopy presented in this work was performed with the support of Carl Zeiss via a cooperative research and development agreement (NFE-19-07705). Notice of Copyright This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
Carl Zeiss	NFE-19-07705
Oak Ridge National Laboratory
U.S. Department of Energy
Advanced Manufacturing Office	DE-AC05-00OR22725
Office of Energy Efficiency and Renewable Energy
UT-Battelle

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abstract = "Refractory metals are a class of high-melting-temperature materials suitable for use in extreme environment applications. Interestingly, during additive manufacturing many pure refractory metals exhibit a switch from (001) to (111) build direction fiber preference with increasing surface energy density. We exploit this solidification physics to fabricate material with “mesoscale composite” engineered structures consisting of features with contrasting (001) and (111) build direction microtextures. Separately, elevated temperature tensile testing of EBM fabricated material with a randomized distribution of mixed (001) /(111) -fiber grains is shown to exhibit excellent properties. These results are utilized to build a crystal plasticity model for evaluating the local inelastic response of the composite mesoscale structures. Analysis of printed microstructures and microstructure-scale simulations indicate that both macro-scale and localized material behavior may be tailored. This strategy can be potentially used to synthesize materials with optimized performance for high-temperature applications.",

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AU - Rossy, Andrés Márquez

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Mechanical Behavior of Additively Manufactured Molybdenum and Fabrication of Microtextured Composites

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