Comparing the deformation mechanism in 316 L stainless steel fabricated by hybrid and additive manufacturing

Rangasayee Kannan; Peeyush Nandwana; Thomas Feldhausen

doi:10.1016/j.matlet.2021.129369

Comparing the deformation mechanism in 316 L stainless steel fabricated by hybrid and additive manufacturing

Rangasayee Kannan, Peeyush Nandwana, Thomas Feldhausen

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

6 Scopus citations

Abstract

This study rationalizes the relatively higher elongation with minimal strength drop of 316L stainless steel (316LSS) manufactured using the hybrid approach in comparison to a fully additive approach followed by machining. It was found that twinning was the dominant deformation mechanism in 316LSS produced by both additive and hybrid approaches. The relatively lower fraction of twins in the as-fabricated state of hybrid approach compared to a fully additive approach resulted in delaying the onset of steady-state strain hardening rate to higher strain levels, thereby resulting in an overall increase in elongation to failure.

Original language	English
Article number	129369
Journal	Materials Letters
Volume	288
DOIs	https://doi.org/10.1016/j.matlet.2021.129369
State	Published - Apr 1 2021

Funding

This work was supported by the US Department of Energy, Office of Energy Efficiency And Renewable Energy, Advanced Manufacturing Office under contract number DE-AC05-00OR22725. The authors acknowledge Mr. Andres Marquez Rossy and Ms. Sarah Graham of Manufacturing Demonstration Facility, Oak Ridge National Laboratory for their help with the microscopy work. Notice of Copyright: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. 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
US Department of Energy
U.S. Department of Energy
Advanced Manufacturing Office	DE-AC05-00OR22725
Office of Energy Efficiency and Renewable Energy

Keywords

Additive Manufacturing
Hybrid manufacturing
Subtractive manufacturing
Twinning

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.matlet.2021.129369

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abstract = "This study rationalizes the relatively higher elongation with minimal strength drop of 316L stainless steel (316LSS) manufactured using the hybrid approach in comparison to a fully additive approach followed by machining. It was found that twinning was the dominant deformation mechanism in 316LSS produced by both additive and hybrid approaches. The relatively lower fraction of twins in the as-fabricated state of hybrid approach compared to a fully additive approach resulted in delaying the onset of steady-state strain hardening rate to higher strain levels, thereby resulting in an overall increase in elongation to failure.",

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AB - This study rationalizes the relatively higher elongation with minimal strength drop of 316L stainless steel (316LSS) manufactured using the hybrid approach in comparison to a fully additive approach followed by machining. It was found that twinning was the dominant deformation mechanism in 316LSS produced by both additive and hybrid approaches. The relatively lower fraction of twins in the as-fabricated state of hybrid approach compared to a fully additive approach resulted in delaying the onset of steady-state strain hardening rate to higher strain levels, thereby resulting in an overall increase in elongation to failure.

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Comparing the deformation mechanism in 316 L stainless steel fabricated by hybrid and additive manufacturing

Abstract

Funding

Keywords

UN SDGs

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